PISCATAQUA RIVER BASIN
01073587 EXETER RIVER AT HAIGH ROAD NEAR BRENTWOOD, NH
LOCATION.--Lat 42°59'04", long 71°02'20", Rockingham County, Hydrologic Unit 01060003, on right bank, 10 ft downstream
of Haigh Road bridge over the Exeter River, 0.8 mi upstream from mouth of the Little River, 1.3 mi southwest of
Marshall Corner, 1.8 mi east of Brentwood, and 3.4 mi north of Kingston.
DRAINAGE AREA.--63.5 mi².
PERIOD OF RECORD.--Discharge records: June 27, 1996 to current year.
GAGE.--Water-stage recorder. Datum of gage is 60.16 ft above sea level.
REMARKS.--Records good except those for estimated daily discharges, which are fair. Low flow regulation by power plant
upstream.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 500 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
July 14 1315 * 204 * 5.55
Minimum daily discharge, 0.90 ft³/s, September 1.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
DAILY MEAN VALUE
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- --- --- --- --- --- --- --- 3.1 17 .90
2 --- --- --- --- --- --- --- --- --- 20 19 1.2
3 --- --- --- --- --- --- --- --- --- 1.9 9.9 2.1
4 --- --- --- --- --- --- --- --- --- 2.0 20 1.2
5 --- --- --- --- --- --- --- --- --- 5.3 7.7 1.1
6 --- --- --- --- --- --- --- --- --- 3.3 11 1.1
7 --- --- --- --- --- --- --- --- --- 6.9 7.3 8.9
8 --- --- --- --- --- --- --- --- --- 33 10 1.8
9 --- --- --- --- --- --- --- --- --- 6.7 1.6 1.3
10 --- --- --- --- --- --- --- --- --- 17 8.0 1.1
11 --- --- --- --- --- --- --- --- --- 2.3 11 .99
12 --- --- --- --- --- --- --- --- --- 13 1.3 .94
13 --- --- --- --- --- --- --- --- --- 48 1.3 8.6
14 --- --- --- --- --- --- --- --- --- 142 1.4 2.7
15 --- --- --- --- --- --- --- --- --- 163 1.5 1.1
16 --- --- --- --- --- --- --- --- --- 139 16 6.1
17 --- --- --- --- --- --- --- --- --- 107 2.2 5.5
18 --- --- --- --- --- --- --- --- --- 87 1.2 47
19 --- --- --- --- --- --- --- --- --- 70 1.1 51
20 --- --- --- --- --- --- --- --- --- 45 1.1 40
21 --- --- --- --- --- --- --- --- --- 66 1.1 29
22 --- --- --- --- --- --- --- --- --- 8.9 8.0 26
23 --- --- --- --- --- --- --- --- --- 36 3.8 34
24 --- --- --- --- --- --- --- --- --- 23 1.0 27
25 --- --- --- --- --- --- --- --- --- 39 .97 27
26 --- --- --- --- --- --- --- --- --- 38 .94 26
27 --- --- --- --- --- --- --- --- e3.1 27 .97 23
28 --- --- --- --- --- --- --- --- 27 7.5 .98 22
29 --- --- --- --- --- --- --- --- 2.7 36 6.3 24
30 --- --- --- --- --- --- --- --- 22 17 2.9 22
31 --- --- --- --- --- --- --- --- --- 15 .93 ---
TOTAL --- --- --- --- --- --- --- --- --- 1228.9 177.49 444.63
MEAN --- --- --- --- --- --- --- --- --- 39.6 5.73 14.8
MAX --- --- --- --- --- --- --- --- --- 163 20 51
MIN --- --- --- --- --- --- --- --- --- 1.9 .93 .90
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 1996, BY WATER YEAR (WY)
MEAN --- --- --- --- --- --- --- --- --- 39.6 5.73 14.8
MAX --- --- --- --- --- --- --- --- --- 39.6 5.73 14.8
(WY) --- --- --- --- --- --- --- --- --- 1996 1996 1996
MIN --- --- --- --- --- --- --- --- --- 39.6 5.73 14.8
(WY) --- --- --- --- --- --- --- --- --- 1996 1996 1996
