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USGS Daily Statistics for New Hampshire

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To view real-time groundwater levels in New Hampshire. click here

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 01092000 MERRIMACK R NR GOFFS FALLS, BELOW MANCHESTER, NH


Hillsborough County, New Hampshire
Hydrologic Unit Code 01070002
Latitude  42°56'53", Longitude  71°27'50" NAD27
Drainage area 3,092  square miles
Gage datum 108.58 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 1936-10-01 -> 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 5,290 4,610 5,550 12,800 11,700 6,130 3,930 2,730 2,070 2,550 4,720 6,070
2 5,220 4,480 5,450 13,500 11,600 6,080 3,870 2,580 2,160 2,730 4,710 6,090
3 5,080 4,430 5,540 14,100 11,300 6,270 3,850 2,530 2,060 2,830 4,780 6,090
4 4,920 4,700 5,510 14,600 11,100 6,070 3,640 2,550 1,890 2,720 5,170 5,840
5 4,850 4,850 5,430 14,800 10,900 5,720 3,490 2,420 1,830 2,610 5,030 5,580
6 4,760 4,800 5,410 15,300 10,300 5,470 3,350 2,330 1,770 2,520 4,750 5,470
7 4,800 4,710 5,560 15,000 9,700 5,330 3,190 2,260 1,920 2,690 4,610 5,820
8 4,770 4,700 5,820 14,400 9,180 5,270 3,040 2,250 1,960 2,840 4,730 6,210
9 4,720 4,610 6,060 13,900 8,910 5,100 2,930 2,400 1,980 2,870 4,800 5,990
10 4,860 4,350 6,400 13,400 8,770 4,880 2,770 2,440 1,960 2,920 5,020 5,870
11 5,070 4,300 6,510 13,500 8,580 4,690 2,800 2,570 1,980 2,920 5,120 6,000
12 4,990 4,360 6,680 13,700 8,390 4,640 2,820 2,820 2,150 2,900 5,020 6,200
13 5,100 4,380 6,900 13,800 8,480 4,550 2,800 2,690 2,200 2,950 5,030 6,320
14 5,090 4,420 7,350 13,800 8,810 4,640 2,860 2,570 2,200 2,840 5,310 6,170
15 5,000 4,420 7,770 13,900 9,060 4,830 2,920 2,540 2,180 3,060 5,310 6,050
16 5,040 4,460 7,850 14,200 8,880 4,810 2,890 2,400 2,210 3,320 5,190 5,810
17 4,890 4,430 7,890 14,900 8,650 4,620 2,820 2,270 2,140 3,460 5,190 5,510
18 4,660 4,460 8,000 14,700 8,470 4,360 2,650 2,170 2,250 3,500 5,160 5,600
19 4,560 4,450 8,140 14,500 8,300 4,150 2,580 2,150 2,290 3,490 4,880 5,820
20 4,640 4,460 8,660 14,000 8,040 3,990 2,540 2,060 2,350 3,380 4,700 5,650
21 4,670 4,500 8,990 13,700 7,850 3,850 2,600 1,980 2,570 3,690 4,920 5,490
22 4,640 4,810 9,180 13,500 7,660 3,690 2,500 1,920 3,050 4,120 5,020 5,730
23 4,580 5,290 9,430 13,300 7,200 3,630 2,480 1,970 3,140 4,030 5,030 5,860
24 4,690 5,340 9,390 13,100 6,860 3,530 2,670 1,940 2,670 3,940 4,880 6,010
25 4,960 5,590 9,500 13,100 6,880 3,620 2,590 1,870 2,460 4,190 4,840 6,060
26 5,380 5,980 9,740 12,800 6,930 3,620 2,560 1,870 2,390 4,480 5,150 6,260
27 5,730 6,010 10,200 12,700 6,780 3,780 2,380 1,820 2,370 4,480 5,610 6,140
28 5,830 5,850 10,800 12,400 6,500 3,820 2,390 1,710 2,400 4,550 5,870 6,020
29 5,630 6,140 11,400 12,200 6,290 3,860 2,470 1,830 2,400 4,780 6,060 5,980
30 5,240   11,900 12,000 6,150 4,010 2,690 2,060 2,490 4,820 6,120 5,690
31 4,900   12,400   6,160   2,840 2,110   4,770   5,450