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WPO201300032 Calculations 2014-04-25
W are Gov. 1715 17A = /9. Is 35 = 3 .4. 8.35- : • 7.5 'Pv : (.os 1, (q ,20)) : 0,23 Lire r (g.7;)(23)<.V(48.35) = (08.86 Pv = (.05 '('1. •751P c..73 Lr = (g,44) (.7 .))(48.3s)= 216.68 (-for ca(ev _1tWeiv .Trli, a?o% use •a) 14D4 D4. 1,l01036 f, De-J. area 7 R12 7 24.68-0.210 X • ?42 DA = 9g-35 3ive�} S 35 - .Df86 ?ash 13QgC Gi �5 Q✓ e L N 3V B. ova r •.3"I 3 wI / C. '�v = (o.0s + 69 � �) = 0. 23 Live, =(6.71)(o 2:3)C•'*)(4E3 =68.2, Qv = (.oS -r Yi3)) = . ti =(g.T1)( )G�)(4/9. )= i19.9z - 1 qbe Ott avia w p. >io , ksc 4 no 0r wAers rr Devetornen4 Q'eA. Iiq,9 9. NivQ„ - (4)( 1 . x(gavusx43 bv : 2*5,880 G.33ac-- - 35�..4 is e►e✓. fdo 1304p / tt _ 4.35 ra9S °.3' 1 © 6 e0E0 cote. w%� f.ck4re " l m fervec o,c atAts ` /i (era c ci. (cc., ¶ ceoo ►/Ufl i T rmot-Li 4 jl.CU(, `Pe- i WQ/ ( I" r1-01 ) moo( r 4a,.e ©Jet 4g gales (LL \(iqa ) (i& o) = cg o js (yerManen-1- Fool i's, 50 ( slar �'1►� s 351, q - 350 EAvc = s io , _ ,� �8 ) 360.960,) of-s ityte . . gals. • a . c,7-R, )t). jje d p( _ .i2 # 610 15" 0.or.fice yr 24 J e S-h iu and 7e.Jease ovve 2.? q . a c-/4 perm, peot 350.60Ca 4.59 if-�'� yr ele✓ (9,13Sac-i ) = T353. 6 1 y kaki)(36,ov sectrc) 9 4, 52 old, q -4__ .1 T. 4,--1112 2( i,2)(.3,6) T -PAZTL: - &s = No 7b Af{(1111vh ',1"oi T ov M � 01W223 • tee' = /t' o owyet SW&b. 19-way xt-z %a s��� ��� gip gold ? hfr.gI0 #49144yi ang �z n7 p10 u fi swb s• ,it/Jb gz1;* Xzt = s+ GY A$7 / , SZh ; , •gi _ 9praJ pie - s sPyypfG ; y gr i S'ee .moo 5+bo = N`Psd s 3p1 bf1 NL7 gi& s-g•gb : 2291/ 3-as 421ruall;nab lad ft) AJ'OII #0114 (Ulu 01 s' =ND Qv') 6v,•)°Ctif wov Z w S''2t 41° 37"Z S g pa$(►'� vrvr� •� 76y"° L Z seo' OI = %- airo u1'J 'rm. If • "tee 6q • SWVS. _ 14040 saw 3• s m_,• #amti �, = 9 it .jw, soot{ 3r)t2n NO �.�o A off. , d'a.ti Y�Z %xL tS J4J t/cIopOd- A9 Eel'Of t9s)(5H9r0 > (frit Art 1446 Is 2P Pond 2 Subcat Reach Pon Link Routing Diagram for post-county soln Prepared by{enter your company name here), Printed 4/25/2014 HydroCAD®10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC post-county soln Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 2.000 72 1/3 acre lots, 30% imp, HSG B (1S) 0.500 81 1/3 acre lots, 30% imp, HSG C (1S) 8.500 85 1/8 acre lots, 65% imp, HSG B (1S) 2.500 90 1/8 acre lots, 65% imp, HSG C (1S) 22.500 61 >75% Grass cover, Good, HSG B (1S) 6.850 74 >75% Grass cover, Good, HSG C (1S) 4.250 98 Paved roads w/curbs& sewers, HSG B (1S) 1.250 98 Paved roads w/curbs& sewers, HSG C (1S) 48.350 73 TOTAL AREA post-county soin Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 37.250 HSG B 1 S 11.100 HSG C 1 S 0.000 HSG D 0.000 Other 48.350 TOTAL AREA post-county soln Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 2.000 0.500 0.000 0.000 2.500 1/3 acre lots, 30% imp 1S 0.000 8.500 2.500 0.000 0.000 11.000 1/8 acre lots, 65% imp 1S 0.000 22.500 6.850 0.000 0.000 /9-.-35-6- >75% Grass cover, Good 1S 0.000 4.250 1.250 0.000 0.000 5.500 Paved roads w/curbs & sewers 1S 0.000 37.250 11.100 0.000 0.000 48.350 TOTAL AREA 70 23% gess 15- --tc, aAitt -4 4:5- 5,7g 1, 4, s 7 - 7? 4 131 r post-county soln Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD®10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 5 Pipe Listing (all nodes) Line# Node In-Invert Out-Invert Length Slope n Diam/Width Height Inside-Fill Number (feet) (feet) (feet) (ft/ft) (in (inches) (inches) 1 2P 346.00 334.58 75.0 0.1523 0.013 1 30.0 0.0 0.0 post-county soln Type 11 24-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 6 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Runoff Area=48.350 ac 27.71% Impervious Runoff Depth>1.07" Tc=8.0 min CN473 I Runoff=92.11 cfs 4.292 af Pond 2P: Pond 2 Peak Elev=353.89' Storage=9.366 af Inflow=92.11 cfs 4.292 af Primary=1.57 cfs 1.319 af Secondary=0.00 cfs 0.000 af Outflow=1.57 cfs 1.319 af Total Runoff Area = 48.350 ac Runoff Volume=4.292 af Average Runoff Depth = 1.07" 72.29% Pervious = 34.950 ac 27.71% Impervious = 13.400 ac post-county soin Type Il 24-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 1 S: Runoff = 92.11 cfs @ 12.00 hrs, Volume= 4.292 af, Depth> 1.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1 yr Rainfall=3.50" x 2 Area (ac) CN Description 22.500 61 >75% Grass cover, Good, HSG B 6.850 74 >75% Grass cover, Good, HSG C 8.500 85 1/8 acre lots, 65% imp, HSG B 2.500 90 1/8 acre lots, 65% imp, HSG C 4.250 98 Paved roads w/curbs & sewers, HSG B 1.250 98 Paved roads w/curbs & sewers, HSG C 2.000 72 1/3 acre lots, 30% imp, HSG B 0.500 81 1/3 acre lots, 30% imp, HSG C 48.350 73 Weighted Average 34.950 72.29% Pervious Area 13.400 27.71% Impervious Area Tc Length Slope Velocity Capacity Description Olin) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 1S: Hydrograph I I 100� J L 1 L 1 J i L ❑Runoff ' ' , :95� i Inii b1------- �6I Tyyp 3-Il 244hr T'90 y ; i jr � ' 85� -- T- -4 I 1 I 1 \ RaTn all .5O"x2 -- 80" ,r +- - 75 RUno f f-Area=48.¢5O aci-- 70 ' 1 J L I I I I I I I 65.-' --RtNioff�Volume=4.�29Z�of-- y 1 1 I I I I I I I 55� 4 = �- _Rtinof#Dapth 1.01" 1 1 o - ' I I L 1 I JTI7_8.Q min_ T. 45� 1 J L 40�i 1 J L 1 L 1 1 I I 1 I 3 35�' 1 1 I I I I I 1 I I 1 I 30 T i- 4 r ' 25 ----+--- + + , I 1 I 1 1 I I I 20 , ____+____I I- -I. I-____+____-I - + 3 I 1 I I 15 ' L 1 J L 1 1 J 1 I 10''',r 1 J L 1 _L 1 L 5 -, I 1 0 5 8 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (Ileum) post-county soln Type II 24-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 sin 08123 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.07" for 1 yr event Inflow = 92.11 cfs @ 12.00 hrs, Volume= 4.292 af Outflow = 1.57 cfs @ 19.67 hrs, Volume= 1.319 af, Atten= 98%, Lag= 460.3 min Primary = 1.57 cfs @ 19.67 hrs, Volume= 1.319 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 353.89' @ 19.67 hrs Surf.Area= 1.357 ac Storage= 9.366 af (2.976 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 18.0 min ( 826.4 - 808.4 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data(Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000W 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 .60' 9 "Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) ,� s -# Primary OutFlow Max=1.56 cfs @ 19.67 hrs HW=353.89' (Free Discharge) /00 0 t- =Culvert (Passes 1.56 cfs of 76.16 cfs potential flow) �0 2=Orifice/Grate (Orifice Controls 1.26 cfs @ 9.24 fps) 47 3=Orifice/Grate (Orifice Controls 0.30 cfs @ 1.85 fps) ,, 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) T-5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type 1124-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 9 Pond 2P: Pond 2 Hydrograph 1 I I I ,' I I I / Inflow1 1_ y_ _r_ y r J9211ds I_ t 1 y_ r_ _y_ Outflow T r I r - Primary ' -1 T 1 r -InflowrArea=481354 ac- ■Secondary1003 I 1 ' r 95ti _ I I I : Peak-Itlev=353.89'-- 90-' I 1 J L J 1 1 J I 85� 1 1L -Atorage=9.466-a0-. 