01073587 EXETER RIVER AT HAIGH ROAD NEAR BRENTWOOD, NH--Continued
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 500 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
Oct. 22 0430 * 3060 * 11.44 Apr.20 0400 837 8.19
Dec. 20 2200 542 6.90
Minimum daily discharge, 0.73 ft³/s, September 10.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUE
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 19 213 164 e203 94 166 361 251 59 7.4 3.3 1.0
2 3.9 188 242 e190 89 158 339 215 57 7.4 2.6 1.0
3 21 168 348 e158 85 159 333 192 53 7.9 1.7 1.0
4 17 152 314 e145 83 152 355 193 52 7.3 1.6 .79
5 2.1 141 280 155 104 137 372 191 46 6.9 1.6 .77
6 7.5 127 256 157 138 169 358 160 36 6.1 1.5 .81
7 4.7 117 232 158 143 216 338 116 40 6.1 1.4 .76
8 27 169 259 e133 132 196 310 147 38 6.1 1.2 .74
9 48 130 293 e127 121 e170 272 134 34 6.9 1.2 .77
10 44 165 322 e111 109 e170 236 131 31 7.9 1.1 .73
11 52 165 283 145 97 155 206 130 29 6.6 1.0 .89
12 41 150 256 e150 89 138 190 122 25 6.7 1.1 4.6
13 38 95 255 e140 84 e125 195 112 17 6.8 1.8 5.0
14 46 118 259 117 98 120 191 109 17 7.1 1.7 4.9
15 39 117 262 100 90 152 190 104 5.0 12 1.2 3.8
16 31 103 271 126 94 158 171 101 3.7 22 1.1 2.7
17 28 101 323 e168 88 e140 157 100 16 11 .98 1.9
18 32 97 448 e135 84 e125 220 95 18 6.0 .93 1.6
19 26 97 491 e117 96 e116 648 92 32 5.9 .90 1.4
20 229 101 520 e104 144 120 792 136 34 5.7 .78 1.2
21 1560 100 490 e92 162 117 665 160 28 5.7 1.8 1.0
22 2630 95 392 82 223 132 509 140 22 9.5 3.5 1.4
23 1520 92 341 88 288 147 399 126 17 3.8 1.6 1.0
24 985 88 293 e88 269 137 314 112 15 3.1 1.8 .82
25 731 85 334 109 227 128 266 104 12 2.7 1.4 .79
26 580 115 336 145 196 179 230 102 11 2.7 1.1 .94
27 442 188 252 143 177 261 197 94 25 2.8 1.1 1.1
28 360 e176 238 127 176 263 242 85 48 2.9 1.1 1.0
29 313 e165 223 132 --- 266 283 77 11 3.5 1.2 1.4
30 274 e153 224 e120 --- 298 302 70 7.6 3.7 1.3 1.6
31 243 --- 218 104 --- 357 --- 64 --- 3.7 1.1 ---
TOTAL 10394.2 3971 9419 4069 3780 5327 9641 3965 839.3 203.9 45.69 47.41
MEAN 335 132 304 131 135 172 321 128 28.0 6.58 1.47 1.58
MAX 2630 213 520 203 288 357 792 251 59 22 3.5 5.0
MIN 2.1 85 164 82 83 116 157 64 3.7 2.7 .78 .73
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 1997, BY WATER YEAR (WY)
MEAN 335 132 304 131 135 172 321 128 28.0 23.1 3.60 8.20
MAX 335 132 304 131 135 172 321 128 28.0 39.6 5.73 14.8
(WY) 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996 1996
MIN 335 132 304 131 135 172 321 128 28.0 6.58 1.47 1.58
(WY) 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997
SUMMARY STATISTICS FOR 1997 WATER YEAR WATER YEARS 1996 - 1997
ANNUAL TOTAL 51702.50
ANNUAL MEAN 142 142
HIGHEST ANNUAL MEAN 142 1997
LOWEST ANNUAL MEAN 142 1997
HIGHEST DAILY MEAN 2630 Oct 22 2630 Oct 22 1996
LOWEST DAILY MEAN .73 Sep 10 .73 Sep 10 1997
ANNUAL SEVEN-DAY MINIMUM .77 Sep 4 .77 Sep 4 1997
INSTANTANEOUS PEAK FLOW 3060 Oct 22 3060 Oct 22 1996
INSTANTANEOUS PEAK STAGE 11.44 Oct 22 11.44 Oct 22 1996
10 PERCENT EXCEEDS 305 272
50 PERCENT EXCEEDS 104 64
90 PERCENT EXCEEDS 1.4 1.1
e Estimated.
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