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USGS Surface-Water 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 01085500 CONTOOCOOK R BL HOPKINTON DAM AT W HOPKINTON, NH


Merrimack County, New Hampshire
Hydrologic Unit Code 01070003
Latitude  43°11'34", Longitude  71°44'52" NAD27
Drainage area 427  square miles
Gage datum 355.15 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 1962-10-01 -> 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
1 854 789 914 1,790 1,440 688 550 403 289 343 885 932
2 810 774 903 1,930 1,360 660 528 392 256 382 834 968
3 820 786 898 2,090 1,320 689 565 374 236 395 758 962
4 813 868 895 2,150 1,270 650 559 320 229 415 712 923
5 816 914 866 2,270 1,190 668 508 312 235 424 674 877
6 769 897 860 2,330 1,130 738 475 287 247 416 661 855
7 736 869 855 2,320 1,040 796 432 278 288 390 681 864
8 683 793 846 2,290 970 794 382 253 311 348 701 897
9 668 738 924 2,200 929 785 361 246 320 359 743 891
10 704 679 983 2,100 884 718 372 253 314 366 737 940
11 744 667 981 2,050 858 693 388 256 296 406 771 1,000
12 778 673 1,040 1,990 861 663 358 268 288 468 735 1,020
13 830 711 1,130 1,980 863 662 396 276 283 497 738 1,010
14 856 723 1,180 2,020 905 652 443 290 262 485 753 995
15 868 715 1,160 1,970 907 559 441 287 252 435 751 998
16 819 715 1,200 1,820 907 531 382 267 230 443 747 990
17 777 719 1,330 1,850 907 511 343 240 222 508 769 945
18 748 748 1,450 1,880 910 494 353 243 215 588 802 967
19 743 752 1,460 1,790 918 458 374 282 265 592 777 925
20 731 740 1,500 1,730 945 432 393 270 265 594 746 873
21 717 736 1,520 1,730 955 432 370 255 255 612 749 857
22 713 748 1,490 1,680 908 406 340 267 249 580 759 889
23 710 769 1,490 1,570 842 421 322 265 226 529 763 941
24 695 797 1,530 1,590 813 459 331 295 240 536 729 996
25 726 877 1,600 1,660 867 433 374 321 262 546 727 1,030
26 805 917 1,660 1,620 955 436 364 294 282 542 760 1,060
27 884 926 1,690 1,590 949 432 340 242 308 611 813 1,070
28 897 973 1,770 1,560 875 446 318 216 348 694 844 1,120
29 896 1,100 1,830 1,560 813 511 314 242 353 770 853 1,120
30 858   1,780 1,510 786 557 368 317 347 851 895 1,050
31 814   1,760   727   406 324   901   929