Loading...
HomeMy WebLinkAbout1987-07-15 Mitigative Drainage Study SPR 3 Y V PL 0 Y N,(f��,p rre::e' • r r r r e {. . F CRUSAD51q PEi4 Molth Al?do per, Massc?Cl U,50tts May 26 997 HA YES ENGINEERING, INC. ('%VI/ Engineers & Land Surveyors 603 Sa/em Street, W81(efie/d, Mass 01880 REFER TO FILE # NAME C.V \,1 Sr-\S'� DATE HAYES ENGINEERING, INC. 603 SALEM STREET MADE BY Lr a WAKEFIELD, Mrs 01880 � MEMO (617) 246-2800 CALCULATION CD -?Soo,p 4v,-?Soo, s t 5 r " 44 zo ,-1 r= ao K"='� CAPAGIT4' 08-- �cg" C'.+��JE�� khAD V, CQt TZOL \Ivl 1'T�-� �rcA17V�lATE D�PTtsc oq ^3oZ CTr35.�'-3Z.G'� = ��r C.F5 _ REFER TO FILE 1 ?era NAME DATE - 2- £ ` HAYES ENGINEERING, INC. MADE 8Y 603 SALEM STREET WAKEFIELD, M:� 01880 El (617) 246-2800 CALCULATION - Zali SO C — 9,�7Z. — Z. - a d Rai�.}V:A 4 zzm Cr-5 I I REFER TO FILE # o'R Oo3o NAME DATE HAYES ENGINEERING, INC. MADE BY 603 SALEM STREET WAKEEIELD, Mn 01$80 MEMO (617) 246-2800 CALCULATION a _ 5 'vA- v\ 5\ E CF5 S. �S `8�� cvS t� cFs Zeeclys cFs - s. Gas 4,o s 'M e-C; UNI t S1�P t� b ' . • • • ♦ •+. • 1trti` i /� Ath icCe • • CD 40 B cam,/• O .• � � • it ( . i • -c' op ® • '�! R CE fygroC�n-d a. MU i A AIRPORT-=- �a • ' � ,� ems✓•� •� '4\ •. ,` '~ V � ` • r � ', J 1.47 .9S ¢� , a,• �- + u r ono 17 WATERSHED MAP �,� CO (�� " •5� GRU5A.Dr•R PP,PSR � tdC. Z.S4o Rainfall, Intensity File Z000 Tice Frequency, yrs l'Sbb -4a tin 1 2 S 10 25 50 100 0 5 0.000 4.000 5.200 6.000 6.700 7.700 8.200 '0 e 00 10 0.000 3.199 4.349 4.999 5.719 6.379 6.889 Taa S 0.000 2.649 3.639 4.199 4.799 5.449 5.779 soa 20 0.000 2.299 3.199 3.699 4.199 4.717 5.049 500 25 0.000 2.029 2.779 3.319 3.762 4.196 4.495 A00 p rs 30 0.000 1.619 2.466 2.996 3.411 3.806 4.066 3S 0.000 1.643 2.220 2.705 3.111 3.48S 3.691 boo ti z 40 0.000 1.494 2.014 2.472 2.846 3.207 3.387 ' " :2 . 45 0.000 1.372 1.8S3 2.28S 2.627 2.964 3.130•• � \0o B5 c ?o 50 0.000 1.270 1.722 2.129 2.445 2.7S9 2.923 55 0.000 1.182 1.614 1.997 2.233 2.588 2.750 z \�°`� 1 60 MOO 1.110 1.523 1.883 2.163 2.442 2.603 0.1.-a a vrr.Gres �0 Z 65 0.000 1.048 1.444 1.783 2.051 2.317 2.47S cc koo fvrlocc n ,p is a 70 0.000 0.994 1.376 1.695 1.953 2.208 2.364 7S 0.000 0.947 1.316 1.615 1.865 2.112 2.264 80 0.000 0.906 1.262 1.542 1.787 2.026 2.175 o GQ \ /c• ,o u $5 0.000 0.870 1.214 1.479 1.715 1.949 2.095 50 90 0.000 0.837 1.171 1.421 1.650 1.880 2.021 10 4 e v 95 0.000 0.84E 1.131 1.370 1.590 1.816 1.953 1O 100 0.000 0.761 1.095 1.'23 1.534 1.758 1.891 z 30 ' , a 1G5 0.000 0.757 1.061 1.281 1.462 1.703 1.831 ? 