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HomeMy WebLinkAbout1990-05-15 Stormwater Report Part I DENIED W.B. Kent & Sons 2070 Salem Turnpike (Route 114) North Andover, MA Hydrologic Analysis 2/2/1990 Prepared for: Owner: Riding Realty Trust 242 Neck Road Haverhill., MA 01930 Applicant: Bayfield Company 242 Neck Road Haverhill., MA 01930 Prepared by: THOMAS E. NEVE ASSOCIATES, INC. 447 Boston Street Topsfield, MA 01983 d r, 1 © f • err • w � +��rh � n� r kill r� o wr - .- SITE �- V. PRE-DEVELOPMENT SUBCATCHMENTS U.S.D.A. SOILS SCALE: . "=$oo� f +T 010 C ............. .. r 1'`0 r� • r ' - SITE 26 POST-DEVELOPMENT SUBCATCHMENTS SCALE: 11=600' RIDING REALTY TRUST HYDROLOGIC REPORT The Riding Realty Trust Parcel is 16 . 94 acres and is located on the Northerly side of Route 114 , west of its Intersection with Berry Street. The Parcel is undeveloped and contains upland areas surrounded by wooded swamps. Water flows through the site from west to east exiting under Route 114 through two culverts . Upstream from our proposed site is a project referred to as "Elm Square" , consisting of an industrial development which is built. Upstream from Elm Square is another development, currently proposed, referred to as Reparian Park. Hydrologically, waster flows from upland areas south of Route 114 , flows through Reparian Park, through and around Elm Square and through our site. This hydrologic analysis creates a watershed model which includes the following: 1. All upstream subattachment areas west. of Route 114 . 2 . Models Reparian Park in its pre-developed form. The conclusions reached will be conservative since the Engineers for Reparian Park must furnish mitigation in their drainage analysis in order to create a zero increase in the downstream rate of runoff . 3 . Models Elm Square in the post-developed condition. 4 . Mitigates the post-developed condition of the Riding Realty Trust Parcel in accordance with the regulations of the Planning Board and the Conservation Commission The compensatory wetland shown on the Site Plan provides for 0 .11 acre feet of storage volume to mitigate for the loss of flood storage by the construction of the driveway; it also provides for storage due to the post developed conditions . Additional upland can be ex- cavated in order to provide complete mitigation for the increased stormwater volume however that condition must be weighted against the environmental intrusion which would result from the work. Please note that Reaches 4 and 6 are not designed for a 100-year storm event and detention does occur on our site. Summary Of Hydrologic Analysis 10 Year Storm Event 100 Year Storm Event Runoff Volume Runoff Volume Rate (CFS) (Ac.Ft. ) Rate CFS LAC.Ft. ) Predeveloped R-4 10. 4 7 . 23 R-4 10 . 3 7 . 50 Condition R-6 9. 1 1. 27 R-6 9 . 1 2 . 41 Postdeveloped R-4 9 .5 6.60 R-4 9 . 5 6 . 60 Condition R-6 3.7 1 .59 R-6 3 . 7 1 . 59 R-4 = Culvert Crossing at center of Kent Site R-6 = Culvert Crossing at East end of Kent Site. Hato for it.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY. Prepared by THOMAS E. NEVE ASSOCIATES, INC. .TOPSFIELD, MA. 3FES.90 8 Applied ier n ut r stems OPED la �2 M D A Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSPIELD, MA. 3FEB.90 H droCAD Release 2 40 (c ) 1986 1990 Applied Microcomputer Systems 10 0 POST DELI G LOP E D FLc)w Ej [D [j] Fl� D I Aergz M ~-_�A+ Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 1OYR) Page I Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIILD , MA. 31JAN90 Hy.droCAD--Relea5e 2.40 1986 , 1990Applied M c o a ter- Sv5tejn5 SUBCATCHMENT 1 to 6 SUBCATCHMENT 1 -> REACH 1 X ,Y = 1 .0 4.4 C1 2> RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL= 4.8 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT ) (% ) (MIN ) --- QRQUNQ COVERS ( % N ) - C G (CFS) 1 63. 18 2010 2.5 64 5%30 83%55 12%93 - 58 - 27.4 SUBCATCHMENT I DRAINAGE AREA 5W OF RT. 114 PERCENT CN 5.00 30 SCS TR-20 METHOD 83.00 55 TYPE II 24-HOUR 12.00 93 RAINFALL= 4.8 IN 100.00 Sa8 PEAK= 27.4 CFS @ 12.72 HRS AREA= 63. 18 AC Tc= 64 MIN VOLUME= 4.73 AF LENGTH= 2010 FT SLOPE= 2.5 % SUBCATCHMENT L RUNOFF DRAINAGE RREn SW OF RT. 114 26 24 AREA= 63 . 18 RC 22 To= 64 MIN 20 CN= 58 18 4- 16 SCS TR-•20 METHOD 14 TYPE II 24-HOUR 12 RAINFALL- 4 .0 IN 0 10 B PEAK= 27. 4 CFS 6 @ 12 . 72 HRS 4 - 4 . 79 AF 2 a c� m v un W r l as as TIME (hours ) Data for W.B.KENT&SONS-PRE-QEVELOP ED HYDROLOGY( 10YR) Page 2 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 d oCAO Rel a e 2.40 (c ) 1986 , 1290 8pplied Microgomputer Systemg SUBCATCHMENT 1 DRAINAGE AREA SW OF RT. 114 RUNOFF PEAK= 27.4 CFS 12.72 HOU S HOUR 0.00 . 10 0 30 .40 .50 0 .70 .8 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 .5 12.00 1 1 .9 4.6 8.7 14. 1 19.5 23.7 26.3 27.3 27.0 25.6 13.00 1 23.3 20.8 18.6 16.7 15. 1 13.7 12.5 11 .5 10.6 9.8 14.00 1 9. 1 8.5 8.0 7.5 7. 1 6.7 6.4 6. 1 S.9 5.7 15.00 I 5.5 5.3 5. 1 5.0 4.8 4.7 4.6 4.S 4.4 4,3 16.00 1 4.2 4. 1 4.0 3.9 3.9 3.8 3.7 3.6 3.6 3.5 17.00 1 3.4 3.4 3.3 3.3 3.3 3.2 3.2 3. 1 3. 1 3. 1 18.00 1 3.0 3.0 3.0 2.9 2.9 2.9 2.8 2.8 2,8 2.7 19.00 1 2.7 2.7 2.6 2.6 2.6 2.6 2.5 2.5 2.4 2.4 20.00 1 2.4 SUBCATCHMENT Z - REACH 2 X ,Y 4.5 6 .7 <1 2> RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL= 4.0 IN SUBCAT AREA LEN SLOPE To WGT'D PEAK NUMBER (ACRE ) (FT ) (% ) (MIN ) --- GROUND COVERS (%CN) --- CN C (CFS) 2 21 .63 1500 3.0 51 40%SS 40%30 20%98 - 54 - 7.7 SUBCATCHMENT 2 RIPARIAN PARK FLOW PERCENT CN 40.00 5S SCS TR-20 METHOD 40.00 30 TYPE II 24-HOUR 20.00 98 RAINFALL= 4.8 IN 100.00 54 PEAK= 7.7 CFS 0 12.57 HRS AREA= 21 .63 AC To= 51 MIN VOLUME= 1 .2G AF LENGTH= 1500 FT SLOPE= 3.0 W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( IOYR) Page 3 ge 4 by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JANSO JAN90 Release 2. 0 (c ) 1986 1990-Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF RIPARIAN PARK FLOW D AREA= 21 .63 AC Tc= 51 MIN N CN= 54 09 HRS SCS TR-20 METHOD jAF TYPE II 24-HOUR RAINFALL- 4 .8 IN PEAK= 7 .7 CFS 12 . 57 HRS ` 4 �iIMF 1 AF TIME (hours) 1ENT 2 RIPARIAN PARK FLOW RUNOFF PEAK= 7.7 CFS @ 12.57 HOURS 0.00 . 10 .20 .30 .40 .50 .50 .70 .80 .90 I 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 t 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 .7 1 .8 3.5 5.3 6.6 7.5 7.7 7.3 6.S 5.7 510 4.5 4.0 3.6 3.3 3.0 2.8 2.6 2.4 2.3 l 2. 1 2.0 1 .9 1 .8 1 .7 1 .7 1 .6 1 .5 1 .5 1 .5 1 1 .4 1 .4 1 .4 1 .3 1 .3 1 .3 1 .3 1 .2 1 .2 1 .2 1 .2 1 . 1 1 . 1 1 . 1 1 . 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 .9 .9 .9 .9 .9 .9 .9 .9 .9 .9 . 9 .6 .6 ,$ .6 .8 .B .8 .8 .6 .8 .7 .7 .7 .7 .7 .7 .7 ! .7 ,90 .7 9.6 `SENT 3 -> POND 1 X ,Y = 1 .0 2.3 C 1 2? 2. 1 1 . 1 ' .8 RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL= 4.8 IN .6 .5 AREA LEN SLOPE Tc WGT'D PEAK .5 ;ACRE ) (FT ) % ) (MIN ) --- QROUND COVERS %CN) --- CN C (CFS ) ,4 .4 S.96 770 1 .3 21 43%93 30%93 27%55 - 83 - 16.9 <1 1 } PEAK (CF5 ) Data for W.B.KENT&SONS-PRE--DEVELOPED HYDROLOGY( IOYR) Page 5 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 dr CAD Release .40 ( ) 1986 1990 Applied Microcomputer Systems 4 8.62 1000 6.0 17 58%55 37%93 5%98 - 71 19.0 SUBCATCHMENT 4 FLOW FROM EAST SIDE OF KENT SITE PERCENT ON 58.00 55 SCS TR-20 METHOD 37.00 93 TYPE II 24-HOUR 5.00 98 RAINFALL= 4.8 IN 100.00 71 PEAK= 19.0 CFS @ 12.05 HRS AREA= 8.52 AC Tc= 17 MIN VOLUME= 1 .27 AF LENGTH= 1000 FT SLOPE= 6.0 SUBCATCHMENT 4 RUNOFF FLOW FROM EAST SIDE OF KENT SITE 18 16 RRER= 8 .52 AC 15 Tc= 17 MIN 14 14 CN= 71 11 SCS TR-20 METHOD U 10 TYPE II 24-HOUR 8 RAINFALL= 4 . 8 IN a 7 5 PEAK= 19.0 CFS 4 G 12 . 05 HRS VOLUME= 1 . 27 RF 1 0� rl_ co c" C CU TIME (hours) SUBCATCHMENT 4 FLOW FROM EAST SIDE OF KENT SITE RUNOFF PE K= 19.0 C S @ 12,05 HOURS HOUR _ 0.00 .10 20 30 .40 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 . 1 . 1 . 1 . 1 .2 .2 .2 11 .00 1 .3 .3 .4 .5 .6 .8 1 . 1 2.2 4.8 10.4 12 .00 1 18. 1 18.3 12 .0 7.5 5.3 4.0 3.2 2.6 2.3 2. 1 13.00 1 1 .9 1 .8 1 .7 1 .6 1 .5 I .S 1 .4 1 .3 1 .3 1 .2 14.00 1 1 . € 1 . 1 1 . 1 1 .0 1 .0 1 .0 1 .0 .9 .9 .9 15.00 1 .9 .9 .9 .8 .8 .8 .8 .8 .7 .7 16.00 I .7 .7 .7 .7 .7 .6 .6 .6 .6 .6 17.00 1 .6 .6 .6 .6 .6 .6 .6 .6 .6 .6 18.00 1 .5 .5 .S .5 .5 .5 .5 .5 .5 .5 19.00 1 .6 .5 .5 .5 .4 .4 .4 .4 .4 .4 20.00 1 .4 SUBCATCHMENT 5 -> POND 2 ?