80t- J 1 J L L J 1 I J L J 75i-. ,' ,' / J -I J L J 1 J L / ' ' ' I I I I 65� , g. 80�' _ r T r r r 1 r -1 IL 55"/' 1 I I -1 T i r , r 1 , r -1 3 50 .-' 1 1 1 G _ I 1- 1 r l T 1 l !' I I I U. 45J - 1 I 1 1 1 I 40- , 1 1 1 __- I I 1 1 35- I 30: L J I 1 J _L J 1 1 253' L J 1 204 ,,',' 15 /' ,' s� -r‘ ... ,. ','"K .161fir 000a. v /AV Y,9- //////O ////% 0 ' 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soin Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 sin 08123 ©2013 HydroCAD Software Solutions LLC Page 10 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Runoff Area=48.350 ac 27.71% Impervious Runoff Depth>1.13" Tc=8.0 min CN=73 Runoff=97.64 cfs 4.544 af Pond 2P: Pond 2 Peak Elev=354.00' Storage=9.511 af Inflow=97.64 cfs 4.544 af Primary=1.80 cfs 1.435 af Secondary=0.00 cfs 0.000 af Outflow=1.80 cfs 1.435 af Total Runoff Area= 48.350 ac Runoff Volume= 4.544 af Average Runoff Depth = 1.13" 72.29% Pervious= 34.950 ac 27.71% Impervious = 13.400 ac post-county soln Type 1124-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment 1S: Runoff = 97.64 cfs @ 12.00 hrs, Volume= 4.544 af, Depth> 1.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1.5 Rainfall=3.60" Area (ac) CN Description 22.500 61 >75% Grass cover, Good, HSG B 6.850 74 >75% Grass cover, Good, HSG C 8.500 85 1/8 acre lots, 65% imp, HSG B 2.500 90 1/8 acre lots, 65% imp, HSG C 4.250 98 Paved roads w/curbs & sewers, HSG B 1.250 98 Paved roads w/curbs & sewers, HSG C 2.000 72 1/3 acre lots, 30% imp, HSG B 0.500 81 1/3 acre lots, 30% imp, HSG C 48.350 73 Weighted Average 34.950 72.29% Pervious Area 13.400 27.71% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 1S: Hydrograph I I I I I I I ■Runoff 105: , I I 1 1 I I 100i- l9784 cfl( I i /� I - 95�- ' T 1 T i- T , T T ype-IF 24yh r-- I I 90 , 1,5_Ra faII i3.60..-- 80I- ----r----, r ;- 1 wnoff-Area=48.5O ac 75� , -* t- + , 70z ; , r----.-- I unonfohume=4.544taf-- , I I v - , I I I Runoff 60 Dpth '1:13" 3 55 ,_ L ,- T. 50 i J 1 7 T c=8,O niin-- 45 , a L L ,- --I I 4o�, 1 J 1- L 1 J CN73-- 1 I 354-�// 1 J L. L 1 J L L I I I 1 I 30 1 J L_. L 1 J L 1 I 25y' : I I I 201''',r L I I y I I I 15 1 I I I 1 I I 104 /' , I -i 4 I I 1 I �, 5i- I 0 �, �: . 1 . �: . . . �. .. . (. . . . (. . . . �. . 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soln Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 12 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.13" for 1.5 event Inflow = 97.64 cfs @ 12.00 hrs, Volume= 4.544 af Outflow = 1.80 cfs @ 19.08 hrs, Volume= 1.435 af, Atten= 98%, Lag= 424.8 min Primary = 1.80 cfs @ 19.08 hrs, Volume= 1.435 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 354.00' @ 19.08 hrs Surf.Area= 1.362 ac Storage= 9.511 af (3.120 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 35.3 min ( 842.5 - 807.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2 21 350.00 1.157 1.554 4.475 14,5- ' 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00' /334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 353.60' 9.2"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=1.80 cfs @ 19.08 hrs HW=354.00' (Free Discharge) t-l=Culvert (Passes 1.80 cfs of 76.76 cfs potential flow) -2=Orifice/Grate (Orifice Controls 1.28 cfs @ 9.38 fps) -3=Orifice/Grate (Orifice Controls 0.53 cfs @ 2.16 fps) -4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 13 Pond 2P: Pond 2 Hydrograph I I 1 I I 1 1 I I I __ _1 1 _ L L J L 1 . Inflow ,' _ 1 I J L L J 1 I • ,/ ,/ 1 1 I 07 " ■Outflow / / ----ti----t----I----'+----r--- - �1-�-.,,- A/� _4Q ��l,�C-A/�--1----' Prima T t11� QW*!'t�� ��7t/�0-- ■Secondary /' /',',,' I I I 1 I I 1 105 ,' , I 7 I I I I 1 I 100_ ' J 1 1 J L L___J_��k-lev 3 -OO _. 95.S� ',/ ,-----l----4 I J L L J 1 J_ 90 ,' /' '',---_ti____y____I____t-_-_r____I__ i ito/ag 9. 1-1 iaf_. 85' I 1 r I rI I 1 1 r I 1 r I I I 80� / 1 I I I I I I I 75y' 1 I I J L J 1 J L I I I : I I I I I I / /•,/ 1 1 I 1 1 1 I I 1 I 1 I I 85� /' / , -,- -t 1 r r- -1 r I i a - . - 1 1 I 1 1 I I I •I I 1 1 !V' 80 -1----T 1 1 r 1 1 1 r I 1 r "1 1 1 I I I I I I 3 55 O 50 1 I; I L I JI I 1 1 I J I L JI . I LL 45 ' 1 I J L I L J 1 1 J L J / / I I I I I I I I 1 I I I 1 40 I r 7 r r r 1 r I 1 I I 1 1 35 T 1 I r 1 r 1 r I 30 AL_ [ J 25 J J L J J. I J L 20 , ��i�fkkiter"/��r.," �J"7." 000d. ;or Apr 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soin Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 14 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Runoff Area=48.350 ac 27.71% Impervious Runoff Depth>1.19" Tc=8.0 min CN=73 Runoff=103.23 cfs 4.801 af Pond 2P: Pond 2 Peak Elev=354.10' Storage=9.642 af Inflow=103.23 cfs 4.801 af Primary=2.06 cfs 1.577 af Secondary=0.00 cfs 0.000 af Outflow=2.06 cfs 1.577 af Total Runoff Area = 48.350 ac Runoff Volume=4.801 af Average Runoff Depth = 1.19" 72.29% Pervious = 34.950 ac 27.71% Impervious = 13.400 ac post-county soin Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 15 Summary for Subcatchment 1S: Runoff = 103.23 cfs @ 12.00 hrs, Volume= 4.801 af, Depth> 1.