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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 -> 2020-09-30)

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 18,000 14,100 15,400 35,700 31,900 16,800 14,800 9,390 8,700 10,500 21,900 20,700
2 17,300 13,600 15,000 37,600 30,700 16,600 15,200 9,500 8,100 12,000 19,600 21,800
3 16,600 13,200 16,100 38,300 28,700 16,300 16,400 9,060 7,890 12,900 19,100 22,800
4 16,700 13,700 15,700 38,800 27,500 15,800 15,900 9,530 7,550 12,200 18,500 22,500
5 16,200 14,600 14,800 40,400 26,200 14,900 14,000 10,400 7,170 10,800 17,700 20,200
6 15,900 15,700 14,300 38,700 25,400 14,600 13,000 10,300 7,750 9,540 16,900 17,500
7 15,800 16,300 15,500 35,600 24,400 16,600 11,300 9,960 8,850 8,070 16,600 16,100
8 16,100 15,500 16,800 34,800 22,800 17,400 9,740 10,000 10,100 7,810 15,800 16,700
9 16,600 13,900 18,000 35,800 21,600 16,200 9,620 9,380 9,970 11,600 15,600 16,600
10 16,600 12,800 19,600 34,900 20,700 13,800 9,550 8,940 8,680 12,200 15,100 16,200
11 16,500 13,100 19,200 34,800 19,800 14,600 10,100 9,800 7,740 9,920 15,300 16,600
12 17,200 12,500 20,000 36,800 19,800 16,100 9,920 10,300 7,280 9,580 14,400 19,000
13 19,900 11,900 20,300 37,500 19,900 16,600 9,760 10,200 7,050 9,150 14,500 21,100
14 23,200 12,500 21,400 39,500 19,300 16,600 9,800 10,400 7,500 8,700 14,900 20,000
15 24,200 12,200 22,400 40,900 20,600 15,800 9,150 9,640 6,930 11,100 14,800 19,000
16 22,800 12,600 22,500 43,000 21,500 14,600 8,600 8,090 6,580 14,600 15,600 17,600
17 19,800 12,500 22,800 45,300 22,400 13,500 8,130 7,730 5,760 15,800 16,500 17,600
18 17,900 12,900 22,600 44,300 23,600 12,700 7,860 7,980 6,640 15,200 18,400 17,900
19 18,400 14,100 22,900 41,700 22,400 13,000 7,590 7,480 8,660 13,700 17,800 17,800
20 18,000 13,500 23,200 39,300 21,600 12,800 8,040 6,890 7,200 13,100 16,700 17,500
21 17,300 12,900 22,700 39,000 21,400 11,800 8,040 6,860 5,620 13,400 17,500 16,500
22 16,400 13,100 22,400 37,800 19,400 11,600 8,040 7,340 5,040 13,300 16,900 18,100
23 15,400 13,800 22,400 37,200 18,400 11,500 9,500 8,830 5,700 12,700 16,500 19,000
24 14,700 13,800 23,100 38,000 18,400 12,400 11,700 7,670 6,320 13,600 16,300 21,000
25 16,100 16,000 21,900 37,600 18,900 11,500 12,100 6,970 6,170 14,600 15,900 23,100
26 17,300 19,200 21,400 35,800 19,300 12,100 11,800 5,930 6,420 17,200 15,500 23,500
27 17,400 19,300 22,100 36,000 20,200 12,500 11,100 5,650 6,780 18,800 15,800 23,400
28 16,400 17,200 23,400 35,000 19,300 12,800 9,940 6,680 6,810 20,800 16,900 22,000
29 14,900 19,100 26,100 33,300 18,500 14,900 9,460 10,700 8,480 23,400 18,000 21,500
30 13,800   30,500 32,600 18,900 15,600 9,290 11,400 9,880 25,100 19,300 21,900
31 13,600   34,000   18,400   9,630 9,820   24,900   20,300