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USGS Surface-Water 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 -> 2020-09-30)

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
1 281 263 395 941 540 257 170 102 90 127 193 306
2 281 249 399 1,040 507 269 164 100 78 102 186 298
3 276 251 387 1,060 482 256 162 93 72 96 197 291
4 283 277 379 1,030 478 260 143 87 75 86 273 284
5 265 284 376 982 467 240 128 126 65 90 259 303
6 259 270 400 977 452 234 126 108 59 82 217 333
7 279 263 440 988 398 238 120 96 79 96 202 367
8 279 279 464 952 381 239 107 92 89 97 225 352
9 278 270 523 828 381 232 131 99 87 95 231 344
10 323 234 532 774 383 264 128 98 85 91 244 356
11 303 241 451 761 367 264 109 94 77 84 266 369
12 298 257 469 767 376 236 99 95 109 93 225 369
13 308 250 551 835 390 233 97 94 112 93 228 356
14 288 265 578 782 412 228 91 95 90 88 288 329
15 286 282 647 743 430 232 89 89 100 115 268 397
16 280 286 661 767 433 228 82 78 83 188 232 330
17 260 278 645 826 427 209 83 74 88 153 233 290
18 238 268 686 760 415 229 79 75 104 149 237 290
19 259 279 805 714 386 205 82 73 116 146 232 309
20 257 260 700 652 370 206 87 72 108 155 249 283
21 241 264 703 626 352 190 84 65 156 149 255 291
22 260 294 723 600 361 207 90 61 172 128 234 313
23 291 315 692 617 358 193 97 68 104 123 244 289
24 306 307 685 624 341 190 109 64 87 139 237 297
25 326 351 710 591 323 241 112 60 83 182 261 298
26 362 410 766 558 325 224 92 61 88 193 292 285
27 346 403 815 580 328 178 85 71 112 170 303 308
28 351 391 893 559 309 167 104 64 102 164 278 313
29 311 341 850 593 299 177 112 85 92 179 314 296
30 275   884 562 271 180 122 81 100 198 310 286
31 264   915   236   108 78   213   286