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2 yr Rainfall=3.70" Area (ac) CN Description 22.500 61 >75% Grass cover, Good, HSG B 6.850 74 >75% Grass cover, Good, HSG C 8.500 85 1/8 acre lots, 65% imp, HSG B 2.500 90 1/8 acre lots, 65% imp, HSG C 4.250 98 Paved roads w/curbs & sewers, HSG B 1.250 98 Paved roads w/curbs & sewers, HSG C 2.000 72 1/3 acre lots, 30% imp, HSG B 0.500 81 1/3 acre lots, 30% imp, HSG C 48.350 73 Weighted Average 34.950 72.29% Pervious Area 13.400 27.71% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 1 S: Hydrograph I I I 1 1 I 1 1 1 1 115_ , ■Runoff r r � I I I I I 1103230$ rI I I I I 1 105i- - r r r r Ty#pe-�1244hr - r 2 yr Ra tifal[ -3:70"-- 85 Ru-nof Atea-48. 50 ac 75- 70-V J 1 -Runoff Volu me=_4.801_of- ' _ I I I I 1 65� 1 J L L 60J, Runoff Depth'1.19 55 L _L.____ LL 50= ---- - - ;- Tic=8:0: � 1 I I I I I I I 1 1 - I 1 1 I I I I I I I 7 I I I 1 I I I I I I I I I 1 I 4,1 t r r r r I 1 I I 20' t 4 I r r 4 1 r r I T I I I I r r r T r r 10= I1 1 r I I 1 r 5 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soln Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 16 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.19" for 2 yr event Inflow = 103.23 cfs @ 12.00 hrs, Volume= 4.801 af Outflow = 2.06 cfs @ 18.47 hrs, Volume= 1.577 af, Atten= 98%, Lag= 388.1 min Primary = 2.06 cfs @ 18.47 hrs, Volume= 1.577 af Secondary= 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 354.10' @ 18.47 hrs Surf.Area= 1.367 ac Storage= 9.642 af (3.252 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 51.0 min ( 857.0 - 806.0 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 353.60' 9.2"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=2.06 cfs @ 18.47 hrs HW=354.10' (Free Discharge) t-j=Culvert (Passes 2.06 cfs of 77.31 cfs potential flow) -2=Orifice/Grate (Orifice Controls 1.29 cfs @ 9.50 fps) -3=Orifice/Grate (Orifice Controls 0.76 cfs @ 2.40 fps) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 17 Pond 2P: Pond 2 Hydrograph - I I I I I I I I I - 1 T I --1 r 1 1 I 1 T I 1 r ,' I ' 1 J L I I J 1 I J L J Inflow LJ r ,r I I I 10323Crf I I I Outflow + + i- -I 115_ T T r 1 flowArea=48:35Q a�- ■Prima ■Secondary ' '110�,, ,' , I I 105; , Peak Vey354.10 - 100; 1 r 1 , /��yr���/��/rpa�-�^4 /y� 95;/ J J. J L I J -1-- T g-J 9 42 of 90i- I I I 1 I I I 80i'/ I T I l r 1 -1T 1 r I 1 I J I I I I 1 J I 75�/ I I 1 I I 70� p 6 -' 1 4T I 1 r I r l r 1 r 1 T 5j V J I I I 1 1 J , I 1 1 I II 1 T I r I 1 __ r I 50J I I I I I I _ I 45 1 1 I 1 1 1 I 1 , , , ,' 1 1 I J L ___I_- --J 1 J _L___J____ 40 1 35f' ' --I- -T -I- 1 -r- --1- * I I I I I I I I i I I I I 1 30, 1 T I 1 r 1 r i 1 1 I J 1 I L 1 1 1 25 I "tri 10_ -/mod/// .F.,./iI .1.efr le:e�� %:%// .//.&i1//////////////% r s coo c rs ./.,/'f.%�.//./I���� .�� /���i.... .. �'--� WO 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) 7 post-county soln Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 18 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Runoff Area=48.350 ac 27.71% Impervious Runoff Depth>2.54" Tc=8.0 min CN=73 Runoff=218.44 cfs 10.223 af Pond 2P: Pond 2 Peak Elev=355.99' Storage=12.321 af Inflow=218.44 cfs 10.223 af Primary=12.70 cfs 4.869 af Secondary=0.00 cfs 0.000 af Outflow=12.70 cfs 4.869 af Total Runoff Area=48.350 ac Runoff Volume= 10.223 af Average Runoff Depth = 2.54" 72.29% Pervious= 34.950 ac 27.71% Impervious= 13.400 ac post-county soln Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 19 Summary for Subcatchment 1S: Runoff = 218.44 cfs @ 12.00 hrs, Volume= 10.223 af, Depth> 2.5411 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10 yr Rainfall=5.60" Area (ac) CN Description 22.500 61 >75% Grass cover, Good, HSG B 6.850 74 >75% Grass cover, Good, HSG C 8.500 85 1/8 acre lots, 65% imp, HSG B 2.500 90 1/8 acre lots, 65% imp, HSG C 4.250 98 Paved roads w/curbs & sewers, HSG B 1.250 98 Paved roads w/curbs & sewers, HSG C 2.000 72 1/3 acre lots, 30% imp, HSG B 0.500 81 1/3 acre lots, 30% imp, HSG C 48.350 73 Weighted Average 34.950 72.29% Pervious Area 13.400 27.71% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 1S: Hydrograph I 240' 1 I : 1 I 0 Runoff 230ir 1 J I L L 1 J I L L I 1 1 1 121844cf I I �jI I ,/I 220 -; ----1 r_yp@ll-24ihr 200 -, T ; ; r IQ_i r_RC1aililfa11 5. 0" 180 / 1 J 1 L 1 170� kunofFArea=T48:350 lac-- L 1 160� ; ' =-RuriOff Volume;=111223raf 150: + 1 r- + M� w 140% - T 1 1 r ROno D pT 2 4"-4 130 ' i i i r T µ L/(F+ 120-_'/ I I I I I I I_ 3 I 1 I I I 1 I 1 I Li, 110='/ 1 J I I L 1 _ L 1 J c=8.Omin-_ 1 I I 1 I 100? ,_ 1 J I I IL 11 L }I 1 90y,, _ _T_ i r T r T -1 C N:4 3 -- BQy 1- T _ 1r T l Ir i 70y 1 1 I 60i- 1 J L 1 I I L 1 I I- I I 1 I I I I 1 50��- I -II I 1 L 1 -I, J L L - I I 1 1 I 1 1 , 1 - I I I I I 1 1 I 1 1 I 30_' -+ -1 r + r + r 1 20� T -1 1 1 r 1 r r 10-' o 5 8 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soin Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 20 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 2.54" for 10 yr event Inflow = 218.44 cfs @ 12.00 hrs, Volume= 10.223 af Outflow = 12.70 cfs @ 13.10 hrs, Volume= 4.869 af, Atten= 94%, Lag= 66.2 min Primary = 12.70 cfs @ 13.10 hrs, Volume= 4.869 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 355.99' @ 13.10 hrs Surf.Area= 1.466 ac Storage= 12.321 af (5.931 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 94.9 min ( 885.2 - 790.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00'/334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 353.60' 9.2"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=12.66 cfs @ 13.10 hrs HW=355.99' (Free Discharge) L tCulvert (Passes 12.66 cfs of 87.33 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.58 cfs @ 11.58 fps) 3=Orifice/Grate (Orifice Controls 3.15 cfs @ 6.82 fps) 4=Orifice/Grate (Weir Controls 7.94 cfs @ 1.75 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) LS=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 21 Pond 2P: Pond 2 Hydrograph , I 1 , , Inflow ,r T r 21614 de T 1 - -�---- �'Outflow y____t______ lQ�/tArea=�F0.35O aG- •■Primary 240=' - econdary 220�' 1 L ----`--- Peal-EIev=355.99'--. 200 J L L_ _J_.Strae="f 2. 