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USGS Daily Statistics for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


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 01170500 CONNECTICUT RIVER AT MONTAGUE CITY, MA


Franklin County, Massachusetts
Hydrologic Unit Code 01080201
Latitude  42°34'48.8", Longitude  72°34'28.2" NAD83
Drainage area 7,860  square miles
Contributing drainage area 7,860  square miles
Gage datum 99.32 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 1903-10-01 -> 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 13,000 11,800 15,100 38,000 34,400 14,600 10,900 7,930 6,240 8,870 14,300 15,800
2 13,000 11,100 15,200 38,200 33,600 14,000 11,400 8,030 6,140 9,050 13,900 16,900
3 12,800 10,900 14,800 36,600 32,300 14,100 11,800 7,150 5,890 9,090 14,300 17,100
4 13,200 10,800 15,000 35,700 31,000 13,600 10,700 7,500 5,910 8,450 15,400 16,900
5 13,000 10,500 14,500 35,500 30,000 12,900 10,500 8,380 5,790 8,170 15,500 15,500
6 12,900 10,800 14,100 35,400 28,500 12,600 9,770 7,710 6,020 7,750 14,400 15,000
7 12,600 10,600 15,100 36,700 27,000 14,200 8,690 7,820 6,180 7,320 14,000 14,600
8 13,100 9,790 15,900 38,500 25,100 13,600 8,130 7,420 6,490 8,060 13,400 15,000
9 13,700 9,440 16,800 39,200 23,600 12,700 8,990 7,190 6,080 9,550 13,000 14,500
10 13,500 9,640 18,200 38,300 22,800 12,100 9,230 7,390 6,040 8,380 13,500 13,800
11 13,400 9,380 18,800 38,000 22,300 12,500 10,300 7,690 5,960 7,770 12,700 14,600
12 13,500 9,590 18,200 38,600 22,700 13,000 10,100 7,860 5,910 7,390 12,500 15,700
13 14,500 9,950 18,000 38,600 22,300 13,000 10,000 7,720 6,400 7,490 12,700 15,700
14 14,800 9,910 19,300 40,400 21,600 13,200 9,550 7,520 6,490 7,440 12,800 14,800
15 14,500 10,000 20,300 41,000 21,700 12,600 8,920 6,580 6,720 8,770 12,500 14,700
16 13,700 10,300 21,300 41,800 20,900 12,000 8,960 6,110 6,660 9,630 12,600 14,400
17 13,200 10,900 22,300 41,800 21,200 11,400 8,860 6,290 7,230 9,670 13,100 14,200
18 12,800 11,200 21,400 40,500 21,800 11,700 8,860 6,530 7,360 9,620 13,400 15,100
19 13,600 10,900 21,300 38,800 20,600 11,800 8,550 6,250 7,590 9,890 13,000 16,000
20 14,000 10,300 21,200 38,100 21,300 11,100 7,980 5,980 6,830 9,860 13,400 15,100
21 13,800 10,100 21,600 37,800 20,300 10,900 7,910 5,810 6,200 10,400 13,300 13,900
22 13,700 10,500 22,400 37,600 19,400 10,000 7,910 6,140 6,290 11,700 12,600 14,400
23 13,500 11,400 23,600 38,100 18,700 10,400 8,170 6,780 6,210 11,500 12,500 14,400
24 13,700 12,000 24,300 38,800 18,100 9,940 8,120 6,390 6,500 11,800 12,600 15,700
25 14,400 13,700 24,100 37,600 17,200 9,660 8,090 6,050 6,190 12,700 12,600 16,500
26 14,700 14,900 25,100 36,100 16,800 9,890 7,770 5,770 6,170 13,500 12,300 17,200
27 14,300 14,800 28,500 35,100 16,100 9,840 7,590 5,870 6,300 13,500 12,700 16,500
28 13,600 14,400 33,100 34,100 15,800 10,300 7,500 5,970 6,530 13,900 13,900 14,900
29 13,100 17,200 36,000 34,300 15,900 10,700 7,260 6,870 6,980 15,100 14,400 14,900
30 12,300   38,600 34,400 15,700 10,900 7,900 7,000 7,840 15,100 14,900 14,300
31 12,100   38,800   15,000   7,440 6,590   15,000   13,900