110 0.000 0.7'34 1.030 1.242 1.434 1.650 1.775 20 ° r 115 0.000 0.714 1.001 1.207 1.388 1.600 1.722 120 0.000 0.695 0.973 1.174 1.345 1.552 1.672 125 0.000 0.677 0.948 1.144 1.303 1.506 1.624 130 0.000 0.660 0.923 1.116 1.264 1.466 1.577 sn FIG. O} E ' AND ` 135 0.000 0.64S 0.900 1.090 1.226 1.427 1.533 - ' 140 0.000 0.631 0.879 LOGS 1.190 1.890 1.490 F L. Q 1 M E. Note : Compiled om Seelye Design CHART 2 ISO 10,000 16e 8,000 EXAMPLE - 156 $ QOO U-42 Inches (3,5 feel) 6' f - Q•120 c(s 144 3,000 - 5 - - -,,000 h-W" y* 6 5, 132 0 feer 4, 3,000 (1) 2.5 8,e 5. - 120 (2) 2.1 7,4 1013 2 000 "fl in feel 3' 96 - 1,000 3. _ 1300 84 _ 500 72 400 - 300 / = 1,5 1.5 Z � 60 _ -_-- - z Lt`i 200 U- 1.5 --- LLJ C� 54 � a 48 100 z // < 80 z a c� 60 a . 1'0 1'0 42 � o 50 HW ENTRANCE 40 D CALF TYPE oc I.0 LIJl,a F— 36 30 (1) Square edge with Q 9 tzt Q33 headrall d — --. (2) Groove end with G 30 heodwall r 8 8 (3) Groove end 'Q 27 projecting t0 24 8 .7 7 7 6 To use stole (2) or (3)project 2 1 5 horizontally to %cote (1),then 4 ass straight Inclined line through D and 0 scales,or reverse as 6 3 Illustrated, 6 .6 18 2 15 .5 5 11.0 .5 12 HEADWATER DEPTH FOR HEADWATER SCALES 2a3 CONCRETE PIPE CULVERTS REVISED MAY1964 WITH INLET CONTROL OUREAU OF PUGL1C ROA09 3AN. 1963 5-22 l t I THEORY OF HYDRAULIC ANALYSIS The information contained in the hydraulic section of this report has been generated using a Flood-Routing program run on a Wang 2200 MVP computer. The following description explains the basic theory of the program_ Hydrographs are generated by the system based on pertinent information of the watershed_ Two separate and distinct method- ologies may be utilized to create hydrographs. They may be generated by the system using either the Modified Rational Method or the Soil Conservation Service method. The Modified Rational Method computes the watershed discharge characteristics based on the unit hydrograph method with a peak flow determined by the rational method and a time to peak of ninety minutes plus the time of concentration to the design point in question. The Soil Conservation Service publication entitled "Urban Hydrology for Small Watersheds; technical release no. 55" . The results obtained through use of the rational method described above have proven realistic