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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 01094000 SOUHEGAN RIVER AT MERRIMACK, NH


Hillsborough County, New Hampshire
Hydrologic Unit Code 01070002
Latitude  42°51'27", Longitude  71°30'24" NAD27
Drainage area 171  square miles
Gage datum 159.88 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1908-10-01 -> 2024-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 290 264 393 928 555 257 170 108 92 129 210 311
2 290 250 397 1,030 522 266 165 105 89 104 195 302
3 287 252 387 1,050 492 253 173 96 86 97 203 293
4 292 278 378 1,010 484 257 157 89 83 87 273 287
5 274 292 374 965 473 237 144 126 70 94 258 306
6 267 277 396 960 461 230 137 109 64 88 216 337
7 284 267 438 969 404 234 127 97 82 100 202 369
8 284 282 465 937 384 234 112 93 90 101 223 354
9 282 273 520 819 381 228 135 100 89 99 228 344
10 332 238 528 765 381 261 136 99 88 93 241 353
11 321 246 450 750 365 260 121 95 81 86 261 373
12 307 261 469 753 373 232 111 96 117 94 223 379
13 321 254 551 818 386 230 113 94 118 94 239 363
14 316 268 575 766 406 224 104 95 96 89 294 334
15 301 283 641 727 423 228 98 89 104 116 271 396
16 293 287 654 751 426 225 92 79 86 186 235 331
17 280 283 638 813 420 207 98 75 91 151 237 292
18 254 283 678 748 409 229 93 75 106 149 239 302
19 270 295 795 705 379 204 103 74 120 146 232 348
20 265 269 694 648 364 203 103 78 112 153 248 304
21 248 270 695 619 349 188 96 70 155 148 252 303
22 264 297 713 592 357 204 99 65 171 130 233 319
23 293 325 684 611 353 189 104 73 106 124 245 305
24 307 318 679 625 336 187 113 81 90 139 239 337
25 326 356 708 589 319 236 115 77 86 179 260 332
26 368 411 762 553 320 220 96 72 91 190 289 333
27 362 403 808 574 323 185 88 78 112 173 301 336
28 360 389 883 552 303 172 106 70 102 170 279 332
29 318 341 843 584 294 181 113 88 93 181 312 312
30 277   873 565 267 181 133 84 104 199 307 299
31 266   900   236   121 81   227   295