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USGS Daily Statistics for Connecticut

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ICE EFFECTS ON STREAMFLOW - During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.

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 -> 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 16,000 14,000 16,200 40,600 37,800 18,600 11,800 8,460 6,900 8,770 13,900 18,500
2 15,100 13,400 15,600 42,800 36,300 19,200 11,700 8,360 6,590 9,010 13,400 18,700
3 15,200 13,500 15,900 44,200 35,600 19,300 11,500 8,150 6,650 9,560 14,000 18,500
4 15,300 14,000 16,100 45,200 35,700 18,700 10,800 7,750 6,470 9,660 15,000 18,000
5 14,600 14,000 16,600 46,300 34,800 17,800 9,450 7,870 6,300 9,400 15,000 17,500
6 14,500 13,900 16,900 47,000 33,200 16,900 9,790 7,880 6,280 9,240 14,800 17,400
7 14,600 13,800 18,200 46,800 31,600 16,700 9,390 7,820 6,460 8,970 14,900 17,200
8 14,900 13,800 18,600 46,400 29,700 16,500 9,160 8,180 6,540 9,490 15,200 17,700
9 15,000 13,700 19,000 45,400 28,400 15,600 8,950 8,200 6,550 10,500 15,500 17,500
10 15,600 13,000 20,100 43,700 27,600 15,300 8,620 7,890 6,410 10,500 15,800 16,900
11 15,800 12,700 20,600 43,200 27,400 15,000 8,490 8,330 6,400 9,990 16,000 16,600
12 15,600 13,100 21,800 44,000 27,600 14,800 8,690 8,840 6,850 9,510 15,400 17,400
13 15,600 12,800 22,500 44,700 27,500 14,500 8,560 8,660 6,810 9,110 15,500 18,000
14 15,800 13,000 23,200 45,000 27,300 14,900 8,670 8,820 6,910 9,090 15,700 18,000
15 15,400 12,800 24,000 44,800 27,100 14,700 8,540 8,530 6,790 9,820 15,400 17,500
16 14,900 13,200 24,400 45,100 26,700 14,500 8,390 7,560 6,990 10,900 15,400 16,600
17 14,400 13,200 25,100 47,400 26,000 13,900 8,390 7,260 7,520 11,000 15,600 16,000
18 13,900 13,000 26,900 48,200 25,400 13,700 8,150 7,420 7,980 11,500 15,600 16,200
19 14,000 13,300 28,100 48,300 24,900 13,300 7,760 8,350 8,310 11,600 15,300 16,300
20 14,500 13,300 28,500 47,800 24,100 12,900 7,590 7,870 8,100 11,700 15,300 16,000
21 14,500 13,600 28,900 47,000 23,900 12,500 7,460 7,060 8,530 12,700 16,500 15,600
22 14,500 14,300 30,200 46,000 23,600 12,000 7,740 6,840 9,360 12,900 16,800 16,500
23 14,300 15,600 30,800 45,200 22,500 11,400 8,180 6,850 9,520 12,500 16,600 16,600
24 14,400 15,900 30,300 44,600 21,900 11,600 8,750 6,510 9,090 12,500 15,900 16,600
25 15,700 16,900 29,700 44,200 21,700 11,700 8,410 6,260 8,540 13,100 15,600 16,800
26 17,300 17,800 30,100 43,900 21,400 11,500 7,820 6,210 8,480 14,100 16,100 16,600
27 17,700 17,600 31,400 43,400 20,700 11,400 7,650 6,220 8,430 13,900 16,500 16,700
28 17,500 16,800 32,900 41,800 20,000 11,600 7,330 6,240 8,430 14,000 17,100 16,700
29 16,400 17,000 34,600 40,500 19,300 12,000 7,310 7,140 8,600 14,900 17,900 16,100
30 15,200   36,600 39,300 19,200 11,800 8,020 7,290 8,740 15,000 18,600 16,000
31 14,300   38,400   18,800   8,530 7,210   14,800   16,400