for small urbanized watershed, while the Soil Conser- vation Service method is generally more applicable to larger, less urbanized watersheds. THEORY OF HYDRAULIC ANALYSIS Page 2 The hydrographs generated are then easily lagged and combined by the program to simulate .actual physical condi- tions. The inflow hydrograph obtained by this procedure is then routed through a pond of given characheristics, the data used for each pond is printed before the results of the actual routing. The flood is routed by the incremental solutions of the equation: z' BIZ AT - `�' az 6T -- S2 S, -- AS z � z Inflow at times 1 & 2 Outflow at times 1 & 2 cJ� S Storage at times 1 & 2 T TIME-2 - TIMEj (time interval) The following are the discharge equations used by the flood routing program: Definition of terms for the following equations: Q = Vl.ow rate; c.f.s. D = Pipe diameter; feet A = Area; square feet H = Head, measured from the flow line; feet h = Effective weir height; feet L = Weir length; feet g— Gravitational acceleration, 32.2 ft/sec2 C ' = an emperically derived factor A. PIPE FLOW EQUATIONS: i) Horizontal pipe: Q =O.00S(l2D��'S(H�D�� 6 FoR O < f4 C l.2D a = CA (299)'S Fof- 14-1.2 D ii) Stand pipe: Q � 4.82 A N. B. WEIR FLOW EQUATIONS: Q= C L N !'5 i) Sharp crested weir: G 3.27+ 0.4( � ii) Broad crested weir: C� 0•433 ( f2h��5�29�.s iii) Roadway section weir: C= 2.7 �•e-41C k'4 O 5_.i T 1 1`41l C OF a a i fug'4 0 1C Y'L H-i P h R Date 115,126/87 Description a DETENTION ARER V CRUSADER PAPER PIPES, WEIRDO Str Diem Elev " Left Lensth Pight Elcv ,Height Type Nn. its ft S/S ft SIS ft ft 1 18 K60 1 fir` Hunter E levatiDn Storage Cutf levy 1 28.SO 0.000 0,00 8 c� 00 0.044 0.82 4.00 0."S5 C.15 ^ 'A.00 1.178 -11.00 E 11:15.00 1.QS? .1-^,.05 Description of hydrograph page PROPOSED S YR STORM INTO DETENTION AREA Ares - 2;'.00 ac. Rat,l ,C, � .420 Time of Concent. = 3'5 thin. Hydrogrnph ' 4 -- total outflow h,ydrograph, Description PROPOSED ? YR STflRN OUT OF DETENTION AREA OGtc 05/��;87 pLg Outflow H'Srcp'R- PROPOSED L YS STORM OUT OF DETENTION AREF Time InfIDw Stu age FIr ation Outflow hr:m5n cf ar ft feet cf, (Tot) 0:0p.0 0.00 0.0000 32.60 0.00 0:05.0 0.02 0.0001 32.60 0.00 0:10.0 0.12 0.0007 32.61 0.00 0:15.0 0.30 0.0021 32.62 0.01 0:20.0 0.53 0.0049 32.64 0.0E 0:25.0 0.S31 0.0092 32.SS 0.07 0:30.0 1.16 0.0152 1:12.74 0.IS 0:35.0 1.51 0.0230 32.S1 0.'9 0140.0 1.84 0.0318 22.89 0.49 0:45.0 2.1.1 0.0412 22.97 0.75 0:50.0 2.33 p.0543 ?2.02 0.SO 0:55.0 2.5p 0.0611 .04 0.96 1:00.0 2.60 0.0719 i'3.OS 1.05 1.05.0 2.59 0.0825 121.09 1.14 1:10A 2.77 0.0931 33.11 1.?21 1.15.0 2.