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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 01172010 CONNECTICUT R AT I-391 BRIDGE AT HOLYOKE, MA


Hampden County, Massachusetts
Hydrologic Unit Code 01080201
Latitude  42°11'29.29", Longitude  72°36'33.52" NAD83
Drainage area 8,332  square miles
Gage datum 32.42 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 2002-10-01 -> 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 18,800 14,300 16,000 34,500 32,000 15,300 13,800 10,200 8,240 10,200 21,400 20,300
2 18,200 13,600 15,100 36,700 32,500 15,000 14,200 9,970 8,430 11,200 19,500 22,000
3 17,800 13,000 15,900 36,900 30,500 14,600 15,900 9,650 8,720 11,600 18,700 22,300
4 17,800 13,600 15,900 36,700 28,900 14,200 15,800 9,590 7,830 11,300 17,800 21,800
5 16,900 15,000 15,400 38,200 27,500 13,500 14,200 10,400 7,070 10,400 16,700 20,000
6 16,600 15,600 15,300 36,800 26,500 13,100 13,000 10,400 7,760 9,480 15,600 17,700
7 16,500 16,100 17,100 34,400 24,900 14,600 11,300 9,760 8,630 8,040 15,400 16,300
8 16,500 15,200 19,500 34,200 22,800 15,200 9,950 9,630 9,510 7,880 14,700 17,100
9 16,700 13,600 20,300 35,300 21,400 14,300 10,100 9,210 9,530 11,000 14,500 17,200
10 16,900 12,500 21,300 34,300 20,200 12,700 11,000 9,100 8,640 11,400 14,000 16,600
11 17,600 12,900 21,000 34,300 19,200 13,100 13,300 9,580 7,710 9,250 14,100 17,100
12 17,800 12,400 20,000 35,300 19,000 14,500 13,500 10,100 7,240 8,970 13,600 20,000
13 19,700 12,000 20,300 35,800 19,000 14,800 13,400 9,780 7,200 8,750 14,100 21,900
14 23,400 12,500 21,600 38,200 18,300 14,800 13,000 9,820 7,670 8,390 15,100 20,400
15 24,100 12,300 22,600 40,100 19,300 14,000 12,100 9,200 7,160 10,700 15,000 19,100
16 22,400 12,500 22,400 41,600 20,200 12,900 11,300 7,850 6,790 13,700 15,300 17,700
17 19,800 12,300 22,200 42,800 20,900 12,000 10,600 7,510 6,020 14,600 16,000 17,600
18 17,700 13,200 22,000 41,600 22,100 11,400 10,900 7,810 6,600 14,400 17,500 18,500
19 18,000 14,600 22,600 39,400 21,300 11,800 11,700 7,690 8,190 13,300 17,000 20,500
20 17,700 14,100 23,400 37,200 20,300 11,800 11,800 7,210 7,200 12,600 16,000 20,100
21 17,000 13,300 23,300 36,400 20,100 10,800 11,100 7,150 6,220 12,700 16,700 19,000
22 16,100 13,000 22,900 35,300 18,400 10,500 10,900 7,550 5,810 13,500 15,900 19,900
23 15,200 13,700 22,800 35,100 17,600 10,200 11,800 8,830 6,330 12,900 15,700 20,200
24 14,600 14,500 23,600 36,400 17,200 10,900 12,700 8,130 6,790 13,400 15,600 22,600
25 15,900 16,200 23,100 36,000 17,200 10,300 12,400 7,580 6,940 14,100 15,300 24,600
26 17,100 18,600 23,000 33,500 17,500 10,900 11,900 6,510 6,880 16,200 14,700 26,000
27 17,700 18,400 23,600 33,200 18,100 11,400 11,100 6,160 6,910 17,700 15,000 25,600
28 16,700 17,000 24,700 32,400 17,300 11,900 10,200 6,830 6,670 19,500 16,300 23,900
29 15,200 18,800 27,400 31,200 16,500 13,900 9,910 9,790 8,100 21,300 17,600 22,600
30 14,300   31,100 31,100 17,000 14,600 10,500 10,500 9,590 22,500 18,600 22,300
31 14,100   33,600   16,600   10,900 9,250   22,900   20,800