( ,Y 8.7 6.7 C1 1 > Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 6 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 HydroCAD Rplease 2.40 (c ) 1986 , 1990 Aprilied Micr c m uter Systems RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL- 4.8 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK MB CRE) (FT) (% ) (MIN ) - GROUND COVERS ( %CN ) QN C (CFS ) 5 2.28 380 2.6 12 62%55 33%93 5%98 - 70 - 5.9 SUBCATCHMENT 5 FLOW FROM FRONT CENTER OF KENT SITE PERCENT ON 62 .00 55 SCS TR-20 METHOD 33.00 93 TYPE II 24-HOUR 5.00 98 RAINFALL= 4.8 IN 100.00 70 PEAK= 5.9 CFS @ 12.00 HRS AREA= 2.28 AC Tc= 12 MIN VOLUME= .33 AF LENGTH= 380 FT SLOPE= 2.6 SUBCATCHMENT 5 RUNOFF FLOW FROM FRONT CENTER OF KENT SITE 5 . 5 AREA= 2 . 28 RC 5 ' 0 Tc= 12 MIN 4 . 5 CN= 20 ., 4 .0 c- 3 . 5 SCS TR-20 METHOD 3 . 0 TYPE II 24-HOUR 2 . 5 RAINFALL= 4 .8 IN J 2 . 0 PERK,= 5, 9 CFS 1 . @ 12 HRS 1 . 0 VOLUME- . 33 AF .5 0.01 m IT 0 co n m va m TIME (hours ) SUBCATCHMENT 5 FLOW FROM FRONT CENTER OF KENT SITE RUNOFF PEAK 5,9 CFS @ 12 .00 HOURS HOUR 0.00 . 10 .20 0 .40 .50 .60 .70 80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 11 .00 € . 1 . 1 . 1 . 1 .2 .2 .4 .8 1 .8 4. 1 12.00 1 5.9 3.8 2.0 1 .3 1 .0 .8 .7 .6 .S .5 13.00 1 .5 .4 .4 .4 .4 .4 .3 .3 .3 .3 14.00 1 .3 13 .3 .3 .3 .3 .2 .2 .2 .2 15.00 1 .2 .2 .2 .2 .2 .2 .2 .2 .2 .2 16.00 1 .2 .2 .2 .2 .2 .2 .2 .2 .2 .2 17.00 1 .2 .2 .2 .2 .2 .2 . 1 . 1 . l . 1 18.00 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 19.00 1 . 1 . 1 . 1 . 1 . 1 20.00 1 . 1 Data for W.B.KENT&SONS--PRE-DEVELOPED HYDROLOGY( 10YR) Page 7 Prepared 6y THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 roCAR Rel as 2,40 (c ) 1986 1990 Appligd Microcom uter Svrtemg SUBCATCHMENT 6 -> REACH 3 X ,Y = 6.7 6.7 t1 1> RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL= 4.8 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT ) W (MIN ) --- GROUNQ COVERS (%QN ) --- CN C (CFS ) 6 16.00 375 2.0 6 8%55 92%98 - - 95 - 98.9 SUBCATCHMENT 6 REAR OF ELM SQ. AND RENT SITE PERCENT CN 8.00 55 SCS TR-20 METHOD 92 .00 98 TYPE II 24-HOUR 100.00 95 RAINFALL= 4.8 IN AREA= 16.00 AC Tc= 6 MIN PEAK= 98.9 CFS @ 11 .90 HRS LENGTH= 375 FT SLOPE= 2.0 % VOLUME= 4.74 AF SUBCATCHMENT 6 RUNOFF REAR OF ELM SO. AND KENT SITE 95 95 AREA= 16 AC 80 Tc= 6 MIN CN= 95 SCS TR-20 METHOD 5 TYPE II 24-HOUR �} RAINFALL= 4 . 8 IN C) -s PERK= 98 . 9 CFS @ 11 . 9 HRS 1 VOLUME- 4 . 74 RF m -+ N m to w n- 03 m TIME (hours ) Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 8 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydraCAD Release 2,40 (c ) 1986 1990 Applied Microcomauter Systems SUBCATCHMENT 6 REAR OF ELM SQ. AND KENT SITE RUNOFF PEAK= 98.9 CFS @ 11 .90 HOURS HOUR 0.00 .20 30 .40 .50 .60 0 .80 .90 10.00 1 2 .5 2.7 2.9 3.0 3.2 3.4 3.6 3.9 4.2 4.5 11 .00 1 4.8 5.3 6.0 6.7 7.4 8.9 19.0 35.7 61 .3 98.9 12.00 1 60.6 19.4 12.9 10.8 9, 1 7.4 6.5 6.0 5.6 5.2 13.00 1 4.8 4.5 4.3 4. 1 3.9 3.7 3.5 3.3 3.2 3.0 14.00 1 2.9 2.8 2.7 2.7 2.6 2.6 2.5 2.5 2.4 2.4 16.00 1 2.3 2.3 2.2 2.2 2. 1 2 .0 2.0 1 .9 1 .9 1 .8 16.00 1 1 .8 1 .7 1 .7 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 17.00 1 1 .6 1 .6 1 .5 1 .5 1 .5 1 .5 1 .5 1 .4 1 .4 1 .4 18.00 1 1 .4 1 .4 1 .3 1 .3 1 .3 1 .3 1 .3 1 .3 1 .2 1 .2 19.00 1 1 ,2 1 .2 1 .2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 .0 1 .0 20.00 1 1 .0 Data for W.B.KENT&SANS-PRE-DEVEL0PED HYDR0L0GY( 10YR) Page 9 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN9O Hy roCAD Release 2.40 c ) 198E 1990 Applied Microcomputer Svstemp REACH I to 6 REACH 1 - > REACH 2 X ,Y = 3.6 4.4 <1 1> i REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS)_ (SEC) (CFS) 1 21 .0 - - - - .015 78 .0073 5.4 15 11 .7 REACH 1 CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK DEPTH END AREA DISCH (FT ) (S -FT ) (CFS ) 21 " PIPE STOR-IND METHOD 0.0 0.0 0.0 MAX. DEPTH= 0.00 FT .2 . 1 .2 n= .015 PEAK VELOCITY- 5.4 FPS .4 .3 1 .0 LENGTH= 78 FT CONTACT TIME- 15 SEC ,5 .6 2.3 SLOPE= .0073 FT/FT Qin = 27.4 CFS @ 12.72 HRS 1 .2 1 .8 9.8 Gout= 11 .7 CFS @ 12,30 HRS 1 .4 2. 1 11 .5 ATTEN= 57 % LAG= 0.0 MIN 1 .6 2.3 12.5 IN/OUT=. 4.79 / 4.78 AF 1 .6 2.3 12.6 1 .7 2.4 12.5 1 .8 2.4 11 .7 REACH 1 DISCHARGE CULVERT X-ING 114 FLOWING ONTO RIPARIAN! PK 1 . 7 1 .6 t . 4 1 . 3 1 . 2 + 1 . 1 `+ 1 . 0 " . 9 . 8 CL n.. . 6 W . 5 21 " PIPE . 4 n=. 015 L=76' 5=.0073 . 3 . 2 . 1 13. 0Ly ru m v to w n. w m DISCHARGE (cfs ) Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 10 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANSO Hydro GAD Release 0 (c ) 198P . 1990 Applied-Microcomputer: Systems REACH 1 INFLOW & OUTFLOW CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK 26 24 21 " PIPE 22 n=. 015 L=78 ' S-. 0072 20 1$ STAR-IND METHOD 4 16 VELOCITY- 5 . 4 FPS 14 CONTACT= 15 SEC 12 ----- --------ti O 10 Qin- 27 . 4 CFS B Qout- 11 . 7 CFS 6 LAG= 0 MIN 4 2 0� ru rYr �r ko w n ©a m CD TIME (hours) REACH 1 CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK OUTFLOW PEAK- 11 .7 CFS @ 12.30 HOURS HOUR 0.00 10 .20 .30 .40 .60 .60 .7@ ..FAO .90 10.00 1� 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 .S 12 .00 1 1 .8 4.5 8.5 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 13.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 14.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 15.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 16.00 1 6.0 3.6 4.5 3.5 4.2 3.5 4.0 3.4 3.8 3.3 17.00 1 3.6 3.3 3.5 3.2 3.4 3. 1 3.3 3. 1 3.2 3.0 18.00 1 3. 1 3.0 3.0 2.9 2.9 2 .9 2.9 2.8 2.8 2.7 19.00 1 2.7 2.7 2.7 2.6 2.6 2.5 2.5 2.5 2.4 2.4 20.00 1 2.4 REACH 2 REACH 3 X ,Y = 5.4 4.4 <1 2} REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAL( CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC) (CFS ) 2 - 12.0 1 .8 2.00 2.00 .045 1200 .0037 1 .8 683 19.8 Data for W.S.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 1(bYR) Page 11 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 1990 Applied Microcomputer Systame REACH 2 MAIN STREAM THROUGH RIPARIAN PARK DEPTH END AREA DISCH (FT ) ( SO-FT ) (CFS ) 12' x 1 .8' CHANNEL STOR-IND METHOD 0.0 0.0 0.0 SIDE SLOPE= 2 '/' MAX. DEPTH- .90 FT .2 2.2 1 .4 n= .045 PEAK VELOCITY= 1 .8 FPS .4 4.4 4.3 LENGTH= 1200 FT CONTACT TIME = 683 SEC .5 6.6 8.4 SLOPE= .0037 FT/FT Qin = 20.4 CFS @ 12.58 HRS .8 9.6 15.2 Rout- 19.8 CFS @ 12.74 HRS 1 . 1 13.5 26. 1 ATTEN= 3 % LAG= 9.9 MIN 1 .4 18.3 41 .6 IN/OUT= 6.76 ! 6 .66 AF 1 .8 23.2 59.7 REACH 2 DISCHARGE MAIN STREAM THROUGH RIPARIAN PARK 1 . 8 1 .7 1 . 6 1 . 5 1 . 4 1 . 3 1 . 2 . 9 I- . 7 w `5 12' x 1 .8 ' CHANNEL SIDE SLOPE= 2 . 2 n=. OAS L-12OO' 5=.O037 . 1 0. 00 c� u� L� u, m to 0 DISCHARGE (cfs ) REACH 2 INFLOW & OUTFLOW MAIN STREAM THROUGH RIPARIAN PARK 20 16 ,' 12 ' x 1 .8 ' CHANNEL 16 f SIDE SLOPE= 2 t -. 045 L=1200' 5=. 0037 14 ; + 12 3 TOR-IND METHOD o VELOCITY= 1 . 6 FPS 10 C NTACT- 683 SEC g = 20. 4 CFS 4 Qout= LRG= 9. 9 MIN 2 ' 00 � Ln cn n co mcu t� TIME (hours ) Data for W.B.KENT&SONS-PRE-DEVELOPEO HYDROLOCY( 10YR) Page 12 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELO , MA. 31JAN90 HvdroCAQ Release 2.40 c ) 1986 1 90 Avlied Microcam uter Systarts REACH 2 MAIN STREAM THROUGH RIPARIAN PARK QUTFLOW PEAK= 19.8 CFS @ _12.7_4 HOURS HOUR 0.00 . 10 20 .30 .40 50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 11 .00 1 . 1 . i .2 .2 .2 .3 .3 .3 .3 .4 12.00 1 .7 1 .5 4.3 9.2 14.0 17.3 19. 1 19.7 19.7 19.2 13.00 1 18.6 18.0 17.5 17,0 16.6 16.2 15.9 15.7 15.5 1S.3 14.00 1 15.2 15.0 14.9 14.8 14.7 14.6 14.5 14.5 14.4 14.4 15.00 1 14.3 14.3 14.2 14.2 14.2 14. 1 14. 1 14. 1 14. 1 14.0 16.00 1 12.5 9.7 8.0 7.2 6.7 6.4 6. 1 5.9 5.8 5.7 17.00 1 5.6 5.5 5.4 5.4 5.3 5.2 5.2 5. 1 5. 1 5.0 18.00 1 5.0 4.9 4.9 4.8 4.8 4.7 4.7 4.8 4.6 4.6 19.00 1 4.5 4.5 4.4 4.4 4.3 4.3 4.2 4.2 4. 1 4. 1 20.00 1 4. 1 REACH 3 -> POND 2 X ,Y = 7.2 4.4 C1 1 > REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC) (CFS) 3 - 12.0 1 .8 2.00 2.00 .045 1500 .0037 2.7 651 73.5 REACH 3 MAIN STREAM BEHIND ELM SQUARE DEPTH END AREA DISCH (FT ) (S -FT ) (CFS ) 12' x 1 .8' CHANNEL STOR-IND METHOD 0.0 0.0 0.0 SIDE SLOPE= 2 '/' MAX, DEPTH- 2.07 FT .2 2.2 1 .4 n= .045 PEAK VELOCITY= 2.7 FPS .4 4.4 4.3 LENGTH= 1600 FT CONTACT TIME = 551 SEC .5 6.6 8.4 SLOPE= .0037 FT/FT Qin = 99.3 CFS L 11 .90 HRS ,B 9.6 15.2 Qout= 73.5 CFS @ 11 .99 HRS 1 . 