°E 0.1040 83.14 1.33 1:20.0 ...10 /0}.116A, 3 .1, 1.1;4 1:25.0 A G.1c126 33.20 1.59 1.30.0 6.07 0.1555 1.93 1:35.0 11.10 0.2017 33.36 2.30 1:40.0 14.07 0.2701 23.51 .1.10 1145.0 15.37 0.3466 S3.69 .1.10 1:50.0 15.87% 0.4222 33.86 5.1° 1155.0 IS.Go" 0.4914 34.01 2:00.0 15.37 0.5531 34.10 6.87 2:05.0 14.72 0.6072 34.is 7.45 2110.0 14.07 0.6534 34.25 7.67 2:Is.0 12,53 0.6590 34.30 8.37 0,00.0 11.18 0.7121, 34.313 0.64 L 2 2:25.0 8,62 0.72 09 24. 4 $,74 2:30.0 6.07 0.7115 34.33 S.53 2 MD.0 5.19 0.6916 34.30 9.40 2."0.0 4.32 0.6675 d4.27 S.12 2:45,0 3.86 0.6407 34,23 7.33 2:50.0 3.Al 0 0.6129 3r 13 7.52 2:55.0 3.18 0,S848 24.15 7.21 2,:00.0 2.96 0.5574 24.11 6.91 3:05.0 2.96 0.520$ 34.07 6.63 1:10.0 2,77 MOM 24.0E' G,37 2:is,0 2.73 0.1814 33.99 6.10 2200.0 2.69 0.4593 5.75 3125.0 2.64 0.4391 23.90 5.44 2.20.0 2.60 0.4207 23.8E 5.16 3 5.0 2.55 0.A037 23.92 LL 3:40.0 2.50 0.2881 E'3.78 2:45.0 2.41 0.3724 33.75 4.47 3:50.0 2.33 0.3596 33.72 4.28 255.0 2.22 0.1465 131.69 l.10 Da te 05I2[/87 page 21, Outflow Wgraph: PROPOSED 2 YR STORM OUT OF DETENTION AREA Tire Inflow 5toroge Elmtian Outflow hr:-min r.f ac ft fret cfs (Tut) ",:0G.0 2.11 0."'.38 �'3,66 3.° 05.0 1.9q 0.3?� K.63 3.76 1:10.0 1.84 0.3092 23.60 3.60 ^:i5.0 1.63 0.2970 213.57 21.A4 0.2ON0 13.SS 3.29 A"05.0 1.'24 0.272C 2 .S2 �.1 ' A."20.0 1.16 0.M01 33.�9 2.°8 42S.0 1.00 0.217S 32,46 2.83 2.63 :45.0 0.68 0.2220 2.53 � 150.0 0.SIC, 0.2003 33.37 2.39 '•5S.0 0.41 0.1965 33.3; 2.25 5:00.0 0.40 0.164 0 33.02 2.11 5.05.0 0.21 0.1716 32.2° 1.9n 5.10.0 0.1ti 0.1595 33.26 1.36 a:is.0 0.08 0.1430 33.24 1.71 5120.0 0.03 0.1113fi3 33.21 1.63 5125.0 0.00 0,1250 23.19 1.53 5.20.0 0.00 0.11SL 2,12.i6 1.A L1 5:35.0 0.00 0.1062 33.14 1.E'•n 5.140.0 0.00 0,0973 211j.12 1.26 5:Ift5.G 0.00 0.0890 33.10 '_.19 S:50.0 0.00 0.0808 33.03 1.12 5:55.0 0.00 0.0733 1013,07 1.06 6:00.0 0.00 0.0662 33.05 1.00 6:05.0 0.00 0.0595 33.04 0.95 5110.0 0.00 0.0531 n.02 0.90 6:is.0 0.00 0.0471 In.01 0.95 6:20.0 0.00 0.041S 22.98 0.76 6:25,0 0.00 0.0363 32.9L'. 0.62 u:30.0 0.00 0.0329 32.90 0.52 5:35.0 0.00 0.0296 32.87 0.1 ;:40.0 0.00 0.4263 32.84 4.37 5"4S.0 0.00 0.0214 32.82 0:32 5a50.0 0.00 0.0223 32.30 0.