CONNECTICUT RIVER BASIN
01141800 MINK BROOK NEAR ETNA, NH
LOCATION.--Lat 43°42'08", long 72°ll'15", Grafton County, Hydrologic Unit 01080104, on left bank, 2 mi northeast of
Etna, and 5 mi east of Hanover.
DRAINAGE AREA.--4.60 mi².
PERIOD OF RECORD.--Discharge records: August 1962 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Elevation of gage is 1,000 ft above sea level, from topographic map.
REMARKS.--Records fair except those for estimated daily discharges and those below 0.5 ft³/s, which are poor.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 55 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
Oct. 21 0800 92 2.48 Feb. 22 1530 * 314 3.24
Nov. 9 1145 100 2.52 Apr. 7 1445 127 2.64
Dec. 2 0815 280 3.15 Apr. 18 2230 207 2.94
Dec. 24 2230 56 2.29 May 6 2045 72 2.38
Jan. 2 1230 Ice jam * 3.35
Minimum discharge, 0.07 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 .69 4.0 17 e7.8 2.0 e8.0 15 17 6.6 .31 .18 .51
2 .54 3.6 107 e7.1 1.8 e12 11 15 4.9 .29 .17 .36
3 .54 3.2 29 e6.2 1.8 12 e12 15 3.6 4.5 .19 1.1
4 .49 3.0 18 e5.7 1.8 8.7 e15 18 3.1 3.5 .17 .51
5 .49 2.8 13 e6.4 2.1 7.5 e20 12 2.7 1.0 .19 .38
6 .50 2.8 11 e7.8 2.0 8.9 e35 23 2.4 .62 .17 .32
7 .48 3.1 9.6 5.8 1.9 e6.5 e70 27 2.2 .49 .14 .32
8 .49 3.9 e9.0 e5.8 1.8 e5.8 36 17 2.0 .42 .13 .32
9 6.0 48 e7.2 e5.2 1.8 e5.1 e24 15 1.7 .57 .11 .36
10 9.4 20 e6.8 e5.1 1.8 e4.7 e17 20 1.4 2.0 .10 .30
11 6.8 12 e6.2 e4.5 1.7 e4.1 e16 16 1.1 .66 .08 .30
12 2.6 8.8 e7.0 e4.0 1.8 e4.0 17 13 .95 .47 .11 .64
13 1.8 7.2 9.1 e3.7 1.8 e4.0 22 11 1.0 .43 .83 .40
14 1.5 6.1 8.2 e3.4 1.9 e5.0 28 9.9 .89 .46 .46 .35
15 1.1 e5.9 8.0 e3.4 1.9 e3.8 31 14 .74 4.3 .27 .30
16 1.0 e5.3 8.0 e4.5 e1.9 e3.6 34 14 .67 1.8 .33 .25
17 .97 4.7 16 e5.5 e1.8 e3.2 27 11 .70 .79 .21 .20
18 .87 e4.7 23 e4.0 e2.0 e3.1 85 10 3.1 .60 .16 .21
19 .82 e4.9 22 e2.8 e4.5 e3.1 124 10 9.3 .63 .13 .20
20 14 e4.7 e14 e2.6 e5.9 3.1 49 11 2.8 .53 .11 .35
21 51 e4.0 e9.6 e2.3 4.3 3.1 40 8.1 1.7 .51 .69 .38
22 15 e3.8 e8.2 e2.8 136 3.1 34 7.3 1.2 .49 .96 .26
23 8.4 e3.4 e7.3 e4.2 e50 2.9 29 6.5 .85 .39 1.0 .29
24 9.9 e3.1 e13 e3.2 e6.6 e2.8 24 5.9 .74 .35 .51 .27
25 6.2 e3.0 23 3.5 e4.7 e2.6 20 6.0 .66 .31 .36 .24
26 4.9 7.6 e11 2.7 e4.1 13 18 5.4 .58 .26 .26 .24
27 4.4 6.5 e7.8 1.9 e10 8.4 15 4.7 .51 .25 .26 .22
28 4.3 e5.8 e6.1 1.9 e13 12 30 4.2 .45 .26 1.0 .23
29 3.7 e4.9 e10 1.9 --- 21 21 3.7 .40 .35 .90 .48
30 4.6 e4.3 e12 1.8 --- 24 15 3.5 .35 .22 .56 .43
31 5.1 --- e8.2 1.9 --- 21 --- 3.6 --- .20 .40 ---
TOTAL 168.58 205.1 465.3 129.4 272.7 230.1 934 357.8 59.29 27.96 11.14 10.72
MEAN 5.44 6.84 15.0 4.17 9.74 7.42 31.1 11.5 1.98 .90 .36 .36
MAX 51 48 107 7.8 136 24 124 27 9.3 4.5 1.0 1.1
MIN .48 2.8 6.1 1.8 1.7 2.6 11 3.5 .35 .20 .08 .20
CFSM 1.18 1.49 3.26 .91 2.12 1.61 6.77 2.51 .43 .20 .08 .08
IN. 1.36 1.66 3.76 1.05 2.21 1.86 7.55 2.89 .48 .23 .09 .09
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1962 - 1997, BY WATER YEAR (WY)
MEAN 5.24 7.22 7.05 4.70 5.09 13.5 23.9 12.0 4.44 2.45 1.94 1.66
MAX 23.2 17.9 22.4 16.4 22.4 48.7 49.4 27.9 13.8 11.6 15.0 7.66
(WY) 1976 1976 1984 1986 1984 1977 1969 1976 1973 1996 1976 1987
MIN .23 .76 1.03 .67 .70 2.66 5.78 3.29 .53 .19 .047 .089
(WY) 1964 1972 1979 1981 1980 1989 1995 1965 1964 1965 1965 1995
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1962 - 1997
ANNUAL TOTAL 3823.00 2872.09
ANNUAL MEAN 10.4 7.87 7.43
HIGHEST ANNUAL MEAN 14.0 1976
LOWEST ANNUAL MEAN 2.52 1965
HIGHEST DAILY MEAN 107 Apr 16 136 Feb 22 261 Mar 31 1987
LOWEST DAILY MEAN .19 Sep 7 .08 Aug 11 a .02 Aug 7 1964
ANNUAL SEVEN-DAY MINIMUM .22 Sep 1 .12 Aug 6 b .02 Aug 16 1985
INSTANTANEOUS PEAK FLOW c 314 Feb 22 c 629 Aug 1 1986
INSTANTANEOUS PEAK STAGE d 3.35 Jan 2 d 4.28 Jan 9 1978
INSTANTANEOUS LOW FLOW .07 Aug 11 .01 Aug 11 1964
ANNUAL RUNOFF (CFSM) 2.27 1.71 1.62
ANNUAL RUNOFF (INCHES) 30.92 23.23 21.95
10 PERCENT EXCEEDS 26 19 18
50 PERCENT EXCEEDS 5.4 3.6 3.1
90 PERCENT EXCEEDS .53 .30 .35
a Also occurred on September 2-5, 21, 1995.
b Also occurred on August 30, 1995.
c From rating curve extended above 130 ft³/s on basis of slope-area measurement at gage heights 3.50 ft and 3.75 ft.
d Ice jam.
e Estimated.
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