1 13.5 26. 1 ATTEN= 26 % LAG= 5.2 MIN 1 .4 18.3 41 .6 IN/OUT= 11 .39 / 11 .22 AF 1 .8 23.2 59.7 Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 1@YR) Page 13 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroCAD Release 2.40 (c ) 1988 1990 Applied Microcomputer Systems REACH 3 DISCHARGE MRIN STREAM BEHIND ELM SQUARE 1 . 8 1 . 7 1 .6 1 . 5 1 . 4 1 3 ^ 1 .2 1 . 0 . 9 " S 12 ' x 1 .8' CHANNEL .4 SIDE SLOPE= 2 . 3 n=. 045 L=1500' S=. 0037 . 2 . 1 ®. @(5) u, 0 u i Q rn m tt7 0 u, m m m i cis m m v- v Ln m w DISCHARGE (cfs) RERCH 3 INFLOW & OUTFLOW MAIN STREAM BEHIND ELM SQUARE 95 12 ' x 1 .B ' CHANNEL SIDE SLOPE= 2 B n=.045 L=1500' S=. 0037 IF 6o f STOR-IND METHOD u 55 VELOCITY= 2 . 7 FPS 4 CONTACT= 551 SEC Qin= 99. 3 CFS 15 Qout= 73 . 5 CFS 5 LAG= 5 . 2 MIN 10 - cu TIME (hours ) Data for W.B.KENT&SONS-PRE-I)EVELOPED HYDROLOGY( 10YR) Page 14 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 d oCAD Re ease 2.40 (c ) 1986 , 1990 AUt3lied Microcomuter S stems REACH 3 MAIN STREAM BEHIND ELM SQUARE OUTFLOW P K= 73.5 CFS 11 .99 HOURS HOUR 0.00 . 1.0 0 .30 .40 .50 .60 .70 .80 .90 10.00 1 .2 .5 .8 1 . 1 1 .4 2.0 2 .4 2,8 3. 1 3.5 11 .00 1 3.8 4.2 4.8 5.4 6. 1 6 .9 9.8 17.9 34.2 61 .9 12.00 1 73.2 53.S 33. 1 25. 1 23.3 23.6 24.4 26.0 2S.3 25. 1 13.00 1 24.5 23.8 23.0 22.2 21 .5 20.8 20.3 19.8 19,3 18.9 14.00 1 18.6 18.2 18.0 17.8 17.6 17.4 17.3 17.2 17.0 16.9 15.00 1 16.8 16.7 16.6 16.S 16.4 16.3 16.2 16. 1 16. 1 16.0 16.00 1 15.5 14.3 12.7 11 .3 10.2 9.3 8.7 8.3 8.0 7.8 17.00 1 7.6 7.4 7.3 7. 1 7.0 6.9 6 .8 6.8 6.7 6.6 18.00 1 6.5 6.5 6.4 6.3 6 .3 6.2 6. 1 6. 1 6.0 5.9 19.00 1 5.9 5.8 5.7 5.7 6.6 5.5 5.5 5.4 5.3 5.3 20.00 1 S.2 REACH 4 X ,Y = 11 .7 4.4 C1 1} REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN) (FT) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC ) (CF ) 4 21 .0 - - - .015 82 .0050 4.6 18 10.4 REACH 4 CULVERT FROM KENT SITE UNDER 114(CENTER) DEPTH END AREA DISCH (FT ) (SQ-FT)- (CFS ) 21 " PIPE STOR--IND METHOD . 0.0 0.0 0.0 MAX. DEPTH= 1 .75 FT .2 . 1 .2 n= .015 PEAK VELOCITY- 4.6 FPS .4 .3 .9 LENGTH= 82 FT CONTACT TIME = 16 SEC .S .6 1 .9 SLOPE= .00S FT/FT Qin - 14.2 CFS @ 16. 11 HRS 1 .2 1 .8 8. 1 Qout= 10.4 CFS @ 11 .90 HRS 1 .4 2. 1 9.5 ATTEN= 27 % LAG= 0.0 MIN 1 .6 2.3 10.3 IN/OUT= 9.52 / 7.23 AF 1 .6 2.3 10.4 1 .7 2.4 10.3 1 .8 2.4 9.7 it Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( IOYR) Page 1S Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANOO Hydro CAD RgIQ.ase 2.40 (c ) 1985 1990 Applied Microcomputer Sy5tema REACH 4 DISCHARGE CULVERT FROM KENT SITE UNDER 114 (CENTER) 1 . 7 1 . 6 1 .5 1 .4 1 . 8 r. 1 . 2 +' 1 . 1 1 v . 0 A21 " PIPE . 4 n=. 015 L=82 ` S=. 005 . 3 . 2 1 0. 0m c4r r rr to cn r. an cn DISCHARGE (cfs ) REACH 4 INFLOW & OUTFLOW CULVERT FROM KENT SITE UNDER 114 (CENTER) 14 1 2 PE 12 n=.015 L=82' S=.0 . 11 10 ----------------STOR=INU-METHO7U 9 VELOCITY- 4 . 6 FPS 0 8 CONTACT= 18 SEC u 7 � 6 5 Oin= 14 . 2 CFS 4 Clout= 10. 4 CFS LAG= 0 MIN 2 1 0� -•- cv ra �r in cr3 rti m rn m ru TIME (hours) Data for W.S.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 16 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 droCAD Re age 0 (c ) 1986 1990 lied Microcomputer S 5tema REACH 4 CULVERT FROM RENT SITE UNDER 114(CENTER) O T LOW P AK= 10.4 CFS @ 1 . 0 HOURS HOUR 0.00 . 10 .20 30 40 .50 .60 .70 ._80_ .90 10.00 1 0.0 .3 .8 1 . 1 1 .4 1 .9 2.4 2 .7 3. 1 3.5 11 .00 1 3.9 4.2 4.8 5.5 6.2 7.0 9.3 9.7 9.7 10.4 12.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 13.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 14.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 15.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 16.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 17.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 18.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 19.00 1 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 9.7 20.00 1 9.7 REACH 5 -> REACH 2 X ,Y = 6 .2 2.3 <1 2> REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT } (FT/FT ) (FT) (FT/FT ) (FPS } (SEC ) (LS ) 5 24.0x2 - - - - .015 60 .0025 1 .8 34 1 . 1 REACH 5 CULVERTS UNDER ELM SQUARE DRIVEWAY DEPTH END AREA DISCH (FT ) (SQ-FTT _ (CFS � 24" PIPE X 2 STOR-IND METHOD 0.0 0.0 0.0 MAX . DEPTH= 0.00 FT .2 .3 ,4 n= .015 PEAK VELOCITY= 1 .8 FPS .4 .9 1 .7 LENGTH= 60 FT CONTACT TIME = 34 SEC .G 1 .6 3.8 SLOPE= .0025 FT/FT Qin = 1 . 1 CFS @ 13.91 HRS 1 .4 4.7 16.4 Qout- 1 . 1 CFS @ 13.91 HRS 1 .6 5.4 19.2 ATTEN= 0 % LAG= .5 MIN 1 .8 6 .0 20.9 IN/OUT= .71 / .7€ AF 1 .9 6. 1 21 . 1 1 .9 6.2 20.9 2 .0 6.3 19.G Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 17 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JANSO HydroCAp Release 2 40 (c ) 1986 1590 Applied Microcomputer Svstpms REACH 5 DISCHARGE CULVERTS UNDER ELM SQUARE DRIVEWRY 2 .0 1 . 8 1 .6 , 1 . 4 +1 1 . 2 1 . 0 .8 r ►� , g 24 " PIPE X 2 �a . 4 n=. 015 L=60' S=. 0025 .2 .� cu DISCHARGE (cfs ) REACH 5 INFLOW & OUTFLOW CULVERTS UNDER ELM SQUARE DRIVEWAY 1 . 1 1 . 0 2 PE X 2 . 5 n=.015 L-60' S=. 2 . 8 STOR-IND METHOD . 6 VELOCITY= 1 . 8 FPS u CONTACT= 34 SEC . 5 o . 4 Qin= 1 . 1 CFS .3 Qout= 1 . 1 CFS LRG- . 5 MIN . 2 . 1 0. 0 ry A v- to co m cu TIME (hours ) Data for W.B.KENT&SDNS-PRE--DEVELOP£D HYDROLOGY( 10YR) Page 18 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroCAO el ase 2.40 n 1986 , 1990 8pplied Mic ocom uter Systems REACH S CULVERTS UNDER ELM SQUARE DRIVEWAY OUTFLOW PEAK= 1 . 1 CFS @ _13.91 HOURS HOUR _ 0.00 . 10 .20 .30 40 ,50 .60 .70 _80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 . 1 . 1 2 11 .00 1 .3 .4 .4 .4 .4 .4 .4 .4 .4 .5 12,00 1 .S .7 .8 .9 1 .0 1 .0 1 .0 1 .0 1 . 1 1 . 1 14.00 1 1 . 1 1 . 1 15.00 1 1 . 1 I . 1 16.00 1 1 . 1 1 . 1 1 . 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 17,00 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 18,00 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 .9 19.00 I .9 .9 20.00 1 .9 REACH 6 -> X ,Y = 10.g 1 .6 <1 I> REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL, TIME Qout ( IN) (FT ) (FT ) (FT/FT ) _ (FT ) (FT/FT ) (FPS ) (SEC ) (CPS ) S 18.0 - - - - .015 94 .0100 5.8 1G 9. 1 REACH 6 CULVERT UNDER 114 FROM KENT(RT. SIDE) DEPTH ENO AREA DISCH (FT ) (S -FT ) (CFS ) 18" PIPE STOR-IND METHOD 0.0 0.0 0.0 MAX. DEPTH= 0.00 FT .2 . 1 PEAK VELOCITY= 5.8 FPS .3 .8 LENGTH= 94 FT CONTACT TIME = 16 SEC .4 .4 1 .8 SLOPE= .01 FT/FTQin = 19.0 CFS @ 12.05 HRS 1 . 1 1 .3 7.6 Qout= 9. 1 CFS @ 11 .90 HRS 1 .2 1 .5 8.9 ATTEN= 52 % LAG= 0.0 MIN 1 .4 1 .7 9.7 IN/OUT= 1 .27 / 1 .27 AF 1 .4 1 .7 9.8 1 .5 1 .8 9.7 1 .5 1 .8 9. 1 Data for W.R.KENT&SONS--PRE--DEVELOPE© HYDROLOGY( 10YR) Page 19 Prepared by THOMAS E. NEUE ASSOCIATES , INC. ,TOPSI=IELD , MA. 31J'ANSO droCAO Release 2.40 (c ) 1985 1990 A© lied Microcomputer Systems REACH 6 DISCHARGE CULVERT UNDER 114 FROM KENT(RT. SIDE) 1 . 5 1 .4 1 . 9 1 . 2 1 . 1 1 . 0 . 9 . 7 R .4 18" PIPE .9 n=.015 L=94 ' S=. 01 . 2 . 1 0` 0� cnmuimua u-, 0UrCDLnGj u, to co, �r in ir, cr, cn r` rti co o� r�r a7 DISCHARGE (cfs) REACH 6 INFLOW & OUTFLOW CULVERT UNDER 114 FROM KENT(RT. SIDE) 17 -18 . 181, PIPE 15Ln— =94 ' S=.01 14 1IND METHOD 11Y= 5 . 8 FPS U 1CT= 16 SEC ..Q = 19 . 0 CFS 5t= 9 . 1 CFS LnG= 0 MIN 32 1 0m ru m �n ca r. w to TIME (hours ) Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 10YR) Page 20 i Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELO , MA. 31JAN9O droC O Release 2.40 (c ) 19,86 . 1990 Applied Microcomputer S ste s REACH 8 CULVERT UNDER 114 FROM KENT(RT. SIDE) OUTFLOW PE K= 9. 1 CFS 211 .90 HQUBS HOUR 0.00 . 10 .20 .30 .40 .50 60 .70 .80 .90 _ 10.00 1 0.0 0.0 0.0 . 1 . 1 . 1 . 1 .2 .2 .2 11 .00 1 .3 .3 .4 .5 .6 .8 1 . 1 2. 1 4.7 9. 1 12 .00 1 9. 1 9. 1 9. 1 9. 1 9. 1 9. 1 9. 1 8.4 2.9 1 .6 13.00 1 2.4 1 .5 2.0 1 .4 1 .7 1 .3 1 .5 1 .2 1 ,3 3 . 1 14.00 1 1 .2 1 . 1 1 . 1 1 .0 1 .0 1 .0 1 .0 .9 .9 .9 16.00 1 .9 .9 .9 .8 8 .8 .8 .8 .7 .7 16.00 1 7 .7 .7 .7 .7 .6 .6 .6 .6 .6 17.00 1 .6 .6 .6 .6 .6 18.00 1 .5 .5 .5 .5 .5 .5 19,00 1 .5 .S .S .5 .4 .4 .4 .4 .4 .4 20.00 1 .4 Data for W.B.KENT&SONS--PRE-OEVELOPE❑ HY❑ROLOGY( 10YR) Page 21 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA, 31JAN90 HvdroCAD Release 2.40 (c ) 19$6 . 