^3 6:55.0 0.00 0.0205 32.79 0.24 7:00.0 0.00 0.0189 32.77 0.21 7:05.0 0.00 0.0175 32.76 0.19 7:10.0 0.00 0.0169 32.75 0.18 7.1S.0 0.00 0.0162 32.75 0.17 7:20.0 0.00 0.0156 32.74 0.115 7:25.0 0.00 0.0149 22.74 0.15 7:30.0 0.00 0.0143 32.73 0.14 7:35.0 0.00 0.013G 32.72 0.13 7:40.0 0.00 0.0130 32.72 0.12 7,,45.0 0.00 0.0123 32.71 0.11 7:SO,0 0.00 0.0117 22.71 0.10 7:55.0 0.00 0.0110 32.70 0.09 cut-flow H'graph: PROPOSED YR STORM OUT OF DETENTION AREA Time Irsflaw. SteragQ Elr4ation Outflow hr:min cfc c ft feet cfs (TDt) G9 00.0 O.aO a.Q10" 3° n nc� �.t_ u.. 9.05.0 0.0097 9L.59 0.07 9:10.0 0.Q0 a.aa91 2,0.58 0.07 8,IrS,0 0.00 0.0061 '138rC.8 Q.QS 8.8Q,Q 0.00 0.0078 c8.67 "ROE, 8:85.0 0.00 0.0071 c1D,55 0.05 8. 0.0 0.00 O.Q0M, K.55 0.04 j 8.25.0 0.00 0.0058 8,55 0.03 9.^0.0 0.00 0.0052 '�JM5 a.Qw 9115.0 0.00 0.0045 32.5n 0.08 9�150.0 0.00 0.0039 '''.54 0.08 8155.0 0.00 0.00 21, u'8.IWJ 0.01 9,00.0 0.00 0.00E5 .38.52 0.01 9'.05.0 0.00 0.MID E'8.58 0.01 9,10.0 0.00 22.51 0.00 0.00 0.0005 38.51 Q.OQ 9:20.0 0.00 - 0.0000 :LrVQ 0.00 Date 05/n/37 Description DETENTION AREA AT CRUSADER PAPER PIPES WEIRS S t r Diem Elev ;! Left Lengthy Right Elev Height Type No. in rt S/S �t S/S tt rt 1 13 'K f,0 1 NP Number Elevation Storast Outflow 1 32.60 0.000 0.00 p 23.00 0.0A� 0.3E 54.00 0."35 5.15 A 35.00 1.1721 11.00 5 :�5.00 1.SLE, 14.05 Description of hEydrographE page 1 PROPOSED 10 YR STORM INTO DETENTION FREA Area ^ In.00 ac. Rat'l 'C' - .A.;OO Time of Cvncent. -y 25 min. Hydrograph: D 5 - total outflow hydrographE Description ; PROPOSED 10 YR STORM OUT OF DETENTION 6 REA Date 05/2G187 2 8utflow F{'grapf,: PPOPBSED 10 YR STORM OUT OF DETENT.TOj.,1 AP,E; Tim Inflow Storogc Elevation 0utxlcm, her:rrdil c f s cc ft fr et cfs (Tot) 0100.0 0.00 0.0000 32.G0 0.00 0:05.0 0.OG 0.0002 2-12.60 0.:00 01,10.0 0.22 0.0012 ?2«51 0.00 0.15,0 0.51 0.0036 w2.G3 0.02 020.0 0.90 0.0082 22.57 0.OG 0:25.0 1.A0 0.0154 32.74 0.15 0:30.0 1.97 0.00M.2 K. MA 0,35.0 .0375 32=94 0•W 2,5r, 0 4 0:40.0 c'.09 0.0517 33.02 0.90 0:45.0 3.52 0.0679 33.05 1.02 C .85 0.0857 _^3=09 O:�o.o 1.16 U/� 5, .3.14 1 3? .5Ja0 ".09 0.104 1.00.0 4.27 0.1235 33.18 1.50 1:05.0 ^,.L1 0.1428 33,22 i.c¢ 1,10.0 4.87 0.1G28 33.'7 1.89 1115.0 5.37 0.1842 1:20.0 C.09 ^.2 0 w'r.:' 2.c'8 ©� i:25.0 7.9G 0.2390 33. 4 2.71J 1:30.0 10.92 0.2834 33.54 27 1:35.0 1s.51 0.3588 23.71 n.27 1:40.0 0.4676 33.95 5.88 1:45.0 ?5.°3 0.5895 34.1C 7.26 1:50.0 a&1.4 0.7120 31.L3 8•64 1:55.0 25.73 0.8285 34.50 a,40 !