21 of 180 180 -' T 1 r 1 T 1 r ,g 140 '' i ' ► J 1 _, L L J t -I L 120-i-' O I , i` 100_- � 807- T 60-? , 2-' �V�.'JJ r/:J.rd�.r.>vrJys�J/ , 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soln Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 22 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Runoff Area=48.350 ac 27.71% Impervious Runoff Depth>5.39" Tc=8.0 min CN=73 Runoff=449.80 cfs 21.722 af Pond 2P: Pond 2 Peak Elev=357.98' Storage=15.345 af Inflow=449.80 cfs 21.722 af Primary=96.78 cfs 12.800 af Secondary=151.94 cfs 3.287 af Outflow=248.72 cfs 16.087 af Total Runoff Area= 48.350 ac Runoff Volume= 21.722 af Average Runoff Depth = 5.39" 72.29% Pervious = 34.950 ac 27.71% Impervious = 13.400 ac post-county soin Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD© 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 1S: Runoff = 449.80 cfs @ 11.99 hrs, Volume= 21.722 af, Depth> 5.39" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 yr Rainfall=9.10" Area (ac) CN Description 22.500 61 >75% Grass cover, Good, HSG B 6.850 74 >75% Grass cover, Good, HSG C 8.500 85 1/8 acre lots, 65% imp, HSG B 2.500 90 1/8 acre lots, 65% imp, HSG C 4.250 98 Paved roads w/curbs & sewers, HSG B 1.250 98 Paved roads w/curbs & sewers, HSG C 2.000 72 1/3 acre lots, 30% imp, HSG B 0.500 81 1/3 acre lots, 30% imp, HSG C 48.350 73 Weighted Average 34.950 72.29% Pervious Area 13.400 27.71% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 1 S: Hydrograph 1 J I L 500- I I �-----r ■Runoff 480- T 1 r I r 1 1 / I I I 3 449.8045 I I I I I I 440�' 1 L 1 TYPe1I-24yhr- 40O?; T r 100-yr -. 380, I I I I I u //�� 360� 1 J I I I L 1 ' Runoff-Area�48-35O ac- I I I I I 340 , 1 J 1- " 320_ I I I I 1 Runoff /-ol trmec21-122;of-- _ 300� - T I I r T N 28044 (7j I J_ f_ 1 p� _/� _-( I I I I I 1 ■rr KS 2 260�/ 1 J 1 I L 1 I L © L -- � I I I I I 1 I I I I I I 0 240� , _}____� �____ __ ,____ ____ I I I I I I I I I C �Omlrr-- LL 220�/ r i I I r i I r i 1 r 1 1 I I I I I I I I I e. I 200 ' I 1 I I I 1 1 I I I C N=73 180�' 1 1 I I I I 1 I I I I I I I I I I I 1 1 I I I I I 1603,, ____ I 1 4____;_ I 4____1 ___1 i i 1 _ _ - I 1 I I I I I I r----Y-----� 1 r----+ 1 I I I I I I I I I I I I 120? T 1 I 1 r T I r T I I r 100s, I I I I 1 I I I I I I I I I I I I I I I 1 80&/i L JI I L 1 I L 1I J I L L I I I 1 I I I I I I I 1 40 T 1 I I r -_1 - T 1 I r r 20 ' 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soln Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 24 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 5.39" for 100 yr event Inflow = 449.80 cfs @ 11.99 hrs, Volume= 21.722 af Outflow = 248.72 cfs @ 12.10 hrs, Volume= 16.087 af, Atten= 45%, Lag= 6.3 min Primary = 96.78 cfs @ 12.10 hrs, Volume= 12.800 af Secondary = 151.94 cfs @ 12.10 hrs, Volume= 3.287 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 357.98' @ 12.10 hrs Surf.Area= 1.569 ac Storage= 15.345 af (8.954 af above start) Plug-Flow detention time= 191.1 min calculated for 9.664 af(44% of inflow) Center-of-Mass det. time= 42.2 min ( 815.8 - 773.7 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 353.60' 9.2"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=96.74 cfs @ 12.10 hrs HW=357.97' (Free Discharge) L =Culvert (Inlet Controls 96.74 cfs @ 19.71 fps) 2=Orifice/Grate (Passes < 1.83 cfs potential flow) 3=Orifice/Grate (Passes < 4.44 cfs potential flow) 4=Orifice/Grate (Passes < 142.52 cfs potential flow) Secondary OutFlow Max=150.78 cfs @ 12.10 hrs HW=357.97' (Free Discharge) S=Sharp-Crested Vee/Trap Weir (Weir Controls 150.78 cfs @ 3.84 fps) post-county soln Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 25 Pond 2P: Pond 2 Hydrograph I I I I I I I I I I I ■Inflow ----1----r--------' •Outflow Y______ ____ ow Area=48 350 ac 500 Inflow •Primary ■Secondary - - Peak Elev=357.98' aso 400—' Stbrage=15. 345 of r T r I � 350-- r 248.72 cfs 300-- w 250� o - / Lt. 200— - - 151 94 c1s 150— a____ ;"( El 100_ ini.�/ 50; ' 1�i�iil���� g/'1/�aa%r/�i MA ���»11111111 ///��///////////////� 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Is 2P \\*\\\ Pond 2 7r1 sot)) Link Routing Diagram for post Prepared by{enter your company name here), Printed 4/24/2014 HydroCAD®10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC post-county soln Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 1 Pipe Listing (selected nodes) Line# Node In-Invert Out-Invert Length Slope n Diam/Width Height Inside-Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 2P 346.00 334.58 75.0 0.1523 0.013 30.0 0.0 0.0 post-county soin Type II 24-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 2 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.07" for 1 yr event Inflow = 92.11 cfs @ 12.00 hrs, Volume= 4.292 af Outflow = 1.05 cfs @ 20.00 hrs, Volume= 0.653 af, Atten= 99%, Lag= 479.9 min Primary = 1.05 cfs © 20.00 hrs, Volume= 0.653 af Secondary= 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 354.38' @ 20.00 hrs Surf.Area= 1.382 ac Storage= 10.029 af (3.638 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 160.2 min ( 968.6 - 808.4 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00' / 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 351.60' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 9.6"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=1.05 cfs @ 20.00 hrs HW=354.38' (Free Discharge) t =Culvert (Passes 1.05 cfs of 78.88 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.05 cfs @ 7.72 fps) 3=Orifice/Grate ( Controls 0.00 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) 5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type 1124-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 3 Pond 2P: Pond 2 Hydrograph I 1- -----+ ;- ■Inflow T ; r .JY2.11 c!s I s' r _- -,C ' 'Outflow T ; - �flowrArea=48:350 aG- ❑Primary 100 " I 1 ❑Secondary I 1 1 95�' ; ; ; Peak-EIev=354r38'-- 90 ' 1 J L L _165� ,' J J L St ra a=J't0.Q29-at 60�'' J J 1-tL J I I I 75y J I. J L J L J J 70? 654"' ,' ,' 60y, I 1 I ii _ r 1 r I 1 r 1 r II 55=' 1 7 T 1 r I r 1 r 1 r 7 504' I I I G , T 1 r 1 1 r 1 r I I T. 45J - I 1 1 I I 1 1 40y' 1 1 1 I 1 I I 1 1 35~' ---- - 1 1 1 ___-_ 1 1 I 304. 