1990 Applied Microcomputer SvBtems POND 1 to 1 POND 1 -> REACH 5 X ,Y = 3.6 2.3 <1 2} POND ROUTING BY STOR-IN❑ METHOD POND OUTLET SPECIAL START FLOOD PEAK PEAK Qpeak. Qpeak Qpeak NO. DEVICES OUTLETS ELEV. ELEV. ELEV. STORAGE ATTEN. LAG OUT (ET ) (FT ) (FT ) (AF ) (% ? (MIN) (CFS ) 1 2 - 95.2 67.5 9S.7 ,84 94 108.8 1 . 1 POND 1 POND UPSTREAM OF ELM SQ. DRIVEWAY STARTING ELEV= 95.2 FT FLOOD ELEV 97.5 FT ELEVATION CUM.STOR STOR-IND METHOD . (FT ) (AF ) PEAK ELEVATION= 95.7 FT 95.2 0.00 PEAK STORAGE _ .84 AF 95.5 .04 Qin = 18.9 CFS @ 12.09 HRS 97.5 10.39 Qout= 1 . 1 CFS @ 13.91 HRS ATTEN= 94 % LAG- 108.8 MIN IN/OUT- 1 .35 / .71 AF INVERT (FT ) OUTLET DEV,ICES. 95.2 24" CULVERT n=.015 L=60' S=.001 '/' Ke=.5 Cc=.9 Cd=.6 95.3 24" CULVERT n=.015 L=60' S-.0055'/' Ke=.5 Cc--9 Cd=.6 TOTAL DISCHARGE vs ELEVATION FEET 0.0 . 1 .2 .3 .4 .5 .5 .7 .8 .9 95.2 1 0.0 0.0 . 1 .4 .8 1 .4 2. 1 2 .9 3.9 4.9 96.2 1 6. 1 7.4 8.8 10.2 11 .7 13.3 14.9 16 .5 18.2 19.8 97.2 1 21 .5 23. 1 24.6 26. 1 Data for W.R.KENT&SONS-PRE-DEVELOPED HYOROLOGY( IOYR) Page 22 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 1990 Applied Microcomputer Systems POND 1 DISCHARGE POND UPSTREAM OF ELM SO. DRIVEWAY flood elev. - - - - - - - - - - - - - - - 97 . 4 97 . 2 97 . 0 � 96 . 8 96 . 6 0 96 . 4 F 96. 2 96 .0 J 95 . 8 95 . 6 {{ L 95 . 4 95 . 2 0 cv �r m co to co cc .� ., cv cv cu DISCHARGE (cfs ) POND t INFLOW & OUTFLOW POND UPSTREAM OF ELM SO. DRIVEWAY 178 STOR-IND METHOD 16 PERK ELEV= 95 . 7 FT 15 - 14 PEAK STOR= . 84 RF 13 0 11 Oin= 18 .9 CFS c 10 Qout- 1 . 1 CFS LAG- 108 . 8 MIN 8 a 7 6 5 4 0m J ru m v M cn n co m m TIME (hours ) i iata for W.6.KENT&SONS-PRE-DEVELOPED HYOR01_OGY( 1@YR) Page 23 repared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 LydroCAQ Release 2. c ) 1986 , 1990 AppliedMi.croco ut stems 'OND 1 POND UPSTREAM OF ELM SQ. DRIVEWAY OUTFLOW PEAK= 1 . 1 CFS @ 13.91 HQQRS HOUR 0.00 . 10 0 .30 .40 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 . 1 . 1 .2 11 .00 1 .3 .4 .4 .4 .4 .4 .4 .4 .4 .5 12.00 1 .6 .7 .8 .9 1 .0 1 .0 1 .0 1 .0 1 . 1 1 . 1 13.00 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 14.00 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 15.00 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 19.00 1 1 . 1 1 . 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 17.00 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 18.00 1 1 .0 1 .0 1 .0 1 .0 1 .0 .9 .9 .9 .9 .9 16.00 1 .9 .9 .9 .9 20.00 1 .9 I i i }III i i Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 25 Prepared 6y THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 KydCoC8D Release 2.40 (c ) 1986 . 1990 Applied Microcomputer Systems SUBCATCHMENT 1 DRAINAGE AREA SW OF 114 RUNOFF PEAK= 71 .8 GF5 @ 12.67__HOUR_S HOUR 0.00 1 .20 .30 .40 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 . 1 .2 .3 .5 .7 1 . 1 1 .6 2.7 6.0 12.00 1 10. 1 18.6 30. 1 43.9 56.9 66.3 70.9 71 .7 68.9 63.8 13.00 1 56.9 49.8 43.8 38.8 34.6 31 .0 27.9 25.3 23.0 21 . 1 14.00 1 19.4 18.0 16.7 15.6 14.7 13.8 13. 1 12.4 11 .9 11 .4 15.00 1 10.9 10.6 10.2 9.9 9.6 9.3 9. 1 8.8 8.6 8.4 16.00 1 8.2 8. 1 7.9 7.7 7.5 7.3 7.2 7.0 6.9 6.8 17.00 1 5.6 6.5 6.5 6.4 6.3 6.2 6. 1 6. 1 6.0 5.9 18.00 I 5.8 5.8 5.7 5.6 5.6 5.5 5.4 5.4 5.3 5.2 19.00 1 5.2 5. 1 5.0 5.0 4.9 4.8 4.8 4.7 4.6 4.6 20.00 1 4.5 SUBCATCHMENT 3 -> POND I X ,Y = 2.6 3.7 <1 2> RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL- 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT ) (% ) (MIN ) --- GROUND COVERS (%CN) --- _CN C_ (CF5 ) 3 5.96 770 1 .3 21 43%93 30%93 27%55 - 83 -- 31 .2 SUBCATCHMENT 3 ELM SQUARE DRAINAGE PERCENT CN 43.00 93 SCS TR-20 METHOD 30.00 93 TYPE II 24-HOUR 27,00 55 RAINFALL= 7.0 IN 100.00 83 PEAK= 31 .2 CFS @ 12.09 HRS AREA= 5.96 AC Tc= 21 MIN VOLUME= 2.22 AF LENGTH= 770 FT SLOPE= 1 .3 % Data For W.B.XENT&SONS-POST-DEVELOPED HYDROL©GY( 10YR) Page 26 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD , MA. 31JAN90 H d oCAO Relea5e 2.40 (c ) 1986 , 19.90 Applied Microcomouter-5 ystems SUBCATCHMENT 3 RUNOFF ELM SOURRE DRAINAGE 30 28 AREA= 5 . 96 AC 26 Tc= 21 MIN 24 CN= 83 _ 22 20 18 SCS TR-20 METHOD � 18 16 TYPE II 24-HOUR 14 RAINFALL= 7 .0 IN p 12 10 PEAK- 31 . 2 CFS 8 12.09 HRS 6 VOLUME- 2 . 22 AF 4 2 0r - cv rn in W N ca .. CU TIME (hours ) SUBCATCHMENT 3 ELM SQUARE DRAINAGE RUNOFF PEAK= 31 .2 CFS C 12.09 HOURS HOUR 0.00 . 10 .20 .30 .40 50,. .60 .70 .80 .90 10.00 I� .7 .8 .8 .9 .9 1 .0 1 . 1 1 .2 1 .3 1 .4 11 .00 1 1 .5 1 .6 1 .8 2.0 2.3 2.6 3. 1 4.9 9.0 16.7 12.00 1 27.2 31 .2 24.6 16. 1 10.8 7.8 5.9 4.7 3.9 3.4 13.00 1 3.0 2.7 2 .5 2.4 2.2 2. 1 2.0 1 .9 1 .8 1 .7 14.00 1 1 .7 1 .6 1 .5 1 .5 1 .4 1 .4 1 .4 1 .3 1 .3 1 .3 15.00 1 1 .2 1 .2 1 .2 1 .2 1 . 1 1 . 1 1 . 1 1 . 1 1 .0 1 .0 16 .00 1 1 .0 .9 .9 .9 .9 .9 .9 .9 .9 .8 17.00 1 .8 .8 .8 .8 .8 .8 .8 .8 .8 .7 18.00 I .7 .7 .7 .7 .7 .7 .7 .7 .7 .6 19.00 1 .6 .6 .6 .6 .6 .6 .6 .6 .6 .6 20.00 1 .5 SUBCATCHMENT 6 -> REACH 2 X ,Y = 4.0 7.2 <1 2> RUNOFF BY SCS TR--20 METHOD: TYPE II 24-HOUR RRINFALL= 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE) F ) (/ ) (MIN) ---- 6ROUND COVERS (%CN ) - CN C (CFS ) 6 21 .63 1500 3.0 61 40755 40%30 20%98 - 54 - 23.4 Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 27 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 droCfl1] Relees 2.4 (c ) 19$ 990 Applied Microcomputer Systems SUBCATCHMENT 6 FLOW FROM RIPARIAN PARK INTO R-2 PERCENT CN 40.00 55 SCS TR-20 METHOD 40.00 30 TYPE II 24 -HOUR 20.00 +38 RAINFALL= 7.0 IN 100.00 54 PEAK- 23.4 CFS @ 12.51 HRS AREA= 21 .63 AC Tc= 51 MIN VOLUME= 3.22 AF LENGTH- 1600 FT SLOPE= 3.0 SUHCATCHMENT 6 RUNOFF FLOW FROM RIPARIAN PARK INTO R--2 22 20LR 1 .63 AC 51 MIN I$ 54 16 14 METHOD 12 �C4-HOUR }oRAINFALL- 7 . 0 IN 8 623. 4 CFS 2.51 HRS 43 . 22 AF 2 -- . �� .-• sv m yr to w N cc cn CD TIME (hours ) SUBCRTCHMENT 6 FLOW FROM RIPARIAN PARK INTO R-7 RUNOFE PEAK= 23.4 FS 12.5} HOURS HOUR 0.00 10 20 30 .40 .50 .60 .70 .80 ._90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 .2 .6 1 .7 12.00 1 4. 1 8.2 13.6 18.8 22.2 23.4 22.7 20.7 18.0 15.3 13.00 1 13.2 11 .4 10.0 8.9 7.9 7. 1 6.5 5.9 5.5 5. 1 14.00 1 4.7 4.5 4.2 4.0 3.8 3.6 3.4 3.3 3.2 3. 1 15.00 1 3.0 2.9 2.9 2.8 2.7 2.7 2.6 2.6 2.5 2 .5 16.00 1 2.4 2.4 2.3 2.2 2.2 2. 1 2. 1 2. 1 2.0 2.0 17.00 1 2.0 1 .9 1 .9 1 .9 1 .9 1 .9 1 .8 1 .8 1 .8 1 .8 18.00 1 1 .8 1 .7 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 1 .6 19.00 1 1 .6 1 .5 1 .5 1 .5 1 .5 I .S 1 .4 1 .4 1 .4 1 .4 20.00 1 1 .4 it Data for W.8.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 28 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD, MA. 31JAN90 droCAD Release 2.40 c ) 1986 1990 Applied Microcomputer ste s 11EAV1-1 1 to P '-�•===C=35CC===C�GAi C.F==CCC�=C�CCP.�G�==xCC.�..C.^..xC�--=-CCS.".C.^C=�=CC.S.^.CC= REACH 1 -? REACH 2 X ,Y = 3.9 6.3 C1 1> REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO, DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC) (CFS ) 1 21 .0 - - - - .015 78 .0073 5.5 14 11 .7 REACH 1 CULVERT UNDER 114 TO RIPARIAN PARK DEPTH END AREA DISCH (FT ) (SQ--FT ) (CFS ) 21 " PIPE STOR--IND METHOD 0.0 0.0 0.0 MAX. DEPTH= 1 .75 FT .2 . 1 .2 .015 PEAK VELOCITY= 5.5 FPS .4 .3 1 .0 LENGTH= 78 FT CONTACT TIME 14 SEC .5 .6 2.3 SLOPE= .0073 FT/FT Qin = 71 .8 CFS @ 12.67 HRS 1 .2 1 .8 9.9 Qout- 11 .7 CF6 @ 12. 10 HRS 1 .4 2. 1 11 .5 ATTEN= 84 % LAG- 0.0 MIN 1 .6 2.3 12.5 IN/OUT= 11 . 19 / 7.94 AF 1 .6 2.3 12.6 1 .7 2.4 12.5 1 .8 2.4 11 .7 REACH i DISCHARGE CULVERT UNDER 114 TO RIPARIAN) PARK 1 . 7 1 . 5 1 . 4 1 . 3 r, 1 . 2 1 . 1 1 .0 . 9 a. .6 w . 5 21 " PIPE Q .4 n=. D15 L=78 ' S-. 0073 . D . 2 . 1 0• Dm tv m d to co r� oo cn m �+ N DISCHARGE (cfs ) Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 29 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 . 1990 Applied Microcomputer SYetems REACH 1 INFLOW & OUTFLOW CULVERT UNDER 114 TO RIPRRIRN PARK 70 65 R1 " PIPE 60 n=.015 L¢78' S=. 0073 55 50 STOR--IND METHOD 45 VELOCITY= 5 .5 FPS u `}0 CONTACT= 14 SEC .. 35 30 Q1n= 71 . 8 CFS a 25 20 Qout= 11 . 7 CFS 15 LAG= 0 MIN - - r 5 00 (xirn �r to ca r� ao m m TIME (hOUru ) REACH 1 CULVERT UNDER 114 TO RIPARIAN PARK OUTFLOW PEAK= 11 .7 CF5 0 12. 