ANDROSCOGGIN RIVER BASIN
01052500 DIAMOND RIVER NEAR WENTWORTH LOCATION, NH
LOCATION.--Lat 44°52'40", long 71°03'25" Coos County, Hydrologic Unit 01040001, on left bank 1.0 mi
upstream from mouth and 1.6 mi north of Wentworth Location.
DRAINAGE AREA.--152 mi².
PERIOD OF RECORD.--Discharge records: July 1941 to current year.
Water-quality records: Water year 1954.
REVISED RECORDS.--WDR ME-81-1: Drainage area.
GAGE.--Water-stage recorder. Elevation of gage is 1,259 ft above sea level.
REMARKS.--Records good except for periods of ice effect, Nov. 25 to Dec. 1, Dec. 9-17, 21-23, and Jan. 1 to Apr. 6,
which are fair. Satellite gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 8,630 ft³/s, June 16, 1943, gage height, 10.66 ft, from rating
curve extended above 4,300 ft³/s; maximum gage height, 12.23 ft, February 21, 1981 (ice jam); minimum discharge,
6.8 ft³/s, August 27, 28, 1949, September 1, 1952, gage height, 0.81 ft.
EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 3,600 ft³/s and maximum (*):
Discharge Gage height Discharge Gage height
Date Time (ft³/s) (ft) Date Time (ft³/s) (ft)
Dec. 2 1300 4,030 7.60 May 2 0345 * 4,090 * 7.64
Minimum discharge, 44 ft³/s, August 8, gage height, 1.43 ft.
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
1 111 432 e150 e202 e123 e300 e335 2330 435 132 54 282
2 80 297 2460 e196 e120 e284 e277 3920 378 116 50 263
3 69 251 2240 e241 e118 e660 e266 2280 312 180 121 451
4 88 213 745 e233 e116 e520 e288 1420 274 730 106 377
5 74 206 503 e221 e114 e370 e315 1180 249 403 80 270
6 64 239 388 e325 e115 e310 e540 1310 220 244 70 194
7 59 267 319 e280 e113 e265 1330 1440 195 168 53 162
8 56 305 248 e215 e108 e230 1680 991 175 140 45 149
9 189 465 e271 e188 e103 e245 957 856 157 652 70 130
10 295 917 e266 e187 e102 e226 594 834 140 872 84 118
11 414 545 e238 e186 e101 e208 499 927 124 350 109 115
12 224 373 e215 e180 e102 e190 447 996 128 237 254 129
13 150 293 e200 e173 e97 e197 424 1340 226 189 321 129
14 126 217 e191 e168 e95 e228 401 1580 350 231 900 181
15 117 178 e187 e162 e94 e200 343 1500 212 292 317 140
16 101 152 e184 e160 e92 e222 382 1970 145 306 187 109
17 91 185 e191 e164 e91 e250 597 1780 119 206 178 94
18 83 194 346 e159 e92 e190 1110 1430 130 157 162 93
19 78 201 410 e150 e110 e212 1280 1200 446 131 111 87
20 74 189 311 e142 e240 e160 1330 1070 298 168 89 96
21 83 171 e218 e136 e212 e147 1220 1040 638 149 88 208
22 799 154 e200 e133 e320 e148 1150 1130 2400 116 347 157
23 840 140 e199 e138 e550 e136 1410 1330 1470 99 420 119
24 470 112 257 e148 e330 e131 1430 940 583 88 267 156
25 358 e115 641 e139 e222 e129 1170 799 398 79 185 129
26 264 e109 403 e141 e219 e135 1550 744 456 72 137 107
27 208 e115 330 e136 e227 e142 1950 640 297 67 110 98
28 257 e106 280 e131 e335 e130 2210 559 224 66 405 90
29 350 e99 308 e129 --- e185 1590 542 183 83 625 130
30 260 e108 540 e124 --- e420 1220 498 153 76 760 343
31 466 --- 328 e121 --- e440 --- 477 --- 61 385 ---
TOTAL 6898 7348 13767 5408 4661 7610 28295 39053 11515 6860 7090 5106
MEAN 223 245 444 174 166 245 943 1260 384 221 229 170
MAX 840 917 2460 325 550 660 2210 3920 2400 872 900 451
MIN 56 99 150 121 91 129 266 477 119 61 45 87
CFSM 1.46 1.61 2.92 1.15 1.10 1.62 6.21 8.29 2.53 1.46 1.50 1.12
IN. 1.69 1.80 3.37 1.32 1.14 1.86 6.92 9.56 2.82 1.68 1.74 1.25
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1997, BY WATER YEAR (WY)
MEAN 269 336 229 171 150 279 1064 944 314 168 140 149
MAX 869 733 739 575 783 853 1591 2115 804 703 492 836
(WY) 1991 1964 1974 1995 1981 1946 1954 1972 1943 1996 1988 1954
MIN 40.9 83.2 53.4 53.9 43.4 54.6 403 347 105 35.1 15.0 16.8
(WY) 1953 1979 1979 1948 1942 1967 1972 1986 1963 1952 1952 1952
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1941 - 1997
ANNUAL TOTAL 184082 143611
ANNUAL MEAN 503 393 352
HIGHEST ANNUAL MEAN 524 1996
LOWEST ANNUAL MEAN 225 1965
HIGHEST DAILY MEAN 6700 Apr 24 3920 May 2 7380 Jun 16 1943
LOWEST DAILY MEAN 28 Sep 8 45 Aug 8 6.8 Aug 28 1949
ANNUAL SEVEN-DAY MINIMUM 34 Sep 2 65 Jul 27 9.0 Sep 11 1952
INSTANTANEOUS PEAK FLOW 4090 May 2 8630 Jun 16 1943
INSTANTANEOUS PEAK STAGE 7.64 May 2 12.23 Feb 21 1981
INSTANTANEOUS LOW FLOW 44 Aug 8 6.8 Aug 27 1949
ANNUAL RUNOFF (CFSM) 3.31 2.59 2.31
ANNUAL RUNOFF (INCHES) 45.05 35.15 31.44
10 PERCENT EXCEEDS 1260 1050 850
50 PERCENT EXCEEDS 235 213 159
90 PERCENT EXCEEDS 55 94 51
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