1 J L J I- J Z5� I L J -I 204" 1.11111ar 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post-county soln Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCADO 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 4 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.13" for 1.5 event Inflow = 97.64 cfs @ 12.00 hrs, Volume= 4.544 af Outflow = 1.11 cfs @ 20.00 hrs, Volume= 0.676 af, Atten= 99%, Lag= 480.0 min Primary = 1.11 cfs @ 20.00 hrs, Volume= 0.676 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 354.54' @ 20.00 hrs Surf.Area= 1.391 ac Storage= 10.258 af (3.867 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 161.4 min ( 968.6 - 807.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00' / 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 351.60' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 9.6"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=1.09 cfs @ 20.00 hrs HW=354.54' (Free Discharge) - =Culvert (Passes 1.09 cfs of 79.79 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.09 cfs @ 7.96 fps) 3=Orifice/Grate (Orifice Controls 0.01 cfs @ 0.71 fps) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 5 Pond 2P: Pond 2 Hydrograph I I I L I J ___1___.-� I 1 1 1 1 I 1 ' : ' ■Inflow J 1 1 J L J 1 I J _ ____ _ J L J I I 1 I 1 e7.a 0e 1 I I 1 ■Outflow ' I 1 I I I I ■Primaryr -Inflow Area=48:350 ac ■Secondar y 105. I 1 I I I _ ,Oo� -J-Peak-Eaev=354:54'-- 954-'/',/','', ----I----1 I J L Stprage='10455;af-. 854-' 1 T T r l r I 1 r 1 60"'' I 1 I 1 I I I I 1 I I I I 75y'' J 1 J L J 1 J L J / ' ' / 1 I 1 I I I I I I / ' ', 1 I 1 1 1 I I I I I I 65�'/' ti r r r r 1,- -r --' I I I 1 I 1 1 I I I v 603/ 41 T 1 r i r , r 55"'/ I I I I I I 1 I I I I I I I I 1 I I I 1 0 50y' 1 __A I J L I L J 1 1 J L J _ , , , / I I I I I I I I I I I / ' ' : _1 J L I J L J____L__-1 V. 45" I I I I 1 1_ , , , 40� 1 -r I �____r I ___r___-____r I , r , I I I 1 I I 1 1 1 1 35� 1 T 4 r 1 r 1 1 30y'' 1 I I I I I I I I I 1 I ' 1 L JI L J 253 I I I I 204' rie 10"'-' .roods 7 .„ ,% "Y' J , l » ®. /riiiiJ46, 0 r /�yriivi i/i.".riy r i 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ar0 Qr6 ( .ro.. vim p(I 1 gA)( - 4) (4,tji 4,c4) post-county soin Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.19" for 2 yr event Inflow = 103.23 cfs @ 12.00 hrs, Volume= 4.801 af Outflow = 1.27 cfs @ 20.00 hrs, Volume= 0.719 af, Atten= 99%, Lag= 480.0 min Primary = 1.27 cfs @ 20.00 hrs, Volume= 0.719 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 354.70' @ 20.00 hrs Surf.Area= 1.399 ac Storage= 10.471 af (4.081 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 167.0 min ( 973.0 - 806.0 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 351.60' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 9.6"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=1.26 cfs @ 20.00 hrs HW=354.70' (Free Discharge) 41, L =Culvert (Passes 1.26 cfs of 80.62 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.12 cfs @ 8.18 fps) 3=Orifice/Grate (Orifice Controls 0.14 cfs @ 1.51 fps) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) 5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 7 Pond 2P: Pond 2 Hydrograph I I I I 1 I I/ - 1 1 J L l J L I J L J ■Inflow / I 1 1� � I L Outflow •115- ; ; ; tlil�dwrArea=4ii:35Q a6 �Secondary I 1 I I I I I ry '• ', ' 105- ,; .___�_ _a I a I t__ a_ P � lv- 54.71 0 10of,/,,/ ,, , 1 T I 1_ r 1 I 1 I I I 1 1 I w ''/-I __. I I 1 / � I 1 I I 1 1 1 I I , 85 y ___T____1____ ____ ____1__ _r___y____T____1____y____r-__y____. 1 1 1 1 I 1 1 1 1 1 1 1 1 80y', I T I 1 r I I 1 T 1 1 r 1 1 1 1 J L 1 ; J 1 1 J L 75y'/ I I I I I I I I 1 I 1 1 1 I 1 I I 1 I 1 I .i 854', T r 1 r r I r -1----' v p I I I 1 1 1 I 1 1 I 60�/ 1 1 1 1 I 1 1 I I I 1 I 1 I ---1 I I II 50- -I r 1 r 1 r , r 1 r I I I 1 1 I I 451}', 1 1 I 1 1 1 I I I I J 1 J L I ___I__ _J L I J L J 40 ' 35" I I I I I I i 1 1 1 I I 301/ 1 I T I r I r i J 1 r 1 1 1 1 L I L —25 1 I 1 1 10. " � /, /e / liEGIM YJsiJ —IV../�iied. "fz / . iy�.r .,r/.Prrvi0 o ' 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) O lel.; (r N160 cf s) I,°IIA6-P) P (4. 8clac -) CoT post-county soln Type ll 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD© 10.00 sin 08123 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 2.54" for 10 yr event Inflow = 218.44 cfs @ 12.00 hrs, Volume= 10.223 af Outflow = 15.97 cfs @ 12.77 hrs, Volume= 4.714 af, Atten= 93%, Lag= 46.3 min Primary = 15.97 cfs @ 12.77 hrs, Volume= 4.714 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 356.08' @ 12.77 hrs Surf.Area= 1.471 ac Storage= 12.452 af (6.062 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 113.7 min ( 903.9 - 790.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00' / 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 351.60' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 9.6"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=15.87 cfs @ 12.77 hrs HW=356.08' (Free Discharge) t- =Culvert (Passes 15.87 cfs of 87.78 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.36 cfs @ 9.95 fps) 3=Orifice/Grate (Orifice Controls 2.63 cfs @ 5.22 fps) 4=Orifice/Grate (Weir Controls 11.89 cfs @ 2.01 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=351.60' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post-county soln Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 9 Pond 2P: Pond 2 Hydrograph I I I ' I ■Inflow ,' , - 1 r I218.44 cfs _- ____�____. L,Outflow Inflow Area=48.350 ac-. ■Primaryondary 240� Sec -Peak Elev=356.08'- J J. J L ----'- -� - 220 200� -- -J-Stbrage_12.452-af- 180 = 1 1 T 1 r r 1 r 1 r 1 160� I • 140 - I J 1 L L J 1 J L J • 120?' 1 I V. 100�' • I '80-' r r 80� I 15.97 cfs �'20 :rr.����...i��r� :40. 6r)i, ,!1////!