10 HOURS HOUR 0.00 . 10 .20 .30 .40 s0 .60 .70 .80 _.90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 . 1 .2 .3 .a .7 1 . 1 1 .6 2.7 4.9 12 .00 1 9.B 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 13.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 14.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 155.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 16.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 17.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 18.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 19.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 20.00 1 11 .7 REACH T REACH 3 X ,Y 5.4 5.3 <,1 2} REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE. PEAK CONTACT PEAK NO, DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME gout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC ) (CFS ) 2 - 12.0 1 .8 2.00 2.00 .045 1200 .0037 2.2 553 36. 1 Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( IOYR). Page 30 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANSO HydroCAD Re ease 2 .40 c ) 1986 . 1990 Applied Micra om ut S stems REACH 2 STREAM THRU RIPARIAN PORK DEPTH END AREA DISCH (FT ) ( -FT ) (CFS ) 12' x 1 .8' CHANNEL STOR-INO METHOD 0.0 0.0 0.0 SIDE SLOPE= 2 '/' MAX. DEPTH= 1 .31 FT .2 2 .2 1 .4 n- .045 PEAK VELOCITY= 2.2 FPS .4 4.4 4.3 LENGTH= 1200 FT CONTACT TIME = 553 SEC .5 6 .6 8.4 SLOPE= .0037 FT/FT Qin = 37. 1 CFS @ 12.52 HRS .8 9.6 15.2 Qout= 36. 1 CFS @ 12.63 HR5 1 . 1 13.5 26 . 1 ATTEN= 3 % LAG= 6.9 MIN 1 .4 18.3 41 .6 IN/OUT= 12.49 / 12 .23 AF 1 .8 23.2 59.7 REACH 2 DISCHARGE STREAM THRU RIPARIAN PARK 1 . 6 ..-' 1 . 7 ,. 1 . 5 1 . 3 1 . 2 q- III . 9 h . 7 . 5 12 ' x 1 . 6 ' CHANNEL .4 SIDE SLOPE= 2 • 3 n=. 045 L=1200' S=. 0037 . 2 . 1 0'�0 lf7-on 0 to m n @ n m in ru w cr, m ;r t in to to DISCHARGE (Ofs) REACH 2 INFLOW & OUTFLOW STREAM THRU RIPRRIRN PARK 36 , 34 ,r �� 12 ' x 1 . 6 ' CHANNEL 32 ' SIDE SLOPE= 230 - 2E ', n=. 045 L=1200' S=. 0037 24 ; 22 �� STOR-IND METHOD o E 4 VELOCITY= 2 .2 FPS 16 16 T= 553 SEC 14 10 i G�i n= 37. 1 CFS g t Qout= 36 . 1 CFS 6 LAG= 6. 9 MIN 4 2 ` Oir to Ncu m m TIME (hours ) Data for W.O.KENTBSQNS-POST-DEVELOPED HYDROLOGY( 10YR) Page 31 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 , 1990 Applied-Microcomputer Sy5tem5 REACH 2 STREAM THRU RIPARIAN PARK OUTFLOW PEAK= 36. 1 CFS @ 12.63 HOURS HOUR 0.00 . 10 .20 .30 0 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 . 1 . 1 .2 .2 .3 .4 11 .00 1 .4 .4 .5 .6 .6 .8 .9 1 . 1 1 .6 3.0 12 ,00 1 6. 1 11 .8 18.5 25.0 30.8 34.5 36.0 35.7 34.0 31 .7 13.00 1 29.3 27.3 25.6 24.3 23. 1 22. 1 21 .3 20.6 20.0 19.5 14.00 1 19. 1 18.7 18.4 18. 1 17.9 17.7 17.5 17.3 17.2 17.0 15.00 1 16. 9 16.8 16.7 16.7 16.6 16 .5 16.4 16.4 16.3 16.2 16.00 1 16.2 16. 1 16.0 16.0 15.5 15.8 15.8 15.7 15.7 15.6 17.00 1 15.6 15.5 15.5 16.5 15.4 15.4 15.4 15.3 15.3 15.3 18.00 1 16.2 15.2 1S.2 15.2 15. 1 15. 1 15. 1 15.0 15.0 15.0 19.00 1 15.0 14.9 14.9 14.9 14.8 14.8 14.8 14.7 14.7 14.7 20.00 1 14.6 REACH 3 -> POND 2 X ,Y = 7.2 5.3 <1 1 > REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME QOut ( IN) _(FT (FT ) (FT/FT) (FT ) (F FT ) (FPS ) _ (5EC) (CFS ) 3 - 12.0 1 .8 2.00 2.00 .045 1500 .0037 3.0 494 120. 1 REACH 3 STREAM BEHIND ELM SQ. THRU KENT SITE DEPTH END AREA DISCH (FT ) (S - T ) (CFS ) 12' x 1 .8' CHANNEL. STOR-IND METHOD 0.0 0.0 0.0 SIDE SLOPE- 2 '/" MAX. DEPTH= 3.00 FT .2 2.2 1 .4 n= .045 PEAK VELOCITY= 3.0 FPS .4 4.4 4.3 LENGTH= 1600 FT CONTACT TIME - 494 SEC .5 6.6 8.4 SLOPE= .0037 FT/FT Qin = 153.9 CFS @ 11 .91 HRS .6 9.6 15.2 Qout= 120. 1 CFS @ 12.00 HRS 1 . 1 13.5 26. 1 ATTEN= 22 % LAG= 5.3 MIN 1 .4 18.3 41 .6 IN/OUT= 19.85 / 19.SO AF 1 .8 23.2 59.7 Data for W.B.KENT&SONS-POST-DEVELOPED HYDR0LOGY( 1@YR) Page 32 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 droCAD Release 2.40 (c ) 1986 l9j%__ftpplied N.icrgcomouter S ste a REACH 3 DISCHARGE STREAM BEHIND ELM SO. THRU KENT SITE I . O 1 .7 1 .5 1 . 4 1 . 3 ., 1 . 2 1 . 0 . 9 CL . 7 � . G 12 ' x 1 .8 ' CHANNEL ;4 SIDE SLOPE= 2 . 2 n-.045 L-150O�' S-.0037 . 1 . G L-A m in U tv cv m m 'r u k u-) to DISCHARGE (cfs ) REACH 3 INFLOW & OUTFLOW STREAM BEHIND ELM SO. THRU KENT SITE 150 140 12 ' x 1 .8 ' CHANNEL 130 SIDE SLOPE= 2 '/' 120 n-. 045 L=1500' 5=. 0037 110 100 1 90 STOR-IND METHOD U e0 VELOCITY= 3 FPS 70 CONTACT= 494 SEC O G0 ' 50 Oin= 153 . 9 CFS L 40 '` Qout= 120. 1 CFS 30 G- . 3 MIN 20 , 10 r' TIME (hours) i Data for W.6.KENTKSONS-POST-DEVELOPED HYQROLOGY( 10YR) Page 33 Prepared 6y THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroQAD R lease 2.40 c 1986 990 Applied Microcomputer Systems REACH 3 STREAM BEHIND ELM SO. THRU KENT SITE OUTFLOW PEAK--- 120. 1 CFS 12, 0 HOURS HOUR .0 . 10 .2 .30 .40 SO .G0 0 80 .90 10.00 1 .3 .9 1 .6 2.6 3.4 4,0 4.7 5.4 6. 1 6.7 11 .00 1 7.2 7.9 8.7 9.7 10.8 12.2 16.7 29.9 5G.0 97.3 12.00 1 120. 1 96.8 64.8 50.4 46.5 46.2 4E.4 46.0 44.8 42.8 13.00 1 40.3 37.7 35.3 33.2 31 .4 29.8 2B.5 27.3 26.3 25,5 14.00 1 24.7 24. 1 23.5 23.0 22.6 22.3 21 .9 21 .6 21 .4 21 . 1 16.00 1 20.9 20.7 20.5 20.3 20. 1 20.0 19.8 19.7 19.5 19.4 16.00 1 19.2 19. 1 18.9 18.8 18.7 18.6 18.5 18.4 18.3 18.3 17.00 1 18.2 18. 1 18.0 18.0 17.9 17.B 17.8 17.7 17.6 17.6 18.00 1 17.5 17.4 17.4 17.3 17.3 17.2 17.2 17. 1 17.0 17.0 19.00 1 16.9 16.9 16.8 16.7 16.7 16.6 16.G 16.5 16.4 16.4 20.00 1 16 .3 REACH 4 x ,Y = 11 .0 5.3 C1 17 REACH ROUTING BY STAR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) 5EC (CFS ) 4 21 .0 - - - - .015 82 .0048 4.5 18 9.5 REACH 4 CULVERT X-ING 114 IN CENTER OF KENT SITE DEPTH END AREA DISCH -(FT ) (S -FT ) ( S ) 21 PIPE. STOR-IND METHOD 0.0 0.0 0.0 MAX. DEPTH= 1 .7S FT .2 . 1 .2 n- .015 PEAK VELOCITY= 4.5 FPS .4 .3 .8 LENGTH= 82 FT CONTACT TIME = 18 SEC .5 .6 1 .9 SLOPE= .0048 FT/FT Qin = 19.3 CFS @ 16. 14 HRS 1 .2 1 .8 8.0 Qout= 9.5 CFS @ 12 .00 HRS 1 .4 2 . 1 9.3 ATTEN= 51 % LAG= 0.0 MIN 1 .6 2 .3 10. 1 IN/OUT= 12.54 / 6.60 AF 1 .6 2 .3 10.2 1 .7 2.4 10. 1 1 .8 2.4 9.5 Data for W.B.KENTIISONS-POST-DEVELOPED HYDROLOGY( IOYR) Page 34 Prepared by THOMAS E. NEUE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANBO H.vdroCAD Rele se 2. (c ) 1986 , 1990 .ftglied Micros m uter S ste s REACH 4 DISCHARGE CULVERT X-ING 114 IN CENTER OF KENT SITE 1 .7 1 .6 1 . 1 . 3 1 . 2 � 1 : 1 � 1 .0 z . 13 . 7 IL . 6 , 5 21 " PIPE . 4 n=. 015 L=82 ' S=.0046 . 3 . 2 . 1 0�1 C,1 fi7 I- Li) (D t� 0) m � DISCHRRGE (cfs) REACH 4 INFLOW & OUTFLOW CULVERT X-ING 114 IN CENTER OF KENT SITE 17 '2 0= 1SOL=82NS5 PIPE 1 I =. 0048 14 STOR-I METHOD ITYVELC = FPS 1 ----------------C.0AT.RCT__IB--SE C o Gin- 19. 3 CFS -1 6 Gout= 9. 5 CFS LAG= 0 MIN 1 0C J cu m I r- u i CD cn � TIME (hours ) Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 35 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JANSO dr CAD Relea5p 2,40 (c ) 1986 i990 Applied Microcomputer Systems REACH 4 CULVERT X-ING 114 IN CENTER OF KENT SITE OUTFLOW PEAK= 9.5 C S @ 12.00 HOURS HOUR oleo . l0 0 ...30 0 .50 .60 .70 80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 . 1 .2 .3 11 .00 1 .4 .6 .8 1 . 1 1 .4 1 .8 2.4 3.4 5.7 9.2 12.00 1 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 13.00 1 9.5 9.9 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 14.00 1 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 15.00 1 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 16.00 I 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 17.00 1 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 18.00 1 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 19.00 f 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 20.00 f 9.5 REACH 5 -> REACH 2 X ,Y = 5.5 3.7 <1 2> REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC ) (CFS_) 5 24.@x2 - - - .015 60 .0035 2.3 26 2.2 REACH 5 TWIN CULVERTS UNDER ELM SQ. DRIVE DEPTH END AREA DISCH (FT ) (S -FT ) (CF 1 24" PIPE X 2 STOR-IND METHOD 0.0 0.0 0.0 MAX. DEPTH- .41 FT .2 .3 .s n= .015 PEAK VELOCITY- 2.3 FPS .4 .9 2.0 LENGTH= 60 FT CONTACT TIME = 26 SEC .6 1 .6 4.5 SLOPE= .0035 FT/FT Qin = 2.2 CFS @ 13.46 HRS 1 .4 4.7 19.4 Qout= 2.2 CFS @ 13.48 HRS 1 .6 5.4 22.7 ATTEN= 0 % LAG- 1 . 1 MIN 1 .8 6.0 24.7 IN/OUT= 1 .34 / 1 .34 AF 1 .9 6. 