� 2:i�nnV,0 - 2:05.0 24.27 1.0'287 3A.81 10.39 ?:10.0 23.22 ._4 10..1 2:15.0 20.87 1.2054 35.04 11.15 2:20.0 18.51 1.2634 35.12 11.39 a.05 0 7A.72 1.2989 35.17 11.54 2 3 a.307E, 22S.0 9.44 1.2982 35.17 11.53 2:0.0 ' 9G 1.2790 35.14 11.Ac 2:15.0 7.03 1.2521 35.11 11.34 2:50.0 G.09 1.2196 35.06 11.21 2:55.0 5.73 1.18N 015.02 11.06 3:00.0 5.37 1.14G3 24.96 10.89 3:05.0 5.12 LION 34.91 10.71 310.0 1.87 1.0G92 34.85 10.53 3:Is.0 A.G9 1.0302 24.79 10.16S 320.0 4.51 0.99 12 34.74 10,17 3:25.0 ".39 0.9525 34.G8 aM19 3:20.0 1.27 0.51^2 34.G2 9.81 .°,5.0 A.18 0.87G4 3".57 9.G3 3:40.0 4.09 0.8392 S4.52 9.45 3:45.0 3.97 0.8025 24.4G 9.27 3:50.0 3.s5 0.7658 24.41 9.20 3:55.0 3.G9 0.729G 3r.3E 8.84 Date 05!215l0M, r' gr Outflow Il'graph' PROPOSED 10 YR ITORM OUT OF DETENTION. ARE' Time Inflow Storuje Elevation Outflow 1-jr,111I1 C� �G Ic^Ft Cry. (Tot) A.{0 AO 34,21 8.A" A:05.0 2.30 0.E510 2A,2E, g.a5 A:i0.0 �.ap c.w��h �4.21 70 J �- . A:117.0 gn 0.5aYa 34.I a .c ..J !.a LL J l J 1.2 1.20.0 2.55 0.5EE9 2A.12 7.01 1.25.0 2.2E 0.524E2 IMA 07 S.E9 1.20.0 1.97 0.SOSO 34.03 5.37 ^.:35.0 1.59m 0.4759 3 .9S 5.01 A40.0 1.A0 0.AAC-7 33.91 5.55 ^:45.0 1.iS 0.AIO7 123.85 5.13 A:50.0 0.CIO 0.3915 33.79 1.74 A:SS.0 0.70 0.EE59 33.73 A.37 5:00.0 MI. 0.34 i2l 33.67 i.02 5105.0 0.27 0.3175 ?3.62 .71 5110.0 0.22 0.2950 '3.57 3.A2 5:15.0 0.14 0.2737 33.2 Ij.15 5 210.0 0.06 0.2535 I'..A B ?.a 525.0 0.00 0.8IN5 23.13 2.E8 5:30.0 0.00 0.2108 33.139 2.47 S.-J.S.' 0.00 0.2001 311.271 2.29 5:40.0 0.00 0.1050 ?3.30 2.i2 e. c 1 00 on as 514J.0 0.00 0.1,1 ,20 i._.V 5:50.0 0.00 0.1579 33.25 1.84 5:55.0 0.00 0.1457 ?3,23 1.72 5:00.0 0.00 0.1w;2 33.20 1.51 s:05.0 0.00 0.12S5- 33.is 1.50 E:i0.0 0.00 0.1135 33.1f 1.A1 0:is.0 0.00 0.10,11 33.14 1.K3 E.20.0 0.00 0.0958 122.12 1.25 E:25.0 0.00 0.0859 33.A 1.17 5:30.0 0.00 0.0790 33.03 1.11 5:35.0 0.00 0.0710 32.05 1.05 :A0.0 0.00 0.OW4E E121.05 0.r`9 5:45.0 0.00 0.0579 33.03 0.94 0:50.0 0.00 0.0517 33.02 0.99 r:55.0 0.00 0.0457 3:,.00 0.°4 7*00.0 0.00 0.0403 332.97 0.72 7:05.0 0.00 0.0 50 32.93 0.60 7:10.0 0.00 0.0320 22.89 0.50 7:15.0 0.00 0.0288 32.95 0.A2 7:20.0 0.00 0.0274 32.85 0.33 7:25.0 0.00 0.0250 ?2.84 0.35 720.0 0.04 0.Q245 32.92 0.23 7p.'S.0 0.00 0.02"1 32.91 0.30 7:40.0 0.00 0.02iG 32.80 0.27 7:A5.0 0.00 0.0202 32.78 0.L4 7:50.0 0.00 0.0188 32.77 0.'1 7:55.0 0.00 0.0173 32.76 0.19 Dat•r 05/25/87 F'�ge ' Out.