/ 0000a. // /// '// 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Ocad e(4)(8:1A(s4/64.eto) /0,US atc•4' - 4,0 = 25' C14 post-county soln Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 10 Summary for Pond 2P: Pond 2 [93] Warning: Storage range exceeded by 0.28' Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 5.39" for 100 yr event Inflow = 449.80 cfs @ 11.99 hrs, Volume= 21.722 af Outflow = 298.57 cfs @ 12.10 hrs, Volume= 16.042 af, Atten= 34%, Lag= 6.2 min Primary = 98.14 cfs @ 12.09 hrs, Volume= 12.436 af Secondary = 200.43 cfs © 12.10 hrs, Volume= 3.605 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 351.60' Surf.Area= 1.238 ac Storage= 6.391 af Peak Elev= 358.28' @ 12.09 hrs Surf.Area= 1.570 ac Storage= 15.376 af (8.985 af above start) Plug-Flow detention time= 191.3 min calculated for 9.619 af(44% of inflow) Center-of-Mass det. time= 47.3 min ( 821.0- 773.7 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 351.60' 5.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 9.6"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) post-county soln Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 11 Primary OutFlow Max=97.96 cfs @ 12.09 hrs HW=358.24' (Free Discharge) —1=Culvert (Inlet Controls 97.96 cfs @ 19.96 fps) 2=Orifice/Grate (Passes < 1.67 cfs potential flow) —3=Orifice/Grate (Passes < 4.43 cfs potential flow) —4=Orifice/Grate (Passes < 150.80 cfs potential flow) Secondary OutFlow Max=194.36 cfs © 12.10 hrs HW=358.25' (Free Discharge) T 5=Sharp-Crested Vee/Trap Weir (Weir Controls 194.36 cfs @ 4.13 fps) Pond 2P: Pond 2 Hydrograph I I ■ Inflow ' Iiiiiii t---I--------- ----:---,----i- 1 I Outflow 500 Inflow Area= 8. 50 ac o Prima _ Peak EIew=358.28' 450-- • i r 1 i r - Stprage=15.;76 of 400 -I T l r 298 57 cfsI 350--- I / T _ I I I 300-e N V I I 250_-. 1 L .. J L J L O i 200-• 1 J I ' - , 150 I 50 ' 111111.1•11 .. ...-.......7 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ay; p t f q' 1 S POND 2 fi LXiS±'ñ° 0 corqd-cern .... Reach 'on• Link Routing Diagram for Pre forested Prepared by{enter your company name here}, Printed 4/24/2014 HydroCAD®10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Pre forested Type 1124-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/24/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1S: POND 2 Runoff = 14.88 cfs @ 12.30 hrs, Volume= 1.762 af, Depth> 0.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1.5 Rainfall=3.60" Area (ac) CN Description 0.700 98 Roofs, HSG B 0.200 98 Roofs, HSG C 0.200 96 Gravel surface, HSG B 0.100 96 Gravel surface, HSG C 35.000 55 Woods, Good, HSG B 10.400 70 Woods, Good, HSG C 46.600 59 Weighted Average 45.700 98.07% Pervious Area 0.900 1.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.7 100 0.1600 0.19 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.70" 19.6 2,116 0.1300 1.80 Shallow Concentrated Flow, Channel Woodland Kv= 5.0 fps 28.3 2,216 Total Subcatchment 1S: POND 2 Hydrograph / I i i i r r T i ❑Runoff 16-? I J L L 1 L J L L J 1 - '' I I L14.88 cfs "/ I I I 15~ -I---_-I IF--_—f_T_y p e_I11 24�, t _- ._ 147..- I 00 /' I , 13 ' 1 L 1 i J 1 RMIMfa■ =3.^Yt t . ,',12� I 600-ac-- F i 10 Ruoff Area-46. 11�' ,o, , - I r 0 1�unoff Volume=l ;76�2 of 1 I in- I I I U g� 1 1 1 I Runoff-Deptk O. ' - I I 1 I I I I I 1 3 8� 1 1 1 rr r y. ØF1ow1.ength' 2;216" J L i 7-_, ' 1- i i ' T�=28,.3 rain 5 J i 4� 1 T '3- � L J L L i 1_ 4� _ L- _ J I ] I I I I I 2 ' I I 1 1 i'''ed I I I 1 1 ' I 1 I I I 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre forested Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here} Printed 4/24/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 3 Summary for Subcatchment 1 S: POND 2 Runoff = 16.60 cfs © 12.29 hrs, Volume= 1.911 af, Depth> 0.49" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 2 yr Rainfall=3.70" Area (ac) CN Description 0.700 98 Roofs, HSG B 0.200 98 Roofs, HSG C 0.200 96 Gravel surface, HSG B 0.100 96 Gravel surface, HSG C 35.000 55 Woods, Good, HSG B 10.400 70 Woods, Good, HSG C 46.600 59 Weighted Average 45.700 98.07% Pervious Area 0.900 1.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.7 100 0.1600 0.19 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.70" 19.6 2,116 0.1300 1.80 Shallow Concentrated Flow, Channel Woodland Kv= 5.0 fps 28.3 2,216 Total Subcatchment 1 S: POND 2 Hydrograph I I I I I _ L 1 ,_ 1 J ' ' ■Runoff 18� I I I I- 1 1 I I - I I 1 I I I 17�, �15 80 Cry J .4 I --- , hr 16� _ 1� T e 2 1 I I I 15 r , r r , 0 , yr Raifa113.70" I I I 1 I 14' _ 1 J LL 1 1 J... 13; IL - I - - RunoffI A ea:-i 46.6 Q0I o_. ,, - _,2� /� RunoffV6fume-191- of I I I y : ,- . 10; ,-----*----_I r----r- off-DeptO.---y -+----_-Rtinf d-9"- - I I I I I 1 1 11 //� 3 9? 1 J L L 1 1 F1aW Len th=2!`1 6' - ,- I I I I TTT"` LT: 8? '1 r r I r n r r 1 r I I I I 1 _ 7� .____1____� �____�____a �____, TO=28,.3-min-- , 1 I I I ' I I 6� _ 1 I ,- I I 1 I - - I I I I 55? ____-«---- I 1 I ' I I I I I ' I I 4-? _ J. I L E I II I I r r -____1____ .. I 1? 1 I I 1 0 /JJf 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre forested Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here) Printed 4/24/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 1S: POND 2 Runoff = 59.93 cfs @ 12.25 hrs, Volume= 5.467 af, Depth> 1.41" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10 yr Rainfall=5.60" Area (ac) CN Description 0.700 98 Roofs, HSG B 0.200 98 Roofs, HSG C 0.200 96 Gravel surface, HSG B 0.100 96 Gravel surface, HSG C 35.000 55 Woods, Good, HSG B 10.400 70 Woods, Good, HSG C 46.600 59 Weighted Average 45.700 98.07% Pervious Area 0.900 1.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.7 100 0.1600 0.19 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.70" 19.6 2,116 0.1300 1.80 Shallow Concentrated Flow, Channel Woodland Kv= 5.0 fps 28.3 2,216 Total Subcatchment 1S: POND 2 Hydrograph � I 1 L 1 J L 1 I L 65% I I I I( I ■Runoff 1 59.9E.ds f -Type " -I I- L 1 ____J__1-0;-yr Rainfall#5.60' 50'' V - I _ I --Runoff-Area=46.¢00 'ac ' I I I I I i 4UY r ; ftunoff Votume=5:467 of Y. 35- 4 Runoff Depth 1.A1 ' u. Flaw Length=2,21 6' — 30�_ " I I I . _1 J L i Tc=28;.3 25� ' i I I ICCQ — I 5— 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pre forested Type 11 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/24/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 1 S: POND 2 Runoff = 166.87 cfs @ 12.23 hrs, Volume= 14.293 af, Depth> 3.