PISCATAQUA RIVER BASIN
01073000 OYSTER RIVER NEAR DURHAM, NH
LOCATION.--Lat 43°08'55", long 70°57'56", Strafford County, Hydrologic Unit 01060003, on left bank, 200 ft upstream
from highway bridge, 2.5 mi west of Durham, and 7 mi upstream from mouth.
DRAINAGE AREA.--12.l mi².
PERIOD OF RECORD.--Discharge records: October 1934 to current year. October and November 1934 monthly discharge only,
published in WSP 1301.
GAGE.--Water-stage recorder and concrete control. Elevation of gage is 70 ft above sea level, from topographic map.
Prior to October 1, 1964, at datum 1.00 ft higher.
REMARKS.--Records good except those for estimated daily discharges and those above 180 ft³/s, which are fair, and those
above 680 ft³/s, which are poor.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 170 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
Oct. 21 1815 * 1,160 * 6.67 Apr. 19 0815 418 4.65
Minimum daily discharge, 0.59 ft³/s, August 9.
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 1.4 19 38 23 16 46 82 42 8.1 1.4 .80 1.3
2 1.2 17 101 21 15 45 74 37 7.9 1.4 .64 1.2
3 1.4 17 92 22 15 42 78 30 7.4 1.8 .67 1.3
4 1.5 24 60 20 14 39 82 41 7.0 2.2 .77 1.1
5 1.6 17 45 24 26 43 75 30 6.5 1.7 .70 .90
6 1.7 13 39 40 30 65 67 25 5.7 1.4 .65 1.1
7 1.7 13 e36 32 23 53 61 24 5.4 1.4 .71 1.2
8 1.8 15 83 22 18 40 48 24 5.0 1.2 .61 1.3
9 11 20 84 18 15 e30 36 24 4.9 2.3 .59 1.5
10 8.0 25 60 30 e13 e27 29 23 4.3 6.3 .64 1.4
11 6.0 19 47 32 e12 27 28 30 3.9 3.8 .65 1.5
12 4.0 17 44 22 e12 24 27 28 3.8 2.5 .95 6.7
13 3.3 15 49 23 e11 21 63 24 5.0 2.0 1.6 4.8
14 2.7 13 49 19 12 19 53 23 4.7 1.8 2.6 5.2
15 2.3 12 51 15 17 34 40 21 3.7 6.9 1.3 3.4
16 2.0 e11 50 28 15 33 32 25 3.2 4.8 .94 2.3
17 2.1 e11 80 33 13 24 28 22 3.0 3.3 .88 1.6
18 2.0 e11 97 24 13 e20 131 20 3.7 2.5 .84 1.5
19 1.8 e11 81 17 20 e18 359 19 6.5 2.1 .72 1.4
20 83 e13 83 16 35 e18 189 41 4.7 1.7 .62 1.4
21 856 13 56 15 35 22 117 29 3.8 1.9 1.7 1.5
22 480 12 47 15 87 27 82 22 3.2 1.8 9.0 1.3
23 162 18 40 19 72 24 62 19 2.6 1.5 4.6 1.4
24 104 14 40 15 42 20 49 16 2.3 1.3 2.7 1.4
25 74 15 61 32 28 19 41 17 2.2 1.3 1.7 1.5
26 53 50 43 35 e30 81 35 17 2.3 1.1 1.3 1.3
27 41 55 36 21 49 70 27 14 1.9 1.1 1.1 1.3
28 36 36 32 25 57 65 60 12 1.7 1.1 1.3 1.2
29 31 28 35 25 --- 72 78 e9.9 1.5 .84 1.3 1.7
30 23 26 40 18 --- 102 54 8.8 1.5 .75 1.3 1.6
31 22 --- 26 16 --- 109 --- 8.5 --- .84 1.2 ---
TOTAL 2022.5 580 1725 717 745 1279 2187 726.2 127.4 66.03 45.08 56.30
MEAN 65.2 19.3 55.6 23.1 26.6 41.3 72.9 23.4 4.25 2.13 1.45 1.88
MAX 856 55 101 40 87 109 359 42 8.1 6.9 9.0 6.7
MIN 1.2 11 26 15 11 18 27 8.5 1.5 .75 .59 .90
CFSM 5.39 1.60 4.60 1.91 2.20 3.41 6.02 1.94 .35 .18 .12 .16
IN. 6.22 1.78 5.30 2.20 2.29 3.93 6.72 2.23 .39 .20 .14 .17
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 1997, BY WATER YEAR (WY)
MEAN 7.56 18.5 22.7 19.3 21.4 47.7 49.7 24.9 11.7 5.06 3.52 4.32
MAX 65.2 62.7 55.6 58.1 84.5 122 104 97.5 47.5 33.7 22.7 52.6
(WY) 1997 1952 1997 1958 1981 1936 1956 1954 1982 1938 1991 1954
MIN .89 1.58 2.73 2.25 3.47 13.5 15.2 8.85 2.07 .65 .61 .58
(WY) 1942 1979 1966 1981 1980 1967 1985 1957 1936 1949 1949 1995
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1935 - 1997
ANNUAL TOTAL 11593.74 10276.51
ANNUAL MEAN 31.7 28.2 19.7
HIGHEST ANNUAL MEAN 32.3 1952
LOWEST ANNUAL MEAN 9.09 1965
HIGHEST DAILY MEAN 856 Oct 21 856 Oct 21 856 Oct 21 1996
LOWEST DAILY MEAN .84 Sep 1 .59 Aug 9 .26 Sep 13 1995
ANNUAL SEVEN-DAY MINIMUM 1.0 Sep 6 .65 Aug 5 .29 Sep 10 1995
INSTANTANEOUS PEAK FLOW 1160 Oct 21 1160 Oct 21 1996
INSTANTANEOUS PEAK STAGE 6.67 Oct 21 8.45 Mar 19 1936
INSTANTANEOUS LOW FLOW .42 Aug 8 .13 Jun 20 1993
ANNUAL RUNOFF (CFSM) 2.62 2.33 1.62
ANNUAL RUNOFF (INCHES) 35.64 31.59 22.07
10 PERCENT EXCEEDS 65 62 48
50 PERCENT EXCEEDS 17 17 10
90 PERCENT EXCEEDS 1.4 1.3 1.2
e Estimated.
Back to station selections
Back to District Home Page
To WRD National Home Page
To USGS National Home Page
Comments and suggestions can be sent to
NH-VT Webmaster