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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
1 290 267 393 927 553 257 168 107 92 129 210 311
2 290 253 397 1,030 520 265 164 104 88 104 195 302
3 287 255 390 1,040 490 251 172 95 85 97 203 293
4 292 280 382 1,010 482 255 156 89 82 87 273 287
5 274 293 377 964 471 236 143 126 70 94 258 306
6 267 279 399 959 459 229 136 109 64 88 216 337
7 284 268 448 968 403 233 126 97 82 100 202 369
8 284 283 483 937 383 233 112 94 90 101 223 354
9 282 274 529 822 381 227 134 100 88 99 228 344
10 332 239 540 769 381 260 135 99 87 93 241 353
11 321 248 466 752 364 259 120 95 81 86 261 373
12 307 263 478 760 372 231 110 96 116 94 223 379
13 321 256 556 834 384 228 112 94 117 94 239 363
14 316 269 579 774 404 223 103 95 95 89 294 334
15 301 283 643 732 421 227 98 88 103 116 271 396
16 293 288 655 753 424 223 91 79 86 186 235 331
17 280 284 638 812 419 206 98 75 91 151 237 292
18 254 283 676 747 407 227 93 75 106 149 239 302
19 270 295 791 705 378 202 102 74 120 146 232 348
20 265 269 691 647 363 202 103 78 112 153 248 304
21 248 270 691 618 347 187 95 70 155 148 252 303
22 264 297 709 591 355 202 99 65 171 130 233 319
23 293 324 681 609 351 189 104 73 106 124 245 305
24 307 318 687 623 334 186 112 80 90 139 239 337
25 326 355 712 586 317 235 114 76 86 179 260 332
26 368 409 763 551 318 219 95 72 91 190 289 333
27 362 401 807 571 321 184 87 78 112 173 301 336
28 360 388 885 550 302 171 105 70 102 170 279 332
29 318 347 852 581 293 180 112 88 93 181 312 312
30 282   879 562 267 180 132 84 104 199 307 299
31 270   902   237   120 81   227   295