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USGS Surface-Water 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 -> 2023-09-30)

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 18,300 13,900 15,500 34,500 31,800 15,800 13,400 9,470 8,020 9,950 21,400 20,500
2 18,000 13,200 14,800 36,700 31,500 15,400 13,900 9,440 8,220 11,100 19,500 22,400
3 17,600 12,800 15,700 36,900 29,400 15,000 15,400 9,390 8,640 11,700 18,800 22,700
4 17,700 13,400 15,500 36,700 27,800 14,600 14,600 9,550 7,750 11,300 17,800 22,000
5 16,900 14,800 14,800 38,200 26,600 13,900 12,900 10,100 7,020 10,400 16,800 20,000
6 16,600 15,500 14,300 36,800 26,100 13,500 11,900 9,960 7,700 9,500 15,700 17,600
7 16,500 16,000 15,300 34,400 24,700 15,100 10,600 9,430 8,650 7,910 15,500 16,200
8 16,500 15,100 17,000 34,200 22,700 15,700 9,190 9,390 9,530 7,550 14,800 17,200
9 16,700 13,500 18,100 35,300 21,200 14,700 9,430 8,820 9,480 10,700 14,600 17,300
10 16,400 12,500 19,200 34,300 20,300 13,000 9,960 8,480 8,460 11,200 14,100 16,600
11 16,300 12,700 18,900 34,300 19,400 13,500 9,950 9,120 7,480 9,170 14,200 16,600
12 16,700 12,200 20,000 35,300 19,200 14,800 9,750 9,530 6,880 8,930 13,700 18,600
13 19,000 11,800 20,300 35,800 19,200 15,100 10,400 9,330 6,880 8,630 14,300 20,700
14 22,600 12,300 21,600 38,200 18,700 15,000 10,200 9,470 7,300 8,370 15,300 19,600
15 23,500 12,100 22,600 40,100 19,700 14,300 9,750 8,720 6,760 10,800 15,200 18,700
16 22,100 12,300 22,400 41,600 20,600 13,100 8,930 7,370 6,440 13,900 15,500 17,300
17 19,500 12,200 22,200 42,800 21,400 12,200 8,120 7,060 5,690 15,000 16,300 17,300
18 17,500 13,200 22,000 41,600 22,700 11,400 8,700 7,320 6,360 14,700 17,900 17,500
19 17,800 14,700 22,600 39,400 21,800 11,600 9,550 7,040 8,070 13,600 17,200 17,500
20 17,600 14,100 23,400 37,200 20,900 11,500 9,910 6,640 6,830 12,800 16,100 17,100
21 17,000 13,300 23,300 36,400 20,300 10,700 9,410 6,720 5,710 12,800 16,800 16,400
22 16,000 13,000 22,900 35,300 18,500 10,600 9,220 7,190 5,330 12,700 16,200 17,600
23 15,100 13,800 22,800 35,100 17,600 10,400 10,300 8,700 5,950 11,800 15,800 18,600
24 14,500 14,600 23,600 36,400 17,400 11,100 11,500 8,010 6,520 12,600 15,600 21,800
25 15,700 16,400 23,100 36,000 17,500 10,500 11,400 7,480 6,600 13,500 15,300 24,200
26 16,600 18,800 23,000 33,100 17,800 10,800 11,100 6,230 6,680 15,900 14,800 25,900
27 17,000 18,700 23,600 33,200 18,600 11,200 10,600 5,780 6,860 17,600 15,000 25,600
28 16,000 17,200 24,700 32,700 17,700 11,400 9,710 6,460 6,680 19,600 16,200 23,700
29 14,500 19,300 27,400 31,600 16,900 13,200 9,280 9,640 8,080 21,700 17,600 22,200
30 13,700   31,100 31,500 17,500 13,900 9,760 10,400 9,260 22,800 18,700 22,000
31 13,500   33,600   17,100   10,100 9,020   23,200   20,300