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100 yr Rainfall=9.10" Area (ac) CN Description 0.700 98 Roofs, HSG B 0.200 98 Roofs, HSG C 0.200 96 Gravel surface, HSG B 0.100 96 Gravel surface, HSG C 35.000 55 Woods, Good, HSG B 10.400 70 Woods, Good, HSG C 46.600 59 Weighted Average 45.700 98.07% Pervious Area 0.900 1.93% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.7 100 0.1600 0.19 Sheet Flow, Sheet Flow Woods: Light underbrush n= 0.400 P2= 3.70" 19.6 2,116 0.1300 1.80 Shallow Concentrated Flow, Channel Woodland Kv= 5.0 fps 28.3 2,216 Total Subcatchment 1 S: POND 2 Hydrograph I I I I I I I 1 1 ; 1 I I 180 I II I p Runoff _r__ _y r , _I - _ _ r_ _T__ _- I r r 186 87 cfs] P, I I 1 60 1 J TyPe 11-24ihr- 1 I f1 1 - I I I I I 1 150 1 I 10¢yr Rainfall 9-.1r-- ,ao 1 1 130 1 I Runof -Airea:46.60O ac 'I r r - r T 1 I r r 120 0 -R-titiI of VI oluI me=14:293 af- ; _ 110 ' I I I iinont ,368" _ ,Oo i I 90 ' 1 F ow-engthia,216'- Ii 80 I I I 1 1 I 70 : -Ii i / 1 i i Tc=28 3 thin I 1 1 I / I 1 60 ; EN ,59- 50 y ----+- 1 1 1 I I I I I I 1 40 1 J t t 1_ t 1 J 1_ 1 , I 1 I I I I I I 30 I 1 1 1 / 1 I 20 1 J1 I I t t -_ 4 1 10 I I A • o ////.EI, �: . . 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2P Pond iff, evrew ref (oriaiditms Subcat Reach 'on• 111 Routing Diagram for post Prepared by{enter your company name here}, Printed 4/25/2014 HydroCAD®10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC post Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 2 Pipe Listing (selected nodes) Line# Node In-Invert Out-Invert Length Slope n Diam/Width Height Inside-Fill Number (feet) (feet) (feet) (ft/ft) (inches) (inches) (inches) 1 2P 346.00 334.58 75.0 0.1523 0.013 30.0 0.0 0.0 post Type II 24-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 3 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.07" for 1 yr event Inflow = 92.11 cfs @ 12.00 hrs, Volume= 4.292 of Outflow = 0.42 cfs © 20.00 hrs, Volume= 0.255 af, Atten= 100%, Lag= 479.9 min Primary = 0.42 cfs @ 20.00 hrs, Volume= 0.255 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 350.00' Surf.Area= 1.157 ac Storage= 4.475 af Peak Elev= 353.25' @ 20.00 hrs Surf.Area= 1.323 ac Storage= 8.509 af (4.035 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 161.0 min ( 969.5 - 808.4 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=0.42 cfs © 20.00 hrs HW=353.25' (Free Discharge) L =Culvert (Passes 0.42 cfs of 72.40 cfs potential flow) -2=Orifice/Grate (Orifice Controls 0.42 cfs @ 8.52 fps) 3=Orifice/Grate ( Controls 0.00 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=350.00' (Free Discharge) 5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post Type 1124-hr 1 yr Rainfall=3.50"x 2 Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 4 Pond 2P: Pond 2 Hydrograph I I I , I I 1 1 I 1 --- ii,Inflow T I , r - f.0 01$ _-. _.._ ____r__._ 1 'r___.' MoutiioW T r InflowrArea=4.8:350 ac-- 'Primary 100� ■Secondary 95tt, PtakIeV=353. 5' 85y J L J -Sto. ger84Q9-of-, 80i- ,' ,' ,' L, J 1 I J L I- J LI 4____L___J 75-2' , , , _J__ -1 I J L L J L 1 I I I 1 I y 60t-„ -,-_ _- , r r , r 1 , , U 55.3 - - 1 I 1 I I I ,- - -T I -Ir r , r I 1 r , 3 50 ' o -T I i r , r I I I 1 I I- L-2 45J -1 1 I I I I 40" 1 I 1 1 35 ' L1 I L 1 I 30y .1 1 L J L I 4 L J I 25y J__ _1 L L J 20 1 OOrd J✓YJ�fee, rJ/JJ✓deeif/./ .6'/.i'i/rJJXe7:49:%/r..,./i- ..„ 0 5 8 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 sin 08123 ©2013 HydroCAD Software Solutions LLC Page 5 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.13" for 1.5 event Inflow = 97.64 cfs © 12.00 hrs, Volume= 4.544 af Outflow = 0.43 cfs @ 20.00 hrs, Volume= 0.263 af, Atten= 100%, Lag= 480.0 min Primary = 0.43 cfs @ 20.00 hrs, Volume= 0.263 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 350.00' Surf.Area= 1.157 ac Storage= 4.475 af Peak Elev= 353.44' @ 20.00 hrs Surf.Area= 1.333 ac Storage= 8.754 af (4.279 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 161.8 min ( 969.0 - 807.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00'/ 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=0.43 cfs @ 20.00 hrs HW=353.44' (Free Discharge) L =Culvert (Passes 0.43 cfs of 73.50 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.43 cfs @ 8.77 fps) 3=Orifice/Grate ( Controls 0.00 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=350.00' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post Type II 24-hr 1.5 Rainfall=3.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 6 Pond 2P: Pond 2 Hydrograph I I 1 I _ I L I J I I I JI I ___ ," - J L 1 J L l a I J L J L J • Inflow ,� ,' �Y7046h 1 I 1 1 Li Outflow , 5 _r___ -I1 1 i ----inflowTAFea=48 35 ■O ac-- Prima ry ■Secondary 105 ,',,',• - I I I 1 1 1 1 I QI/� I 100 ,' - J 1 J L --------I-Peak-Eaev=353:44- - 954- ,' ,' ,'_,___...I i 1 J 4 I ----I----J .1. 1 �pJ----~----I 90� ,' , ' *- T -I- . -; ;- v orage�f"•-75'af- 85�" I T 1 1 r I 1 i r 7 I 80�" 1 1 1 i I 1 I 1 I I 1 I 1 I I I I 1 1 I I 75y " • J 1 J L J 1 J L , I I I I I I I I 1 1 I I I ? , ,:~ , ,' I I I I 1 I I 65 ,',, ,, , - -1- 1 1 1- -I I -r 1 r1 I r -y1t60 " I ---- T i 1 r I 1 r I 1 r --1 1 1 I55y I I 1 I I I I 1 II 3 0 550 J I J L I l- J 1 I J L I I 1 I I I I 1 1 1 1 I ' 4' /u- 45=' , , , J 1 I J t I _L J_ L I1 JI 40a _ _� _ 1 , 11_ __ _. _I_ _ _r1 r 1 r�I -I "353 I T r I 1r 1 r 30,' I i I 1 i I I 1 J L __ ____L_ I I 1 I I 20 ',''''"'' '_� 043 cfs 000 da 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD© 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 7 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 1.19" for 2 yr event Inflow = 103.23 cfs @ 12.00 hrs, Volume= 4.801 af Outflow = 0.44 cfs @ 20.00 hrs, Volume= 0.271 af, Atten= 100%, Lag= 480.0 min Primary = 0.44 cfs @ 20.00 hrs, Volume= 0.271 af Secondary = 0.00 cfs © 5.00 hrs, Volume= 0.000 af Routing by Stor-lnd method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 350.00' Surf.Area= 1.157 ac Storage= 4.475 af Peak Elev= 353.62' @ 20.00 hrs Surf.Area= 1.342 ac Storage= 9.002 af (4.527 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 162.5 min ( 968.6 - 806.0 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00' / 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=0.44 cfs © 20.00 hrs HW=353.62' (Free Discharge) L =Culvert (Passes 0.44 cfs of 74.59 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.44 cfs @ 9.01 fps) 3=Orifice/Grate ( Controls 0.00 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=350.00' (Free Discharge) 5=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post Type II 24-hr 2 yr Rainfall=3.70" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 8 Pond 2P: Pond 2 Hydrograph 1 I 1 1 1 I I I T 1 r I 1 i T r s1 Inflow / _ J 1 1 J L I 1 I- J L 1 J L J ,' / I I I I ,/ .