-Flow Wgr,.ph: PROPOSED 10 YR STORM OUT OF DETENTION ^Fn Time Inflow Storage Flev,:Aiar Outflow hr .min c-;1 cc ft feet cfs ,TDt) g:00.0 0.00 0.0158 22.74 0.IG 9:ED.0 0.00 -0144 `2'.73 0.14 9a10.0 C.00 0.0130 132172 0.12 9115.0 0.00 0.0115 70 0.10 9,20.0 0.00 0.0101 22.wa 0.09 9.25.0 0.00 0.0087 32.G° 0.05 9'.301.0 0.00 0.0072 32.67 0.05 0 0.00 0.0058 22.55 0.03 80^0.0 0.00 0.00412 ''2.54 0.02 9:fi5.0 0.00 0.0029 1'2.53 0.01 8150.0 0.00 0.0014 22.61 0.00 8:55.0 0.00 0.0000 32.50 %00 Description DETENTION ^RH, AT CRUSADER PAPER PIPES WEIRS Str Diam Elev N Left Length Right Elev Height Type No, in {t 'f5 It S/S it tt 1 is iL.so Number Elevation Storngv Outflow 1 2.60 0.000 0.00 P 110.00 0.014 0 00 .VL 14.00 0.+;85 C.15 " 115.00 1.172 11.00 56.00 1.923 14.00 Dettription of hydrogr8Ph : Page 1 PROPOSED 100 YR STORM TNTO DETENTION AREA 6rC8 - 23.00 ac. Rat'l `C' - .420 Time of Content. 35 nsin. S-torm �y` 0 0 Hydrograph V E -- total outflow hydrograph Dc,scription PROPOSED 100 YR OUT OF DETENTION AREA 0.:tc 0 'age Outflow Wgrmph: PROPOSED 100 YR OUT OF DETENTION AREA Time Inflow Storage Elcvatin Outflow hr:min cfs a,c ft feet cfs (Tot) 0,00.0 0.00 0.0000 22.60 0.00 0:05.0 0.05 0.0002 32.60 0.00 0.10.0 0.18 0.0009 22.61 0.00 0115.0 0.i2 0.0030 32.63 0.01 0:20.0 0.74 0.0068 12.66 0.04 0:25.0 1.16 0.0128 22.73 0.11 0.110.0 1.E° 0,0212 E2.79 0.25 0:35.0 2.22 0.032A '2.°9 0.51 0,10.0 3.05 0.Q462 33.01 0,s5 0:45.10 IS.so 0.0635 , - 7 0.98 0:50.0 4.59 0.085n 3131.09 1.16 0.55.0 S.218 0.1106 32.15 1."a8 1,00.0 6.17 0.1398 32.22 1.£f, 1.05.0 6.95 0.1725 1�1�.29 1.99 1.10.0 7.72 0.2079 23.77 2.27 1:15.0 8.44 0.01457 23.45 2.61 1 3.3:2a.Q °,5i 0.2865� ����.5 r� 1 1.25,0 11.66 0.3345 94 1:30.0 15.16 0.2977 33.80 1.82 1135.0 25.S7 0.5007 24.02 6.32 1:40.0 31.96 0.6497 34.24 7.93 145.0 21.50 0.6190 24.49 9.35 1:50.0 35.56`� 0.9934 34.74 10.11.1 1155.0 35.08 1.16",1 34.95 10.97 2:00.0 3111.50 1.3253 25.20 11.65 2:05.0 "3.23 1.4757 11G.11 12.27 2:10.0 31.96 1.6147 35.59 12.83 2:15.0 2S.76 1.73739 35.75 13.30 2:20.0 25.57 1.8280 35.87 13.58 2:25.0 20.51 1.8916 35.95 12.93 2:20.0 15.46 1,9193 35.99 14.04 2:35.0 12.S6 1.9224 3r.00 14.W 2:40.0 11.66 1.9126 35.d9 14.01 ?:45.0 10.59 L 8920 25.96 13.93 2:50.0 9.53 1.8667 ?5.93 13.83 3:55.0 8.98 1.8357 35.88 12.71 .00.0 8.14 1.8017 135.84 13.57 2:05.0 8.08 1.75SS 25.79 13.A21 2:10.0 7.72 L 7280 M.74 13.28 3:is.0 7.3.E 1.6889 3s.69 13.12 