1 25.0 1 .9 6.2 24.7 2.0 6.3 23.2 Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 1OYR) Page 36 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 dr CAD Rel age 2.40 (c ) 1986 , 1990 Applied icrocom liter Systems REACH 5 DISCHARGE TWIN CULVERTS UNDER ELM SO. DRIVE 2 .0 1 . 6 ! . 6 1 . 4 1 .2 1 . 13 A . 6 24 " PIPE X 2 4 n=.015 L=60' S=, C035 . 2 .0� d W Co t5r N t- W Co N V- .. €v cv to DISCHARGE (cfs ) REACH 5 INFLOW &. OUTFLOW TH114 CULVERTS UNDER ELM SO. DRIVE 2 .0 24 " PIPE X 2 1 .8 n=. 015 L= S—. 0035 1 .6 �, �, 1 .4 STOR-IND METHOD ! .2 VELOCITY= 2 . 3 FPS CONTACT= 26 SEC © , g Qin= 2 . 2 CFS .6 Qout= 2 . 2 CFS . 4 LRG= 1 . 1 MIN . 2 -r . 01 it m v to to r� oo to l4 TIME (hours ) Data for W.B.KENTI�SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 37 Prepared 5y THOMAS E. NEVE ASSOCIATES, INC. ,TOPSIIELD, MA. 31JAN90 dr CAD Rel as 2.40 (c ) 198 1990 Applied M c acorn uter S stems REACH 5 TWIN CULVERTS UNDER ELM SQ. DRIVE 0 TFLOW PEAK= 2.2 CFS-@ 13._48 HOURS HOUR 0.00 . 10 A 20 0 .40 0 .GO .70 .80 .90 10.00 1 0.0 0.0 . 1 .2 .2 .4 .5 •6 .6 .6 11 .00 1 .6 .6 .6 .6 .7 .7 .7 .7 .B .9 12.00 1 1 .0 1 .3 1 .5 1 .7 1 .9 2.0 2. 1 2. 1 2. 1 2. 1 13.00 1 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2,2 14.00 1 2.2 2. 1 2. 1 2. 1 2. 1 2. 1 2. 1 2. 1 2. 1 2. 1 15.00 1 2. 1 2. 1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 16.00 1 2.0 1 .9 1 .9 1 .9 1 .9 1 .9 1 .9 1 .9 1 .9 1 .8 17.00 1 1 .8 1 .8 1 .8 1 .8 1 .8 1 .8 1 .8 1 .7 1 .7 1 .7 18.00 1 1 .7 1 .7 1 .7 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 19.00 1 1 .6 1 .6 1 .6 1 .6 1 .6 1 .6 1 .6 1 .5 1 .5 1 .5 20.00 1 1 .5 REACH 6 -> X ,Y = 11 . 1 1 .7 <1 2) REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN ) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC ) _ CFS ) 6 18.0 - - - - .015 94 .0100 5. 1 19 3,7 REACH 6 CULVERT X-ING EASTERLY END OF KENT SITE DEPTH END AREA DISCH (FT ) (SQ-FT_). (CFS ) 18" PIPE STOR-IND METHOD 0.0 0.0 0.0 MAX. DEPTH= .65 FT .2 . 1 .2 n= .015 PEAK VELOCITY- 5. 1 FPS .3 .3 .8 LENGTH= 94 FT CONTACT TIME 19 SEC .4 .4 1 .8 SLOPE= .01 FT/FT Qin = 3.7 CFS @ 13.25 HRS 1 . 1 1 .3 7.6 Qout= 3.7 CFS @ 13.27 HRS 1 .2 1 .5 8.9 ATTEN= 0 % LAG= 1 .0 MIN 1 .4 1 .7 9.7 IN/OUT- 1 .60 / 1 .59 AF 1 .4 1 .7 9.8 1 .5 1 .8 9.7 1 .5 1 .8 9, 1 Data for W.O.KENT&SONS-POST-DEVELOPED HYDR0L.0GY( 10YR) Page 38 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 C4roCAp R2 leas 2.40 (c ) 1985 990 Applied Micro am uter S at ms REACH 6 DISCHARGE CULVERT X--ING ERSTERLY END OF KENT SITE 1 . 4 1 , 3 1 .2 1 . 1 1 .0 �5 18" PIPE 4 . n=.015 L=94 ' 5=.01 . 2 . 1 0. 0mLnalinm €n ® 0m0 �nmu, m �nt9u min rs . ctcu �-, mv rLnmLowr.. r- ooaxmcn DISCHARGE (cf s ) REACH 6 INFLOW & OUTFLON CULVERT X-ING EASTERLY END OF KENT SITE 3 . 6 18" PIPE 3 . 0 L L=94 ' 5=.01 2 . 8 • 2 • 6R�-IND METHOD 2 . 4 . � TY� 5. 1 FPS 1 . 8 = 19 SEC 1 . 6 _j 1 .2gout= 3 . 7 CFS 0LAG= 1 MIN 4. .2 0. 0s m w In (b m cu TIME (hours ) Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( IOYR) Page 39 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31.)AN90 droCAD Release .40 (c ) 9$ 990 ApplIed Hicrocomouter Systems REACH 6 CULVERT X-ING EASTERLY END OF RENT SITE OUTFLOW PEAK- 3.7 C S @ 13,27 HOURS HOUR 0.00 . 10 .20 .30 .40 .50 .60 ---,0 _ _.80 , .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 . 1 . 1 12.00 1 .3 .5 .9 1 .5 2. 1 2.6 3.0 3.3 3.4 3.6 13.00 1 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.6 3.6 3.6 14.00 1 3.5 3.4 3.4 3.3 3.3 3.2 3.2 3. 1 3. 1 3.0 15.00 1 3.0 2.9 2.8 2.8 2.8 2 .7 2.7 2.6 2.6 2.5 16.00 2.5 2.4 2.4 2.4 2.3 2.3 2.2 2.2 2.2 2. 1 17.00 1 2. 1 2. 1 2.0 2.0 2.0 1 . 0 1 .9 1 .9 1 .8 1 .8 18.00 1 1 .8 1 .8 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 1 .6 19.00 1 1 .5 1 .5 1 .5 1 .5 1 .5 1 .4 1 .4 1 .4 1 .4 1 .4 20.00 1 1 .3 Data for W.S.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 40 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD , MA. 31JAN90 droC D Release 2.40 (c ) 1986 , 1980 Applied Microcomputec S sta s POND I to 2 G= POND 1 -7 REACH 5 X ,Y = 4.0 3.7 <1 2? POND ROUTING BY STOR-IND METHOD POND OUTLET SPECIAL START FLOOD PEAK PEAK Qpeak Qpeak Qpeak NO. DEVICES OUTLETS ELEV. ELEV. ELEV. STORAGE ATTEN. LAG OUT (FT ) (FT ) (FT ) F ) {%) (MIN ) (CFS ) 1 2 95.2 97.5 95.8 1 .36 93 82.2 2,2 POND 1 WESTERLY OF ELM SQ. DRIVE STARTING ELEV= 95.2 FT FLOOD ELEV= 97.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT ) (AF ) PEAT( ELEVATION= 95.8 FT- 95.2 0.00 PEAK STORAGE = 1 .36 AF 95.5 .04 Qin = 31 .2 CFS @ 12.09 HRS 97.5 10,3E Qout= 2.2 CFS @ 13.46 HRS ATTENR 93 % LAG= 82.2 MIN IN/OUT= 2 .22 / 1 .34 AF INVE T (FT ) OUTLET DEVICES 95.2 x4" CULVERT n=.015 L=60' S=.0011/' Ke=.5 Cc=.9 Cd=.G 95.2 24" CULVERT n-.015 L=60' S-.0055' /' Ke-.5 Cc=.9 Cd=.6 TOTAL DISCHARGE ys ELEVATION FEET 0.0 . 1 .2 .3 .4 .5 I6 .7 .8 .9 95.2 1 0.0 . f .3 .6 1 . 1 1 .7 2.5 3.4 4.4 5.6 96.2 1 6.8 8. 1 9.5 11 .0 12.6 14. 1 15.8 17.4 19. 1 20.7 97.2 1 22.3 23,9 25.4 26.8 Data for W.8-KENT&SONS-POST-DEVELOPED HYDROLOGY( MR) Page 41 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA, 31JANSO F1 droCAD Release 2.40 (c ) 1986 1990 hi3plied Mic[:oqomciuter Systems POND 1 DISCHARGE WESTERLY OF ELM SO. DRIVE flood e l e v.- - - - - - - - - - - - - - - 97 .4 97 .2 97 . D 96 .8 36. E 0 9G . 4 96 . 2 9E . 0 J 95 . 8 95 .6 35 . 9 24 " CULVER & 24 " ULVE T 95 . 20 ru d, (0 c0 rU a w 00 DISCHARGE (cfs ) POND 1 INFLOW & OUTFLOW WESTERLY OF ELM SQ. DRIVE 30 28 STOR--IND METHOD 26 PEAK ELEV= 95 .8 FT 24 PEAK STOR= 1 . 36 AF ,- 22 18 Qin= 31 . 2 CFS 16 Qout= 2. 2 CFS 14 LAG= 82. 2 MIN O lc 10 8 6 4 2 ------- ------------ 0 It In to N 00 m m TIME Chours7 Data for W.B.KENT&SONS-POST-DEVELOPED HYDROLOGY( 10YR) Page 42 Prepared 6y THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANBO dr CAD Release 2.40 c ) 1986 990 01212lied Microcomputer S at ms POND 1 WESTERLY OF ELM SQ. DRIVE OUTFLOW PEAK= 2.2 CFS @ 13.46 HOURS HOUR 0.00 Jo .2 .30 .40 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 . 1 .2 .3 .4 .5 .6 .6 .6 11 .00 € .6 .6 .6 .6 .7 .7 .7 .7 .8 .9 12.00 1 1 .0 1 .3 1 .6 1 .8 1 .9 2.0 2. 1 2. 1 2. 1 2. 1 13.00 1 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 14.00 1 2.2 2. 1 2. 1 2. 1 2 . 1 2. 1 2. 1 2. 1 2. 1 2. 1 15.00 1 2. 1 2. 1 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 16.00 1 2.0 1 .9 1 .9 1 . 9 1 .9 1 .9 1 . 9 1 . 9 1 .9 1 .8 17.00 1 1 .8 1 .8 1 .8 1 .8 1 .8 1 .8 1 .8 1 .7 1 .7 1 .7 18.00 1 1 .7 1 .7 1 .7 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 19,00 1 1 .6 1 .6 1 .6 1 .6 1 .6 1 .6 1 .6 1 .5 1 .5 1 .5 20.00 1 1 .5 POND 2 -? REACH 4 X ,Y = 9.0 5.3 <1 15 POND ROUTING BY STOR-IND METHOD POND OUTLET SPECIAL START FLOOD PEAK PEAK Qpeak Qpeak Qpeak NO. DEVICES OUTLETS ELEV. ELEV. ELEV. STORAGE ATTEN. LAC OUT (FT ) (FT ) AFT ) (AF ) (Y ) (MIN) (CFS ) 2 1 - 90.2 94.0 94.6 8. 10 85 248.8 19.3 POND 2 WESTERLY OF KENT DRIVEWAY STARTING ELEV- 90.2 FT FLOOD ELEV= 94.0 FT ELEVATION CUM.STOR STOR-IND METHOD (FT ) (AF ) PEAK ELEVATION= 94.6 FT 90.2 0.00 PEAK STORAGE = 8. 10 AF 92.0 1 .83 Qin - 132.9 CFS @ 11 .99 HRS 94.0 6.61 bout= 19.3 CFS @ 16. 14 HRS ATTEN= 85 `/. LAG= 248.8 MIN IN/OUT= 20.21 / 12.54 AF INVERT (FT ) OUTLET DEVICES 90.2 21" CULVERT n=.015 L=82 ' S=.0048'/ ' Ke=.S Cc=.9 Cd=.6 T L DISCHARGE vei- ELEVATION FEET 0.0 1 .2 .3 .4 .5 .6 .7 .8 _ .9 90.2 1 0.0 0.0 . 1 .3 .6 .9 1 .3 1 .8 2.3 2.9 91 .2 1 3.5 4. 1 4.8 5.4 6. 1 6.8 7.5 B.2 8.9 9.5 92.2 1 10.0 10.5 10. 9 11 .0 11 .2 11 .7 12.2 12.7 13. 1 13.6 93.2 1 14.0 14.4 14.9 15.3 15.6 16.0 16.4 16 .7 17. 1 Data for W.B.KENT&SONS-POST--OEVELOPED HYDROLOGY( 10YR) Page 43 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 droCAD Release 2.40 (c ) 1996 1990 Anglied Microcompwter 5. y5t s i POND 2 DISCHARGE WESTERLY OF KENT DRIVEWAY 94 . 0 -f-laod elev. _ _ - - - - - - - - , 93. 4 932 g93 .. 0 82 . 6 z 2 . 2 F 1 . 6 (E 91 . 6 91 . 4 --� 9 1 ggo. 8 90.4 1 " qU V RT 90 2 't u7 W N rn rn try r. DISCHARGE (cfs ) POND 2 INFLOW & OUTFLOW WESTERLY OF KENT DRIVEWAY 130 120 STOR-IND METHOD 110 PERK ELEV= 94 .6 FT too - PERK STOR- 9 . 10 RF f, 9 ee Oin= 132 . 9 CFS 7 Qout= 19. 3 CFS 6C LAG= 246. 