____1____+____1____.� r_ �N .. .- LJ Outflow it n kwTArea=48 350 acr- ■Primary 115. ■Secondary / I 1 I I 1 I 1 I 1 1 I 105�/ I i ; L I Peak� -3-6-2'lev=3$ -- 95J' J 1 I J L I L J g 9� O2 of 90 I 1 1 I 1 1 1 1 I I I I 80 ''' 1 T 1 1 r 1 1 1 T 1 r 1 3 ,/i ' 1 1 1 J L I I J 1 J L 1 75_ 1 I 1 1 1 I I 1 I I I I I 70- • I I 1 I I I I I I I I I itl C5�' -I T 1 l r 1 r n r 1 r l V 1 1 1 1 1 1 1 1 1 1 1 I - 601' - I 1 I I I I I 1 1 1 I I O 55, , I I I I I I I I I I I I I y -I T I 1 r I r 1 T I 1 r 'I T. 50_ 1 1 I I 1 I 1 1 I I 1 1 45 ' 1 I I I I 1 I 1 I I / , / ,' I _1 I J L I ___LJ____L_ 1 J L J 403 1 1 I 1 1 I 1 I I 1 35t }- -1- -� r r y I I I \ I I I I I 30s' I 1 1 r 1 1 1 r I I J I 1 1 J L 1 _L_ _ 1 1 25 I 1 1 20 15 ,,;,•�/� �������� �� ��� ��i� �j �� ����� our 10 TT �/ �'� �i� TJi��i, r!l „0" ,0' ii JJi. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 sin 08123 ©2013 HydroCAD Software Solutions LLC Page 9 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 2.54" for 10 yr event Inflow = 218.44 cfs @ 12.00 hrs, Volume= 10.223 af Outflow = 6.45 cfs @ 15.03 hrs, Volume= 2.652 af, Atten= 97%, Lag= 182.1 min Primary = 6.45 cfs @ 15.03 hrs, Volume= 2.652 af Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 350.00' Surf.Area= 1.157 ac Storage= 4.475 af Peak Elev= 355.91' @ 15.03 hrs Surf.Area= 1.462 ac Storage= 12.200 af (7.726 af above start) Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= 192.5 min ( 982.7 - 790.2 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/ Outlet Invert= 346.00' / 334.58' S= 0.1523 '/' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=6.37 cfs @ 15.03 hrs HW=355.91' (Free Discharge) L =Culvert (Passes 6.37 cfs of 86.92 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.57 cfs @ 11.58 fps) 3=Orifice/Grate (Orifice Controls 1.02 cfs @ 5.18 fps) 4=Orifice/Grate (Weir Controls 4.79 cfs @ 1.48 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=350.00' (Free Discharge) S=Sharp-Crested Vee/Trap Weir ( Controls 0.00 cfs) post Type II 24-hr 10 yr Rainfall=5.60" Prepared by {enter your company name here) Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 10 Pond 2P: Pond 2 Hydrograph I ' 'I ill Inflow ,'' I I I I I � T 1 r 1---'1----7--- "----1---- I rewas 1 El Outflow 1nflow:Area=48.350 ac ■P""'a" } ■Secondary 240-- � - -Peak EIev=355.91' J 1 J L ____L___J - 220-- 200J J i J L _L_ _J Stbrage-12.200 of 180- I I I I l T l r -. -1 r 1 r l 160-- a 140 J 1 J L ___L J L J L -I120� 1 O tL 100�� 1 I 80-? 60e' 20� /��////JJiJJY-Aei' I�//:+//i/JIr� 0000 ds ��� ����,/ ~1 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) post Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Pond 2P: Pond 2 Inflow Area = 48.350 ac, 27.71% Impervious, Inflow Depth > 5.39" for 100 yr event Inflow = 449.80 cfs @ 11.99 hrs, Volume= 21.722 af Outflow = 202.66 cfs @ 12.12 hrs, Volume= 14.026 af, Atten= 55%, Lag= 7.4 min Primary = 95.26 cfs @ 12.10 hrs, Volume= 11.689 af Secondary = 107.32 cfs @ 12.12 hrs, Volume= 2.337 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 350.00' Surf.Area= 1.157 ac Storage= 4.475 af Peak Elev= 357.66' @ 12.12 hrs Surf.Area= 1.553 ac Storage= 14.850 af (10.376 of above start) Plug-Flow detention time= 191.8 min calculated for 9.520 af(44% of inflow) Center-of-Mass det. time= 60.7 min ( 834.3 - 773.7 ) Volume Invert Avail.Storage Storage Description #1 345.00' 15.376 af Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (acres) (acre-feet) (acre-feet) 345.00 0.754 0.000 0.000 346.00 0.800 0.777 0.777 348.00 0.892 1.692 2.469 348.50 0.915 0.452 2.921 350.00 1.157 1.554 4.475 352.00 1.258 2.415 6.890 353.00 1.310 1.284 8.174 354.00 1.362 1.336 9.510 356.00 1.467 2.829 12.339 358.00 1.570 3.037 15.376 Device Routing Invert Outlet Devices #1 Primary 346.00' 30.0" Round Culvert L= 75.0' RCP, groove end projecting, Ke= 0.200 Inlet/Outlet Invert= 346.00' / 334.58' S= 0.1523 'I' Cc= 0.900 n= 0.013, Flow Area= 4.91 sf #2 Device 1 350.00' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 354.50' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 355.70' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Secondary 356.33' 134.0 deg x 20.0' long Sharp-Crested Vee/Trap Weir Cv= 2.48 (C= 3.10) Primary OutFlow Max=95.26 cfs @ 12.10 hrs HW=357.65' (Free Discharge) t- =Culvert (Inlet Controls 95.26 cfs @ 19.41 fps) 2=Orifice/Grate (Passes < 0.65 cfs potential flow) 3=Orifice/Grate (Passes < 1.61 cfs potential flow) 4=Orifice/Grate (Passes < 131.86 cfs potential flow) Secondary OutFlow Max=102.71 cfs @ 12.12 hrs HW=357.63' (Free Discharge) S=Sharp-Crested Vee/Trap Weir (Weir Controls 102.71 cfs @ 3.44 fps) post Type II 24-hr 100 yr Rainfall=9.10" Prepared by {enter your company name here} Printed 4/25/2014 HydroCAD® 10.00 s/n 08123 ©2013 HydroCAD Software Solutions LLC Page 12 Pond 2P: Pond 2 Hydrograph I I I I 1 1 ■ Inflow -----+--------y---- -- MYOdI - ---- ----I-- �-- - - -� fiOutflow Inf�owArea� 8. 50 ac oon5„ Primary 450L , Peak Elev=357.66' - 1 St$ rage=14.$50 of 400 - Tr , T l r 350 1 � T l -I 1 300� I J L 202 68 cfs 250� 1 J L ___ L J L s I I LL 2007- 1 J L J L J L ' I 107 32 cis sod' // //.U///.%/////.G%� // /// � /1/111///I///���ir. 0 k Ail 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours)