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USGS Daily Statistics for Connecticut

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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 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT


Hartford County, Connecticut
Hydrologic Unit Code 01080205
Latitude  41°59'14", Longitude  72°36'21" NAD27
Drainage area 9,660  square miles
Contributing drainage area 9,660  square miles
Gage datum 27.75 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 1927-10-01 -> 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 16,700 14,000 16,300 40,400 37,600 18,200 11,800 8,810 6,910 8,820 14,200 18,500
2 15,700 13,400 15,600 42,500 36,600 18,700 11,700 8,670 6,870 8,980 13,700 18,900
3 15,800 13,400 15,900 43,700 35,800 18,700 11,700 8,480 6,970 9,420 14,100 18,500
4 15,800 13,900 16,200 44,700 35,700 18,200 11,200 7,960 6,670 9,560 15,000 18,000
5 15,100 14,000 16,700 45,700 34,700 17,300 9,790 8,080 6,370 9,420 14,800 17,600
6 14,800 13,900 17,100 46,300 33,300 16,500 10,000 8,150 6,370 9,310 14,600 17,400
7 14,900 13,800 18,700 46,100 31,600 16,200 9,600 8,030 6,560 8,960 14,700 17,200
8 15,100 13,800 19,500 45,900 29,600 16,000 9,360 8,320 6,610 9,480 14,900 17,700
9 15,100 13,600 19,800 45,100 28,200 15,100 9,240 8,350 6,610 10,400 15,200 17,600
10 15,900 12,900 20,700 43,400 27,300 15,000 9,170 8,200 6,540 10,400 15,400 17,000
11 16,200 12,700 21,100 43,000 27,000 14,700 9,470 8,700 6,520 9,840 15,600 16,800
12 15,900 13,100 22,300 43,800 27,100 14,500 9,940 9,080 6,910 9,360 15,100 17,900
13 15,800 12,800 22,900 44,600 27,000 14,200 9,920 8,820 6,880 9,020 15,300 18,700
14 16,200 13,000 23,600 45,000 26,700 14,600 9,920 8,910 7,020 9,000 15,700 18,500
15 15,900 12,800 24,400 44,900 26,400 14,400 9,650 8,610 6,890 9,840 15,500 17,900
16 15,300 13,100 24,700 45,000 26,200 14,100 9,350 7,640 7,060 10,800 15,400 16,800
17 14,700 13,200 25,500 46,900 25,500 13,500 9,190 7,310 7,530 11,000 15,500 16,200
18 14,100 13,100 27,400 47,500 25,000 13,300 9,100 7,490 7,940 11,500 15,500 16,600
19 14,100 13,500 28,000 47,600 24,500 13,000 8,990 8,460 8,220 11,600 15,200 17,200
20 14,600 13,600 28,500 47,000 23,700 12,700 8,740 8,030 8,060 11,700 15,200 16,900
21 14,500 13,700 29,000 46,100 23,500 12,200 8,410 7,240 8,550 12,500 16,300 16,400
22 14,500 14,300 30,100 45,100 23,200 11,700 8,590 7,020 9,350 13,000 16,600 17,200
23 14,300 15,500 30,600 44,300 22,200 11,100 8,900 7,000 9,510 12,700 16,400 17,200
24 14,400 16,000 30,400 43,900 21,500 11,400 9,220 6,780 9,090 12,600 15,700 17,300
25 15,700 16,900 29,900 43,500 21,200 11,500 8,760 6,550 8,650 13,100 15,500 17,600
26 17,300 17,700 30,300 43,000 20,800 11,400 8,150 6,440 8,530 14,000 15,900 17,600
27 17,800 17,500 31,500 42,300 20,200 11,300 7,900 6,390 8,450 13,900 16,300 17,700
28 17,500 16,800 33,100 40,800 19,500 11,500 7,590 6,360 8,380 14,000 16,900 17,400
29 16,400 17,400 34,900 39,600 18,900 11,900 7,550 7,160 8,570 14,800 17,800 16,700
30 15,200   36,900 38,600 18,700 11,700 8,390 7,320 8,800 14,800 18,400 16,500
31 14,400   38,400   18,300   9,000 7,250   14,800   16,800