9 MIN o S0 40 30 20 - ---_` �----- - 10 0 `f TIME (hours ) Data for W.B.KENT&SONS-POST-❑EVELOPED HY❑ROLOGY( 10YR) Page 44 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HvdroCAD Release 2.40 (c ) 1986 . 1990 Applied Microcomputer Systems POND 2 WESTERLY OF KENT DRIVEWAY OUTFLOW PEAK- 19.3 GF5 @ 16. 14 HOURS HOUR 0.00 . 10 .20 30 40 .50 ,60 .70 .80 _ .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 . 1 .2 .3 11 .00 1 .4 .6 .8 1 . 1 1 .4 1 .8 2.4 3.6 5.8 9.4 12.00 1 11 .0 12.3 13.5 14.2 14.7 19.2 15.6 16.0 16.4 16.8 13.00 1 17. 1 17.3 17.6 17.8 18.0 18. 1 18.3 18.4 18.5 18.6 14.00 1 18.7 18.8 18.8 18.9 19.0 19.0 19.0 19. 1 19. 1 19. 1 15.00 1 19.2 19.2 19.2 19.2 19.3 19.3 19.3 19.3 19.3 19.3 16.00 1 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 17.00 1 19.3 19.3 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19. 1 18.00 1 19. 1 19. 1 19. 1 19. 1 19. 1 19.0 19.0 19.0 19.0 19.0 19.00 1 18.9 19.9 18. 9 18.9 18.8 18.8 18.8 18.8 18.7 18.7 20.00 1 18.7 I Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 100YR) Page 45 Prepared by THOMAS E, NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 HVdroCAU Release 2.40 (c ) 1986 . 1990 Applied Microcomputer 5y5tems _ 1 SUBCATCHMENT 1 to 12 SUBCATCHMENT 1 -> REACH 1 X ,Y 1 .0 4.4 {1 2> RUNOFF BY SCS TR-20 METHOD. TYPE IT 24-HOUR RAINFALL- 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT ) m (MIN ) --- GROUND COVERS _ ( %CN ) --- CN C (CFS ) 1 63. 18 2010 2 .5 64 5%30 83%55 12%93 - 58 - 71 .8 SUBCATCHMENT 1 DRAINAGE AREA SW OF RT. 114 PERCENT ON 5.00 30 SCS TR-20 METHOD 83.00 55 TYPE II 24-HOUR 12 .00 93 RAINFALL= 7.0 IN 100.00 58 PEAK= 71 .8 CFS @ 12.G7 HRS AREA= 63. 18 AC Tc= 64 MIN VOLUME= 11 . 19 AF LENGTH= 2010 FT SLOPE= 2.5 % SUBCATCHMENT 1 RUNOFF DRAINAGE AREA SW OF RT. 114 65 AREA= 63. 18 RC G0 Tc= 64 MIN 55 CN= 58 50 m 45 SCS TR-20 METHOD 40 TYPE II 24-HOUR .. 35 RRINFRLL= 7 .0 IN x 313 0 25 PEAK= 71 . 8 CF5 ��' 20 @ 12 . 67 HRS 15 10 OLUME= 11 . 19 RF 5 TIME (hours ) Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 100YR) Page 46 Prepared 6y THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD , MA. 31J'AN90 H droCAD Rel aae 2.40, e ) 1986 . 1990 Applied Microgomouter S stgm5 SUBCATCHMENT 1 DRAINAGE AREA SW OF RT. 114 RUNOFF PEAK= 71 ,8 CFS @ 12.67 HOURS HOUR 0.00 . 10 .20 .30 40 .50 .60 .70 .80 .9 10.00 I 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 . 1 .2 .3 .5 .7 1 . 1 1 .6 2.7 5.0 12.00 1 10. 1 18.5 30. 1 43.9 56.9 66.3 70.9 71 .7 68.9 63.8 13.00 1 56.9 49.8 43.8 38.8 34.6 31 .0 27.9 25.3 23.0 21 . 1 14.00 1 19.4 18.0 16.7 15.6 14.7 13.8 13. 1 12 .4 11 .9 11 .4 15,00 1 10.9 10.6 10.2 9.9 9.6 9.3 9. 1 8.8 8.6 8.4 16.00 1 8.2 8. 1 7.9 7.7 7.5 7.3 7.2 7.0 6.9 6.8 17.00 1 6.6 6.5 6.6 6.4 6.3 6.2 6. 1 6. 1 6.0 5.9 18.00 1 5.6 5.8 5.7 5.6 5.6 5.5 5.4 5.4 5.3 5.2 19.00 1 5.2 5. 1 5.0 5.0 4,9 4.8 4.8 4.7 4.6 4.6 20.00 1 4.5 SUBCATCHMENT 2 -7 REACH 2 X ,Y 4.ra 6.7 C1 2} RUNOFF BY SCS TR-20 METHOD. TYPE II 24-HOUR RAINFALL- 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT) (% ) (MIN ) --- GROUND COVERS (%CN ) - - CN _ C_-- (CFS_) 2 21 .63 1500 3.0 51 40%55 40%30 20%98 - 54 - 23.4 SUBCATCHMENT 2 RIPARIAN PARK FLOW PERCENT CN 40.00 55 SCS TR-20 METHOD 40.00 30 TYPE 11 24-HOUR 20.00 98 RAINFALLS 7.0 IN 100.00 54 PEAK= 23.4 CFS @ 12.51 HRS AREA= 21 .63 AC Tc= 51 MIN VOLUME- 3.22 AF LENGTH= 1500 FT SLOPE= 3.0 % Data for W-B.KENT&SONS-PRE--DEVELOPED HYDROLOGY( 100YR) Pages 47 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 Hydro CAD Release 2.40 Sc 1986 1990 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF RIPARIAN PARK FLOW 20Lll.RE1 .63 AC S1 MIN 18 = 54 ., 16 140 METHOD 12224-WOUI� 10 - 7. 0 IN 23 . 4 CFS 62.51 HRS 43 . 22 RF 2 �- -�--� Om ni m tr to co N co m m TIME (hours- ) SUBCATCHMENT 2 RIPARIAN PARK FLOW RUNOFF PEAK- 23.4 CFS @ 12.51HOIRS HOUR 0.00 . 10 .20 30 .40 .50 .60 _.70 ._80 .90 10.00 1� 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 0.0 0.0 0.0 0.0 0.0 . 1 .2 .6 1 .7 12.00 1 4. 1 8.2 13.6 18.8 22.2 23.4 22 .7 20.7 18.0 19.3 13.00 1 13.2 11 .4 10.0 8.9 7.9 7. 1 6.5 5.9 5.5 5. 1 14.00 1 4.7 4.5 4.2 4.0 3.8 3.6 3.4 3.3 3.2 3. 1 15.00 1 3.0 2.9 2.9 2.8 2.7 2.7 2 .6 2.6 2.5 2.5 16 .00 1 2.4 2.4 2 .3 2.2 2.2 2. 1 2. 1 2. 1 2.0 2.0 17.00 1 2 .0 1 .9 1 .9 1 .9 1 .9 1 .9 1 .8 1 .8 1 .8 1 .8 18.00 1 1 .8 1 .7 1 .7 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 1 .6 19.00 1 1 .6 1 .5 1 .5 1 .5 1 .5 1 .5 1 .4 1 .4 1 .4 1 .4 20.00 1 1 .4 SUBCATCHMENT 3 -> PONES I X ,Y - 1 .0 2.3 C 1 2) RUNOFF BY SCS TR-ZO METHOD: TYPE II 24-HOUR RAINFALL= 7.0 IN SUSCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE) (FT ) (% ) ( IN ) ---- G OU D COVERS (%CN ) --- CN C ( F5 ) 3 5.96 770 1 .3 21 43%93 30%93 27%55 - 83 - 31 .2 Data for W.B.KENT&SON5-PRE-DEVELOPED HYDROLOGY( 100YR) Page 48 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD , MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 1990 Applied Microcomputer Systems SUBCATCHMENT 3 FLOW FROM ELM SQUARE PROJECT PERCENT CN _ - 43.00 93 SCS TR-20 METHOD 30,00 93 TYPE II 24-HOUR 27.00 RAINFALL= 7.0 IN 100.00 83 PEAK= 31 .2 CFS @ 12.09 HRS AREA= 5.96 AC Tc= 21 MIN VOLUME= 2.22 AF LENGTH= 770 FT SLOPE= 1 .3 6 SUBCRTCHMENT 3 RUNOFF FLAN FROM ELM SQUARE PROJECT 30 26 AREA= 5 .96 AC 26 Tc= 21 MIN 29 CN= 83 22 18 SCS TR-20 METHOD 16 TYPE II 24-HOUR 14 RAINFALL= 7 . 0 IN p 12 10 PEAK= 31 . 2 CFS 8 e 12.03 HRS 6 4 VOLUME= 2 .22 AF" 2 0m ro tr in w N co 0) � TIME (hours ) SUBCATCHMENT 3 FLOW FROM ELM SQUARE PROJECT RUNOFF PEAK- 31 .2 CFS @ 12.09 _HOUftS HOUR 0.00 . 10 ,20 .30 40 .50 .60 .70 _.80 .90 10.00 1^ .7 .8 .8 .9 .9 1 .0 1 . 1 1 .2 1 .3 1 .4 11 .00 1 1 .5 1 .6 1 .8 2.0 2.3 2.6 3. 1 4.9 9.0 16.7 12.00 1 27.2 31 .2 24.6 16. 1 10.8 7.8 5.9 4.7 3. 9 3.4 13.00 1 3.0 2.7 2.5 2.4 2.2 2 . 1 2.0 1 .9 1 .8 1 .7 14.00 1 1 .7 1 .6 1 .5 1 .5 1 .4 1 .4 1 .4 1 .3 1 .3 1 .3 15.00 1 1 .2 1 .2 1 .2 1 .2 1 . 1 1 . 1 1 . 1 1 . 1 1 .0 1 .0 16.00 1 1 .0 .9 . 9 .9 .9 .9 .9 .9 .9 .8 17.00 1 .8 .8 .8 .8 .8 .8 .8 .8 .8 .7 18.00 1 .7 .7 .7 .7 .7 .7 .7 .7 .7 .6 19.00 1 .6 .6 .6 .6 .E .6 .6 .6 .6 .6 20.00 ! .5 SUBCATCHMENT 4 -> REACH 6 X ,Y = 8.7 1 .6 <1 1 > RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL= 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER (ACRE ) (FT ) (-Y. )- (MIN ) ---- GROUND COVERS__(-%CN), - CN C (CFS ) Data for W.S.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 100YR) Page 49 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 HydroCAD Release 2.40 (c ) 1986 1990 Applied Microcomputer Systems. 4 8.52 1000 6.0 17 58%55 37Y93 5%98 71 - 36.9 i SUBCATCHMENT 4 FLOW FROM EAST SIDE OF KENT SITE PERCENT__ ON 58.00 55 SOS TR-20 METHOD 37.00 93 TYPE II 24-HOUR 5.00 98 RAINFALL= 7.0 IN 100.00 71 PEAK- 36.9 CFS @ 12.04 HRS AREA= 8.52 AC To= 17 MIN VOLUME= 2.41 AF LENGTH= 1000 FT SLOPE= 6.0 SUBCATCHMENT 4 RUNOFF FLOW FROM EAST SIDE OF KENT SITE 34 32 ARER- 6 .52 AC 30 To= 17 MIN 28 26 CN= 71 r. 24 22 SCS TR--20 METHOD 18 TYPE II 24-HOUR 16 RAINFALL= 7 . 0 Its 14 12 to PERK= 36 . 9 CFS 8 G 12. 04 HRS 6 VOLUME- 2 . 41 AF 4 2 Dm tv c� v- to W N as to + TIME (hours ) SUBCATCHMENT 4 FLOW FROM EAST SIDE OF KENT SITE RUNOFF PEAK= 36.9 CFS @ 12.04 HOURS HOUR 0.00 . 10 20 30 .40 .50 .60 .70_- - .80 .90 10.00 1 .4 .4 .5 .5 .6 .6 .7 .8 .9 1 .0 11 .00 1 1 . 1 1 .2 1 .4 1 .6 1 .9 2.2 2.9 5.4 10.9 21 .7 12.00 1 35.5 34.7 22.3 13.7 9.6 7. 1 5.6 4.6 4.0 3.6 13.00 I 3.4 3. 1 2.9 2.8 2.6 2.5 2.4 2.3 2.2 2. 1 14.00 1 2.0 1 .9 1 .8 1 .8 1 .7 1 .7 1 .6 1 .6 1 .6 1 .6 15.00 1 1 .5 1 .5 1 .5 1 .4 1 .4 1 .4 1 .3 1 .3 1 .3 1 .2 16.00 1 1 .2 1 .2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 .0 17.00 1 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1 .0 .9 .9 18.00 1 .9 .9 .9 .9 .9 .9 .8 .8 .8 .8 .7 .7 .7 .7 .7 .7 20.00 1 .7 SUBCATCHMENT 6 ? POND 2 X ,Y = 8.7 6.7 <1 1 > Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( 1O0YR) Page 50 Prepared 6y THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JANSZ droCAD Release 2.40 (c ) 1986 1990 Applied Microcoinl2utpr Systems RUNOFF BY SCS TR-20 METHOD: TYPE II 24-HOUR RAINFALL- 7.0 IN SUSCAT AREA LEN SLOPE Tc W6T'D PEAK UMBER (ACRE ) (FT ) %) (MIN) --- -GROUND COVERS (%CN) ---- C C CFS ) 5 2.28 380 2.6 12 62%55 33%93 5%98 - 70 - 11 .4 SUBCATCHMENT 5 FLOW FROM FRONT CENTER OF KENT SITE PERCENT__ ON 62 .00 55 SCS TR-20 METHOD 33.00 93 TYPE II 24-HOUR 5.00 98 RAINFALL= 7.0 IN 100.00 70 PEAK= 11 .4 CFS @ 11 .99 HRS AREA= 2.28 AC Tc= 12 MIN VOLUME= .63 AF LENGTH= 380 FT SLOPE= 2 .6 %. SUBCRTCHMENT 5 RUNOFF FLOW FROM FRONT CENTER OF KENT SITE 11 10 RRER= 2 .26 RC Tc= 12 MIN B CN= ?0 4 ? SCS TR-20 METHOD a B TYPE II 24-HOUR 5 RAINFALL- ? .0 IN © 4 PEAK= 11 .4 CFS @ 11 .99 HRS 2 VOLUME- . 