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USGS Daily Statistics for the Nation

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 -> 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 19,300 13,900 15,600 34,600 31,400 15,000 13,500 10,200 8,070 9,980 20,700 19,700
2 18,500 13,300 14,800 36,700 31,900 14,700 14,000 10,200 8,360 10,900 18,800 21,400
3 18,000 12,700 15,600 36,800 30,000 14,300 15,600 9,880 8,610 11,300 18,100 21,600
4 17,800 13,300 15,600 36,900 28,400 13,900 15,400 9,700 7,760 10,900 17,200 21,100
5 17,000 14,500 15,200 38,200 27,100 13,200 13,800 10,400 6,990 10,100 16,200 19,400
6 16,400 15,100 15,400 36,700 26,400 12,800 12,700 10,500 7,630 9,260 15,100 17,100
7 16,200 15,600 17,500 34,300 25,100 14,200 11,200 10,000 8,530 7,830 14,900 15,800
8 16,200 14,800 19,800 34,200 23,100 14,800 9,990 9,920 9,340 7,770 14,300 16,600
9 16,500 13,200 20,500 35,400 21,700 13,900 10,100 9,500 9,200 10,600 14,000 16,700
10 16,700 12,200 21,200 34,600 20,400 12,500 11,000 9,700 8,440 11,000 13,500 16,200
11 17,300 12,600 20,900 35,000 19,300 12,900 13,100 10,700 7,600 9,030 13,700 16,800
12 17,400 12,200 21,500 36,400 19,000 14,300 13,900 10,600 7,110 8,730 13,100 20,000
13 19,200 11,800 21,600 37,600 18,800 14,400 14,200 10,100 7,010 8,480 13,600 22,500
14 22,700 12,200 22,700 39,900 18,200 14,500 13,800 10,100 7,480 8,250 14,700 21,100
15 23,400 12,000 23,400 41,100 19,100 13,800 12,800 9,340 7,030 10,600 14,600 19,400
16 21,800 12,200 23,500 41,900 19,900 12,600 11,800 7,960 6,670 13,300 14,800 17,800
17 19,300 12,100 24,300 42,800 20,800 11,700 10,800 7,580 5,880 14,300 15,500 17,500
18 17,300 12,900 22,700 41,300 21,800 11,100 11,100 7,900 6,510 14,000 16,900 18,500
19 17,500 14,300 23,100 39,100 21,100 11,500 11,800 7,810 7,930 13,000 16,400 20,400
20 17,300 13,900 23,700 36,900 20,000 11,600 11,900 7,460 7,000 12,200 15,500 20,100
21 16,600 13,100 23,400 36,000 19,700 10,700 11,100 7,370 6,030 12,300 16,100 19,000
22 15,700 12,700 23,000 34,900 18,200 10,400 10,900 7,700 5,630 13,100 15,400 19,700
23 14,900 13,400 23,000 34,500 17,300 10,200 11,600 8,810 6,130 12,600 15,300 20,000
24 14,400 14,100 24,200 35,600 17,100 11,000 12,500 8,260 6,570 13,000 15,300 22,200
25 15,500 15,800 23,600 35,200 16,800 10,600 12,300 7,750 6,730 13,700 14,900 23,900
26 16,600 18,000 23,300 32,800 17,000 11,100 11,800 6,680 6,720 15,700 14,400 25,200
27 17,200 17,900 24,000 32,400 17,700 11,500 11,000 6,260 6,920 17,000 14,600 25,000
28 16,300 16,600 25,100 31,600 17,000 11,700 10,000 6,850 6,730 18,800 15,800 23,200
29 14,800 18,800 28,300 30,400 16,400 13,600 9,630 9,730 8,060 20,600 17,200 21,900
30 13,900   31,800 30,500 16,800 14,200 10,200 10,400 9,370 21,700 18,000 21,800
31 13,800   34,000   16,300   10,900 9,060   22,100   20,700