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USGS Daily Statistics for New Hampshire

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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 01085000 CONTOOCOOK RIVER NEAR HENNIKER, NH


Merrimack County, New Hampshire
Hydrologic Unit Code 01070003
Latitude  43°09'07", Longitude  71°51'28" NAD27
Drainage area 368  square miles
Gage datum 469.70 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 1939-10-01 -> 2025-09-30)

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
1 634 589 730 1,730 1,410 623 425 265 189 260 530 674
2 656 566 722 1,850 1,340 672 373 266 209 257 519 646
3 657 561 737 2,030 1,290 643 344 246 211 271 573 627
4 635 634 744 2,180 1,270 591 334 224 193 256 668 612
5 613 655 743 2,200 1,260 529 325 230 179 235 623 644
6 597 640 766 2,210 1,180 520 317 228 164 245 577 697
7 606 598 805 2,140 1,060 554 282 205 166 252 562 748
8 584 594 835 2,060 970 529 253 191 164 263 599 780
9 560 605 832 1,940 950 489 240 190 184 261 623 776
10 587 576 850 1,900 964 453 291 199 195 241 615 794
11 666 591 871 1,950 924 429 352 204 212 235 593 827
12 649 628 862 1,940 910 409 329 209 257 259 577 829
13 694 604 884 1,970 915 404 322 218 320 266 584 826
14 701 577 1,010 1,960 950 396 335 228 291 261 582 781
15 645 546 1,060 1,920 935 392 326 220 283 262 581 778
16 587 538 1,110 1,880 907 415 341 199 265 293 568 738
17 569 551 1,170 1,860 884 429 331 183 257 345 541 670
18 536 563 1,170 1,860 863 395 316 205 239 365 501 666
19 508 566 1,200 1,830 884 364 353 241 243 342 464 684
20 504 565 1,200 1,790 878 366 318 240 252 325 481 641
21 511 570 1,250 1,710 848 387 273 224 248 327 522 628
22 529 608 1,310 1,600 821 369 244 218 232 322 553 740
23 552 688 1,340 1,570 797 356 232 205 215 307 555 760
24 612 704 1,300 1,600 731 380 237 245 210 305 524 714
25 662 740 1,340 1,570 700 480 229 257 218 364 551 633
26 696 785 1,370 1,550 710 506 210 221 238 393 628 662
27 727 789 1,470 1,520 705 470 194 196 266 426 704 692
28 722 775 1,540 1,490 700 412 198 179 286 428 674 693
29 696 798 1,590 1,430 659 417 212 161 262 420 682 686
30 681   1,600 1,400 588 416 285 158 238 476 692 664
31 630   1,660   565   295 170   546   648