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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 -> 2023-09-30)

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
1 288 264 393 928 555 257 170 108 91 125 208 311
2 288 250 397 1,030 522 266 165 105 88 101 193 302
3 286 252 387 1,050 492 253 173 96 86 95 202 293
4 290 278 378 1,010 484 257 157 89 82 86 273 285
5 272 292 374 965 473 237 144 126 70 93 258 302
6 266 277 396 960 461 230 137 109 64 87 216 336
7 284 267 438 969 404 234 127 97 82 98 201 369
8 283 282 465 937 384 234 112 93 90 99 223 355
9 281 273 520 819 381 228 135 100 89 96 229 345
10 323 238 528 765 381 261 136 99 88 91 241 354
11 302 246 450 750 365 260 121 95 80 85 262 366
12 296 261 469 753 373 232 111 96 110 92 223 367
13 310 254 551 818 386 230 113 94 113 92 240 357
14 294 268 575 766 406 224 104 95 92 88 295 330
15 289 283 641 727 423 228 98 88 101 115 272 394
16 285 287 654 751 426 225 92 78 84 186 235 329
17 274 283 638 813 420 207 98 74 89 151 237 291
18 249 283 678 748 409 229 93 74 105 149 240 291
19 266 295 795 705 379 204 103 73 116 145 233 308
20 262 269 694 648 364 203 103 77 107 153 248 282
21 245 270 695 619 349 188 96 69 153 147 253 290
22 262 297 713 592 357 204 99 64 170 127 233 311
23 292 325 684 611 353 189 104 73 105 121 243 298
24 306 318 679 625 336 187 113 80 88 137 236 332
25 324 356 708 589 319 236 115 76 85 178 259 328
26 363 411 762 553 320 220 96 70 90 190 289 329
27 353 403 808 574 323 185 88 77 112 173 301 333
28 354 389 883 552 303 172 106 68 102 169 277 329
29 312 341 843 584 294 181 113 87 92 180 311 308
30 277   873 565 267 181 133 83 100 198 307 295
31 266   900   236   121 80   224   292