FIVEMILE RIVER BASIN 01209761 FIVEMILE RIVER near NEW CANAAN, CT LOCATION.--Lat 4110'28", long 7330'43", Fairfield County, Hydrologic Unit 01100006, on right bank, 40 ft downstream from paved driveway leading to private residence, near the cul-de-sac at the end of Indian Rock Road. DRAINAGE AREA.--1.00 mi2. PERIOD OF RECORD.--May 1998 to current year. GAGE.--Water-stage recorder. Telephone telemetry at station. REMARKS.--Records poor. Flow regulated from New Canaan Reservoir by Second Taxing District Water Department. EXTREMES FOR CURRENT YEAR.--Maximum discharge, 26 ft3/s, June 7, gage height, 2.68 ft; minimum discharge, 0.11 ft3/s, Jul. 2, 7-9, 11, gage height, 1.29 ft. DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 .60 .77 1.7 .72 3.8 2.2 1.2 1.2 .65 .22 3.7 .30 2 .51 2.3 .90 .75 2.7 1.9 1.1 2.1 .45 .17 2.6 .30 3 .54 11 .59 .92 2.0 1.6 1.0 1.4 .47 .29 1.8 .30 4 .85 3.5 .70 1.4 1.8 1.4 2.4 1.2 .26 .57 3.4 .30 5 1.0 1.6 .79 5.2 1.5 1.4 1.7 1.1 .23 .33 1.1 .25 6 .61 1.2 2.4 2.0 1.3 1.2 .94 .85 10 .21 .58 .23 7 .59 1.1 5.7 1.2 1.2 1.1 .78 .78 18 .17 .64 .23 8 .59 .59 2.5 .84 1.0 1.3 .71 .98 5.1 .14 .45 .23 9 .59 .61 1.5 .73 .91 1.3 3.5 .84 2.7 .14 .36 .23 10 1.0 .80 1.5 5.6 1.0 1.3 2.9 .92 1.7 .17 .48 .23 11 .81 .92 2.1 11 1.9 5.4 1.9 1.8 1.3 .15 .48 .23 12 .70 .49 .83 5.2 2.6 12 1.7 1.6 3.3 .20 1.5 .23 13 .81 .63 .76 e3.9 1.6 5.0 .83 2.0 2.2 .23 .92 .28 14 3.5 .87 3.5 e3.2 11 3.0 .79 6.6 1.8 .23 3.1 .23 15 1.1 .88 7.0 e2.6 7.8 2.3 .82 2.2 1.5 .52 2.9 .41 16 .50 .87 3.8 e2.3 3.6 2.1 2.5 1.1 1.2 .35 2.5 .25 17 .83 .61 2.2 e1.9 2.7 6.8 2.3 .83 .88 .26 1.3 .23 18 7.6 .57 1.5 e1.7 2.1 4.0 3.0 1.8 1.7 .25 .69 .23 19 2.7 .71 1.1 1.6 2.1 2.7 1.9 4.8 1.9 .23 .61 .90 20 5.4 .71 2.2 1.5 1.5 2.1 1.2 4.2 .95 .23 .43 .58 21 6.1 .75 8.4 e1.4 1.2 1.8 5.1 3.3 .50 .23 .33 .27 22 2.7 .71 3.3 e1.3 1.2 1.6 11 2.4 1.0 .24 .30 .24 23 2.6 .68 1.9 e1.2 1.7 1.4 7.3 1.9 .63 .23 .32 .23 24 2.2 .64 e1.4 e1.2 3.5 1.4 5.2 7.8 .36 .23 .34 .30 25 1.4 1.3 1.1 e1.2 5.1 1.1 3.7 4.1 .30 .24 .32 .27 26 1.1 2.9 e.95 e1.1 4.4 1.2 3.2 2.2 .26 .84 .30 .31 27 1.1 9.9 e.85 e1.1 3.5 .68 3.0 1.3 .32 3.5 .30 .32 28 .43 5.2 e.75 e1.1 4.0 6.9 2.5 .97 .34 1.3 .30 .26 29 .37 2.5 .73 e1.1 2.9 4.0 2.3 .84 .27 .59 .30 .24 30 .50 1.7 .73 e1.1 --- 2.2 2.0 .75 .32 1.3 .30 .23 31 .75 --- .77 4.0 --- 1.5 --- .71 --- 1.4 .30 --- TOTAL 50.08 57.01 64.15 70.06 81.61 83.88 78.47 64.57 60.59 15.16 32.95 8.84 MEAN 1.62 1.90 2.07 2.26 2.81 2.71 2.62 2.08 2.02 .49 1.06 .29 MAX 7.6 11 8.4 11 11 12 11 7.8 18 3.5 3.7 .90 MIN .37 .49 .59 .72 .91 .68 .71 .71 .23 .14 .30 .23 CFSM 1.62 1.90 2.07 2.26 2.81 2.71 2.62 2.08 2.02 .49 1.06 .29 IN. 1.86 2.12 2.39 2.61 3.04 3.12 2.92 2.40 2.25 .56 1.23 .33 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1998 - 2000, BY WATER YEAR (WY) MEAN .96 1.08 1.10 1.55 2.62 3.32 2.55 2.51 1.24 .53 .53 .46 MAX 1.62 1.90 2.07 2.26 2.81 3.93 2.62 2.93 2.02 .59 1.06 .94 (WY) 2000 2000 2000 2000 2000 1999 2000 1999 2000 1999 2000 1999 MIN .31 .26 .13 .84 2.42 2.71 2.48 2.08 .64 .49 .21 .15 (WY) 1999 1999 1999 1999 1999 2000 1999 2000 1999 2000 1998 1998 e Estimated. FIVEMILE RIVER BASIN 01209761 FIVEMILE RIVER near NEW CANAAN, CT--Continued SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1998 - 2000 ANNUAL TOTAL 627.23 667.37 ANNUAL MEAN 1.72 1.82 1.57 HIGHEST ANNUAL MEAN 1.82 2000 LOWEST ANNUAL MEAN 1.31 1999 HIGHEST DAILY MEAN 26 Mar 22 18 Jun 7 26 Mar 22 1999 LOWEST DAILY MEAN .00 Jan 2 .14 Jul 8 .00 Dec 20 1998 ANNUAL SEVEN-DAY MINIMUM .13 Jul 30 .17 Jul 6 .07 Nov 19 1998 INSTANTANEOUS PEAK FLOW 26 Jun 7 56 May 19 1999 INSTANTANEOUS PEAK STAGE 2.68 Jun 7 3.28 May 19 1999 INSTANTANEOUS LOW FLOW .11 Jul 2 .00 Nov 22 1998 ANNUAL RUNOFF (CFSM) 1.72 1.82 1.57 ANNUAL RUNOFF (INCHES) 23.33 24.83 21.27 10 PERCENT EXCEEDS 3.5 4.0 3.2 50 PERCENT EXCEEDS .83 1.1 .71 90 PERCENT EXCEEDS .31 .26 .14