63 AF 1 Om -� aj to co r` co a) 0 TIME: (hours) SUBCATCHMENT 5 FLOW FROM FRONT CENTER OF KENT SITE RUNOFF PEAK= 11 .4 CFS @ 11 .99 _HOURS HOUR 0.00 10 20 .30 .40 .50 .60 .70__ .80 .90 10.00 1 . 1 . 1 . 1 . 1 . 1 .2 .2 .2 .2 .3 11 .00 1 .3 .3 .4 .4 .5 .6 1 .0 2. 1 4.2 8.4 12.00 1 11 .3 7.2 3.6 2.4 1 .8 1 .4 1 .2 1 .0 1 .0 . 9 13.00 1 .8 .8 .7 .7 .7 .6 .6 .6 .5 .5 14.00 1 .5 .5 .5 .5 .4 .4 .4 .4 .4 .4 15.00 1 .4 .4 .4 .4 .4 .4 .3 .3 .3 .3 16.00 1 .3 .3 .3 .3 .3 .3 .3 .3 .3 .3 17.00 1 .3 .3 .3 .3 .3 .3 .3 .2 .2 .2 18.00 1 .2 .2 .2 .2 .2 .2 .2 .2 .2 .2 19.00 1 .2 .2 .2 .2 .2 .2 .2 .2 .2 .2 20.00 1 .2 Data for W.B.KENT&SONS-PRE-DEVELOPED HYOROLOGY( 100YR) Page 51 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 lvdrnCAD release 2.40 (c ) 1986 1990 Applied Microcomputer- SV5tem5 SUBCATCHMENT 6 -} REACH 3 X ,Y = 6.7 6.7 <1 1? RUNOFF BY SCS TR-ZO METHOD: TYPE II Z4-HOUR RAINFALL- 7.0 IN SUBCAT AREA LEN SLOPE Tc WGT'D BEAK NUMBER (ACRE) (FT ) (% ) (MIN) --- GROUND COVERS (%CN ) ---- CN C (CFS ) 6 16,00 375 2.0 6 S%SS 92%98 - - 95 - 146.7 SUBCATCHMENT 6 REAR OF ELM SQ. AND KENT SITE PERCENT CN 8.00 55 SCS TR-20 METHOD 92.00 98 TYPE II 24-HOUR 100.00 95 RAINFALL= 7.0 IN AREA- 16.00 AC Tc= 6 MIN PEAK= 146.7 CFS @ 11 .90 HRS LENGTH= 375 FT SLOPE= 2.0 % VOLUME= 7.06 AF SUBCATCHMENT 6 RUNOFF REAR OF ELM SO. AND KENT SITE 140 130 AREA= 16 AC 120 Tc= 6 MIN 1 1 s3 CN= 95 „ 100 - 90 80 SCS TR-20 METHOD 70 TYPE II 84-HOUR 6M RAINFALL= 7 . 0 IN Q 50 PEAK= 146 . 7 CFS 40 30 @ 11 . 9 HRS 2 VOLUME= 7 .OG AF 10 0�� .� N en �t in to r- oo m 0 r, TIME (hours) Data for W.B.KENT&S0NS-PRE-DEVELOPED HYDROL0GY( 100YR) Page 52 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD, MA. 31JAN90 droCAD Release 2.4 c3 1986 1990 Anglied Microcomuter Sy st ms SUBCATCHMENT 6 REAR OF ELM SQ. AND KENT SITE RUNOFF PE K= 146,2 CFS @ 11 .90 HOURS HOUR _ 0.00 10 20 .30 .40 _ .50 .60 ._70 .80 .90 10.00 1 4.0 4.2 4.5 4.8 5.0 5.3 5.7 6. 1 6.5 7.0 11 .00 1 7.4 8.2 9.3 10.3 11 .4 13.6 28.9 53.8 91 .6 146.7 12.00 1 89.5 28.6 19.0 15.9 13.4 10.9 9.5 8.8 8.2 7.7 E 13.00 1 7. 1 6.7 6.3 6.0 5.7 5.4 5. 1 4.9 4.7 4.5 14.00 1 4.3 4. 1 4.0 3.9 3.9 3.8 3.7 3.6 3.6 3.5 15.00 1 3.4 3.3 3.2 3.2 3. 1 3.0 2.9 2.8 2.8 2.7 16.00 1 2.6 2.6 2.5 2.5 2.5 2.5 2.4 2.4 2.4 2.3 17.00 1 2.3 2.3 2.3 2.2 2.2 2.2 2. 1 2. 1 2. 1 2. 1 18.00 1 2.0 2.0 2.0 1 .9 1 .9 1 . 9 1 .9 1 .8 1 .8 1 .8 19.00 1 1 .8 1 .7 1 .7 1 .7 1 .6 1 .6 1 .6 1 .6 1 .5 1 .5 20.00 1 1 .5 Data for W.B.KENT&SONS-PRE-DEVELOPED HYDROLOGY( I00YR) Page 53 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELD, MA. 31JAN90 H droCAD Release 2.40 (c ) 1986 . 1990 Aijolied Migrocomiputer Systems REACH I to 9 REACH I -> REACH 2 X ,Y = 3.6 4.4 <.1 17 REACH ROUTING BY STOR--IND METHOD REACH BOTTOM SIDE PEAR CONTACT PEAK NO. OIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN) (FT ) (FT ) ( T/FT ) (FT ) (FT/FT ) (FPS ) (SEC CFS ) 1 21 ,0 - - - - .015 78 .0073 5.5 14 11 .7 REACH I CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK DEPTH END AREA QISCH (FT ) ( SQ-FT ) (CFS ) 21 " PIPE STAR-IND METHOD 0.0 0.0 0.0 MAX . DEPTH= 1 .75 FT .2 . 1 .2 n= .015 PEAK VELOCITY= 5.5 FPS .4 .3 1 .0 LENGTH= 78 FT CONTACT TIME 14 SEC .5 .6 2.3 SLOPE= .0073 FT/FT Qin = 71 .8 CFS @ 12.67 HRS 1 .2 1 .8 9.8 Qout= 11 .7 CFS @ 12. 10 HRS 1 .4 2. 1 11 .5 ATTEN= 84 % LAG= 0.0 MIN 1 .6 2.3 12.S IN/OUT= 11 . 19 t 7.94 AF 1 .6 2.3 12.6 1 .7 2.4 12.S 1 .8 2.4 11 .7 REACH 1 DISCHARGE CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK 1 .7 1 .6 - 1 . 4 1 . 3 - 1 . 2 4- 1 . 0 .7� Ld ;5 21 " PIPE . 4 n=.015 L=78` S=.0073 . 3 . 2 . 1 0. 0m m rr Lra cn r� N DISCHARGE (cfs ) Data for W.B.KENTBSONS-PRE-DEVELOPED HYDROLOGY( IOOYR) Page 54 Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN90 Hy-d-roCAQ Relea5e 2.40 ( 1986 1990 Applied Microcomuter S st m REACH 1 INFLOW & OUTFLOW CULVERT X-ING 114 FLOWING 014TO RIPRRIRN PK 70 65I- cu21 " PIPE G0n=.015 L.=76 ` S=.0075 55 f 513STOR-INII METHOD VELOCITY= 5. 5 FPS 35CONTACT- 14 SEC o 2gDin= 71 . 8 CFS � 20Qout= 11 . 7 CFS 15LRG= 0 MIN 1�7 =�,----______________-�-_ 5 OISs -� m At TIME (hours ) REACH I CULVERT X-ING 114 FLOWING ONTO RIPARIAN PK OUTFLOW PEAK 11,.7 CFS @ 12. 10 HOURS HOUR 0.00 . 10 .20 .30__ __. ._40 ,S0 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11 .00 1 0.0 . 1 .2 .3 .5 .7 1 . 1 1 .6 2.7 4.9 12.00 1 9.8 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 13.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 14.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 15.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 16.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 17.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 18.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 19.00 1 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 11 .7 20.00 1 11 .7 REACH 2 > REACH 3 X ,Y = 5.4 4.4 C1 2) REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN) (FT ) (FT ) (FT/FT ) (FT ) (FT/FT ) (FPS ) (SEC ) (CFS ) 2 - 12.0 1 .8 2.00 2.00 .045 1200 .0037 2.2 555 35.8 Data for W.S.KENTBSONS-PRE-DEVELOPED HYDROLOGY( 1O0YR) Page SS Prepared by THOMAS E. NEVE ASSOCIATES , INC. ,TOPSFIELD , MA. 31JAN9O Hydro CAD Release 2.40 (c ) 1286 , 1990 Apolijad M c oaoM uier Systems E REACH 2 MAIN STREAM THROUGH RIPARIAN PARK DEPTH END AREA DISCH _(FT ) (Sq-FT ) (_CFS) 12' x 1 .8' CHANNEL STOR--IND METHOD 0.0 0.0 0.0 SIDE SLOPE= 2 '/' MAX. DEPTH= 1 .30 FT .2 2.2 1 .4 n= .045 PEAK VELOCITY= 2.2 FPS .4 4.4 4.3 LENGTH= 1200 FT CONTACT TIME = 555 SEC .5 S.6 8.4 SLOPE= .0037 FT/FT Qin = 36.8 CFS @ 12.52 HRS .8 9.6 15.2 Qout= 35.8 CFS @ 12.63 HRS 1 . 1 13.5 26 . 1 ATTEN= 3 % LAG= 6.9 MIN 1 .4 18.3 41 .6 IN/OUT= 12.30 / 12 .05 AF 1 .8 23.2 69.7 REACH 2 DISCHARGE MAIN STREAM THROUGH RIPARIAN PARK 1 . 8 r-' 1 . 7 1 .6 1 . 5 1 . 4 1 . 3 1 . 2 110 . 5 H- , 7 A . 6 12 ' x 1 .8 ' CHANNEL . 4 SIDE SLOPE- 2 . 3 n-. 045 L=1200' 5=.0037 .2 0. 0 . 1 DISCHARGE (cfs ) REACH 2 INFLOW & OUTFLOW MAIN STREAM THROUGH RIPARIAN PARK 36 2 12' x 1 .8 ' CHANNEL 30 `, SIDE SLOPE- 228 - n=. 045 L=1200' 5=. 0037 26 24 ` 22 STOR-IND METHOD L 20 18 VELOCITY= 2. 2 FPS g CT= 555 SEC `1 12 i Q 1 n- 36.8 CFS 8 Qout= 35.8 CFS 9 LRG= 6.9 MIN 8 0m ., r'cv m w W) cn L` 00 0) m TIME (hours ) Data for W.B.KENTBSONS-PRE-DEVELOPED HYDROL0GY( 100YR) Page 56 Prepared by THOMAS E. NEVE ASSOCIATES, INC. ,TOPSFIELO , MA. 31JAN9O droC D Relea5e 2.40 (a ) 1986 1990 Apialied Microcomputer Systems REACH 2 MAIN STREAM THROUGH RIPARIAN PARK OUTFLOW PEAK= 35.8 CFS @ 12.63 HOURS HOUR 0.00 . 10 .20 .,30 .40 .50 .60 .70 .80 .90 10.00 1 0.0 0.0 0.0 0.0 �0.0 . 1 . 1 .2 .2 .2 11 .00 1 .3 .3 .3 .4 .5 .6 .7 .9 1 .3 2.6 12.00 1 5.7 11 .4 18. 1 24.6 30.4 34.2 35.7 35.3 33.7 31 .4 13.00 ! 29.0 26. 9 25.3 24.0 22.8 21 .8 21 .0 20.3 19.7 19.2 14.00 1 18.8 18.4 18. 1 17.8 17.6 17.4 17.2 17.0 16.9 16.8 15.00 1 16.7 16.6 16.5 16.4 16.3 16.3 16.2 16. 1 16. 1 16.0 16.00 1 15.9 15.9 15.8 15.8 15.7 15.6 15.6 15.5 15.5 15.4 17.00 1 f5.4 15.4 15.3 15.3 15.3 15.2 15.2 15.2 15. 1 15. 1 18.00 1 15. 1 15. 1 15.0 15.0 15.0 14.9 14. 9 14. 9 14.9 14.8 19.00 1 14.8 14.8 14.7 14.7 14,7 14.6 14.6 14.6 14.6 14.5 20.00 1 14.5 REACH 3 7 PON€? 2 X ,Y = 7.2 4.4 <1 1 ? REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout ( IN) (FT ) (FT ) (FT/FT ) (FT) (FT/FT ) (FPS ) (SEC ) (CFS ) 3 - 12.0 1 .8 2.00 2.00 .045 1500 .0037 3.0 501 112.4 REACH 3 MAIN STREAM BEHIND ELM SQUARE DEPTH END AREA DISCH (FT ) (SQ-FT ) (CFS_) 12' x 1 .8' CHANNEL STAR-IND METHOD 0.0 0.0 0.0 SIDE SLOPE= 2 '/' MAX. DEPTH= 2.84 FT .2 2.2 1 .4 n= .045 PEAK VELOCITY= 3.0 FPS .4 4.4 4.3 LENGTH- 1500 FT CONTACT TIME = 501 SEC .5 6 .6 8.4 SLOPE= .0037 FT/FT Qin = 149.3 CFS @ 11 ,90 HRS .8 9.6 15.2 Qout= 112.4 CFS @ 11 .99 HRS 1 . 1 13.5 26. 1 ATTEN= 25 % LAG- 5.2 MIN 1 .4 18.3 41 .6 IN/OUT= 19. 11 / 18.77 AF 1 .8 23.2 59.7