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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 01204000 POMPERAUG RIVER AT SOUTHBURY, CT


New Haven County, Connecticut
Hydrologic Unit Code 01100005
Latitude  41°28'54.98", Longitude  73°13'28.46" NAD83
Drainage area 75.1  square miles
Gage datum 165.60 feet above NGVD29
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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 1932-10-01 -> 2021-09-30)

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
1 178 136 177 275 182 156 75 45 36 68 92 149
2 172 154 183 273 163 148 61 45 41 60 86 156
3 164 187 199 282 167 124 56 45 36 64 123 141
4 155 170 210 302 166 117 58 50 39 57 96 140
5 164 148 214 341 154 135 58 47 32 49 104 154
6 171 132 252 300 165 147 56 42 38 54 103 155
7 161 159 291 260 157 132 54 43 58 54 99 165
8 167 161 226 235 146 107 50 36 72 51 110 155
9 159 125 240 227 144 92 44 45 51 65 125 160
10 149 139 209 243 145 91 59 66 40 56 124 156
11 147 163 244 220 155 88 55 62 42 53 110 163
12 146 141 280 208 155 102 45 56 44 58 127 181
13 138 149 261 231 158 106 52 53 46 57 118 172
14 156 153 255 222 148 118 60 60 49 61 114 173
15 167 158 254 225 150 100 56 44 49 105 110 159
16 145 156 264 283 148 87 57 51 49 128 104 145
17 124 153 263 255 165 95 46 48 70 79 124 155
18 145 155 268 222 147 90 51 74 53 77 105 152
19 158 148 265 208 159 90 45 158 51 76 103 136
20 150 157 272 210 144 76 43 58 58 149 132 138
21 142 161 278 190 137 70 59 59 73 106 129 202
22 146 166 346 181 124 81 55 73 66 76 129 161
23 158 162 287 209 124 73 60 55 58 70 136 143
24 190 186 265 200 143 80 64 46 52 89 117 161
25 260 214 254 200 140 77 49 40 66 83 129 182
26 237 214 242 192 136 70 50 40 75 85 143 166
27 219 187 275 200 129 66 50 47 105 81 144 156
28 203 191 258 184 123 74 58 112 78 100 142 146
29 157 159 258 175 132 65 55 50 83 99 153 148
30 142   267 162 160 91 50 41 82 97 149 162
31 138   300   142   49 34   86   190