CONNECTICUT RIVER BASIN
01139800 EAST ORANGE BRANCH AT EAST ORANGE, VT
LOCATION.--Lat 44°05'34", long 72°20'10", Orange County, Hydrologic Unit 01080103, on left bank, 0.3 mi east of
East Orange, 1.6 mi upstream from mouth, and 5 mi southwest of Orange.
DRAINAGE AREA.--8.95 mi².
PERIOD OF RECORD.--Discharge records: June 1958 to current year.
REVISED RECORDS.--WDR MA-NH-RI-VT-72-l: 1960-64(P), 1969- 71(P).
GAGE.--Water-stage recorder. Elevation of gage is 1,180 ft above sea level, from topographic map.
REMARKS.--Records good except those for estimated daily discharges and doubtful gage-height record, October 1 to
November 1 and April 2 to May 20, which are fair. Occasional diurnal fluctuation at low flow caused by mill
upstream.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 160 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
Oct. 21 unknown * 188 * 3.83 Dec. 2 0515 168 3.72
Minimum discharge, 2.2 ft³/s, August 11.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 4.8 10 31 e16 e9.0 e14 e20 79 20 4.4 3.1 5.1
2 4.0 9.6 87 e16 e8.7 e15 25 84 16 4.2 3.0 4.5
3 4.4 9.6 34 e17 e8.6 e16 25 80 14 18 3.7 11
4 4.4 9.6 28 e17 e8.6 e16 26 78 13 13 3.1 6.7
5 3.6 9.5 27 e17 e9.0 e15 33 61 12 8.3 3.4 5.3
6 3.4 9.7 26 e17 e8.6 e14 56 67 11 6.3 3.3 4.5
7 3.2 10 25 e17 e8.7 e13 76 82 10 5.6 2.8 5.1
8 3.0 12 e24 e16 e8.6 e16 54 58 9.7 5.3 2.6 6.1
9 12 69 e23 e15 e8.5 e15 41 52 8.9 7.8 2.5 4.6
10 15 33 e23 e15 e8.2 e15 54 59 8.1 6.8 2.4 4.3
11 14 23 23 e14 e8.1 e14 46 50 7.4 4.9 2.4 4.4
12 7.0 20 23 e13 e8.1 e14 36 43 7.9 4.1 2.8 13
13 6.1 19 23 20 e7.8 e13 40 39 10 3.9 17 6.1
14 5.4 e18 23 e13 e7.8 e13 44 35 9.3 6.7 8.0 5.1
15 4.6 e17 23 e13 e7.8 e13 42 33 7.1 31 4.2 4.6
16 4.2 e16 22 e13 e7.6 e12 49 35 6.4 12 5.0 4.2
17 4.0 e16 26 e12 e7.0 e12 55 40 17 9.0 3.7 3.9
18 4.0 16 31 e11 e7.6 e11 61 33 31 22 3.2 4.0
19 3.9 16 28 e11 e13 e11 73 33 37 14 2.8 3.7
20 4.7 16 24 e11 e25 e11 67 29 14 9.2 2.6 4.4
21 86 15 e20 e10 e13 e11 68 25 12 7.3 23 6.0
22 56 14 e21 e10 25 e10 69 25 11 6.4 25 4.7
23 31 13 e20 e10 e23 e10 71 22 10 5.4 17 4.6
24 20 e12 37 e10 e15 e10 71 20 8.5 5.0 8.1 5.1
25 15 e12 44 e10 e14 e10 71 21 7.7 4.5 6.1 4.3
26 12 e13 e24 e10 e13 e18 73 19 7.2 4.1 5.3 4.3
27 11 e11 e23 e10 e17 e14 71 17 6.8 3.9 5.6 4.6
28 10 e12 e22 e9.6 e17 e17 101 16 6.0 4.1 13 4.1
29 11 e12 e23 e9.4 --- e29 84 15 5.4 4.2 7.4 14
30 9.6 e11 e19 e9.2 --- e32 76 15 4.9 3.5 6.7 10
31 15 --- e18 e9.0 --- e30 --- 16 --- 3.2 5.1 ---
TOTAL 392.3 484.0 845 401.2 323.3 464 1678 1281 349.3 248.1 203.9 172.3
MEAN 12.7 16.1 27.3 12.9 11.5 15.0 55.9 41.3 11.6 8.00 6.58 5.74
MAX 86 69 87 20 25 32 101 84 37 31 25 14
MIN 3.0 9.5 18 9.0 7.0 10 20 15 4.9 3.2 2.4 3.7
CFSM 1.41 1.80 3.05 1.45 1.29 1.67 6.25 4.62 1.30 .89 .73 .64
IN. 1.63 2.01 3.51 1.67 1.34 1.93 6.97 5.32 1.45 1.03 .85 .72
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1958 - 1997, BY WATER YEAR (WY)
MEAN 10.1 13.9 13.2 10.0 9.52 17.8 50.5 34.7 13.7 7.14 5.61 5.16
MAX 35.5 33.1 41.0 26.6 46.0 47.0 91.2 75.7 41.1 41.0 25.5 14.9
(WY) 1976 1990 1984 1978 1981 1976 1969 1971 1973 1973 1990 1976
MIN 1.14 3.41 2.91 2.53 1.90 5.02 16.3 11.4 4.87 1.63 1.15 .40
(WY) 1964 1979 1964 1971 1964 1971 1995 1995 1995 1963 1970 1963
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1958 - 1997
ANNUAL TOTAL 8319.2 6842.4
ANNUAL MEAN 22.7 18.7 16.0
HIGHEST ANNUAL MEAN 29.1 1976
LOWEST ANNUAL MEAN 6.71 1965
HIGHEST DAILY MEAN 225 Jan 19 101 Apr 28 260 May 4 1971
LOWEST DAILY MEAN 3.0 Oct 8 2.4 Aug 10 .20 Sep 3 1963
ANNUAL SEVEN-DAY MINIMUM 3.7 Oct 2 2.7 Aug 6 .21 Sep 6 1963
INSTANTANEOUS PEAK FLOW a 188 Oct 21 ab 800 Jul 23 1990
INSTANTANEOUS PEAK STAGE 3.83 Oct 21 c 6.35 Jan 22 1959
INSTANTANEOUS LOW FLOW 2.2 Aug 11 d .10 Sep 9 1963
ANNUAL RUNOFF (CFSM) 2.54 2.09 1.78
ANNUAL RUNOFF (INCHES) 34.58 28.44 24.24
10 PERCENT EXCEEDS 52 44 40
50 PERCENT EXCEEDS 15 13 8.3
90 PERCENT EXCEEDS 4.7 4.2 2.3
a From rating curve extended above 160 ft³/s on basis of slope-area measurement of peak flow.
b From floodmarks.
c Ice jam.
d Also occurred on September 19, 1963.
e Estimated.
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