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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 34,600 31,400 15,000 13,800 10,200 8,240 10,200 21,400 20,300
2 18,200 13,600 15,100 36,700 31,900 14,700 14,200 9,970 8,430 11,200 19,500 22,000
3 17,800 13,000 15,900 36,800 30,000 14,300 15,900 9,650 8,720 11,600 18,700 22,300
4 17,800 13,600 15,900 36,900 28,400 13,900 15,800 9,590 7,830 11,300 17,800 21,800
5 16,900 15,000 15,400 38,200 27,100 13,200 14,200 10,400 7,070 10,400 16,700 20,000
6 16,600 15,600 15,300 36,700 26,400 12,800 13,000 10,400 7,760 9,480 15,600 17,700
7 16,500 16,100 17,100 34,300 25,100 14,200 11,300 9,760 8,630 8,040 15,400 16,300
8 16,500 15,200 19,500 34,200 23,100 14,800 9,950 9,630 9,510 7,880 14,700 17,100
9 16,700 13,600 20,300 35,400 21,700 13,900 10,100 9,210 9,530 11,000 14,500 17,200
10 16,900 12,500 21,300 34,600 20,400 12,500 11,000 9,100 8,640 11,400 14,000 16,600
11 17,600 12,900 21,000 35,000 19,300 12,900 13,300 9,580 7,710 9,250 14,100 17,100
12 17,800 12,400 21,600 36,400 19,000 14,300 13,500 10,100 7,240 8,970 13,600 20,000
13 19,700 12,000 21,400 37,600 18,800 14,400 13,400 9,780 7,200 8,750 14,100 21,900
14 23,400 12,500 22,600 39,900 18,200 14,500 13,000 9,820 7,670 8,390 15,100 20,400
15 24,100 12,300 23,300 41,100 19,100 13,800 12,100 9,200 7,160 10,700 15,000 19,100
16 22,400 12,500 23,300 41,900 19,900 12,600 11,300 7,850 6,790 13,700 15,300 17,700
17 19,800 12,300 23,200 42,800 20,800 11,700 10,600 7,510 6,020 14,600 16,000 17,600
18 17,700 13,200 22,700 41,300 21,800 11,100 10,900 7,810 6,600 14,400 17,500 18,500
19 18,000 14,600 23,100 39,100 21,100 11,500 11,700 7,690 8,190 13,300 17,000 20,500
20 17,700 14,100 23,700 36,900 20,000 11,800 11,800 7,210 7,200 12,600 16,000 20,100
21 17,000 13,300 23,400 36,000 19,700 10,800 11,100 7,150 6,220 12,700 16,700 19,000
22 16,100 13,000 23,000 34,900 18,200 10,500 10,900 7,550 5,810 13,500 15,900 19,900
23 15,200 13,700 23,000 34,500 17,300 10,200 11,800 8,830 6,330 12,900 15,700 20,200
24 14,600 14,500 24,200 35,600 17,100 10,900 12,700 8,130 6,790 13,400 15,600 22,600
25 15,900 16,200 23,600 35,200 16,800 10,300 12,400 7,580 6,940 14,100 15,300 24,600
26 17,100 18,600 23,300 32,800 17,000 10,900 11,900 6,510 6,880 16,200 14,700 26,000
27 17,700 18,400 24,000 32,400 17,700 11,400 11,100 6,160 6,910 17,700 15,000 25,600
28 16,700 17,000 25,100 31,600 17,000 11,900 10,200 6,830 6,670 19,500 16,300 23,900
29 15,200 18,800 28,300 30,400 16,400 13,900 9,910 9,790 8,100 21,300 17,600 22,600
30 14,300   31,800 30,500 16,800 14,600 10,500 10,500 9,590 22,500 18,600 22,300
31 14,100   34,000   16,300   10,900 9,250   22,900   20,800