2:20.0 5.9s 1.6483 M.63 12.96 3:2S.0 6,56 1.6061 35.58 10.79 3:30.0 4.17 1.S625 35.52 12.G2 3:35.0 5.77 1.5173 c15.46 1.2."3 3:�0.n S.38 1.4707 25.40 12.24 3:"5.a 4.98 1.4238 35.23 12.n5 3:50.0 4.59 1.3735 35.27 11.84 3:55.0 4.20 1.3228 35.20 11.64 Date 05/26/87 page 2 Outflow H'graph: PROPOSED 100 YR OUT OF DETENTION ARE; Tiuic Inflow 5toragc Elevation Outflow hr-min ifs tic ft feet cfs (Tot) ^.:00.0 2.80 1.2710 ,.,5.i2 11."? ":Q5.0 ?.42 1.2180 1515.06 11.20 ^:1Q.0 3.05 1.162119 2Ma9 10.97 i:15.0 2.6E 1.1090 A.91 1Ok72 120.0 2.22 1.Q533 34.8E, 10."5 ".25.0 2.00 0,9971 24,.75 10.20 h k{O,Q 1.6`, 0.94 04 3` .6E 9.9� ^ 0 1.n,2 0.8836 34.58 Q.66 1:40.0 1.16 0.8269 nn.50 a3n ".,1S.0 Q.95 0.7701 '34.42 9.20 "150.0 0.74 0.7144 34.33 8.57 1:55.0 M 8 0.6ti`14 34,26 9.06 S:00.0 0.42 0.6112 21.18 7.SO 5105.0 0.30 0.5638 3A:.11 6.98 5:10.0 0.18 0.5191 34.05 6.51 5 15.0 0.12 0.4 769 33.98 6.012 5:20.0 0,05 Q.4L81 33.60 5.42 5:25.0 0.00 0.4027 33.81 4.90 5:30.0 0.00 0.3706 32.71 4.43 s:n5.0 Q.OQ 0.2414 2n.67 1.03 5:40.0 0.00 0.3149 513.61 2.67 S:4S.0 0.00 0.2907 33.56 n.36 s:50.0 0.00 0.2685 33.51 3.09 5:55.0 0.00 0e24 81 33."<6 2.94 6:00.0 0.00 0.2293 33.42 2.62 E:05.0 0.00 0.2120 33.38 6:10.0 0.00 0.1959 33.24 2.24 6:15.0 0.00 0.1810 23.21 2.08 6:20.0 0.00 0.1672 2j.28 1.91 525.0 0.00 MS43 m.25 1.80 5:20k0 0100 0.14n 33.22 1.68 6:35.0 0.00 0.131i K.20 1.58 5:40.0 0.00 0.1206 23.17 1.48 6:4S.0 0.00 0.1107 Is 1.30 6:50.0 0.00 0.1015 33.12 1.30 6:55.0 0.0,0 0.01929 In.11 1.212 7:00.0 0.00 0.08"5 33.09 Lis 7:05.0 0.00 0.0768 32.07 1.09 7:i0.0 0.00 0.0695 In.os 1.03 7:1S.0 0.00 0.06'6 2"'.0A 0.97 7.20.0 0.00 0.05-61 33.02 0.92 7:25.0 0.00 0.0409 33.01 0.87 7.30.0 0.00 0.0441 32.00 0.813 7:35.0 0.00 0.0389 32.95 0.68 7:40.0 0.00 0.0365 32.92 0.62 7:45.0 0.00 0.0343 1112.91 0.56 7:50.0 0.00 0.0320 22.99 0.50 7:5S.0 0.00 0.0207 32.87 M 4 Datc OS/26f37 Outflow H'grnph: PROPOSED 100 YR OUT OF DETENTION AREA Time Inf IZW Storage E levotion Outflow hr.min cfo ac ft feet cis (Tot) 3100.0 0.00 0.0274 32.35 0.39 9105.0 0.00 0.0251 ;22.93 0.314 3".10.0 0.00 0.01229 32.°1 0.29 3:IS.0 0.00 0.030E 32.79 0.CIS 3:20.0 0.00 0.0133 32a.77 0.20 3.125.0 0.00 0.0160 2:2.75 0.1c, 9 a 30.0 0.00 0.0127 32..72 0.13 go35.0 0.00 0.011� 32.70 0.10 $a"0.0 0.00 0.0091 3'.58 0.07 3.45.0 0.00 0.0069 32.u6 0.Os 3.50.0 0.00 0.0046 32.64 0.02 3:55.0 0.00 0.0022 32.62 0.01 a'100.0 0.00 0.0000 22.SO 0.00