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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 01125100 FRENCH RIVER AT NORTH GROSVENORDALE, CT


Windham County, Connecticut
Hydrologic Unit Code 01100001
Latitude  41°58'42.47", Longitude  71°54'01.85" NAD83
Drainage area 101  square miles
Gage datum 330.99 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 1999-10-01 -> 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
1 255 191 285 409 283 127 97 70 73 99 233 250
2 245 196 300 426 281 141 122 70 74 89 205 260
3 232 193 300 447 265 166 117 61 75 95 202 249
4 233 193 282 450 249 173 102 60 70 103 189 232
5 237 217 273 472 227 161 96 61 59 97 179 218
6 240 224 271 467 214 154 88 60 55 89 170 212
7 231 227 305 455 201 168 81 57 82 80 165 219
8 225 235 279 441 193 175 79 65 96 76 168 219
9 215 228 291 440 191 167 81 60 101 88 170 218
10 209 218 281 437 188 178 80 65 101 84 169 242
11 210 213 284 420 176 170 81 64 95 83 169 257
12 234 211 288 398 163 175 81 59 88 89 167 294
13 257 222 313 397 160 165 83 63 91 103 165 288
14 261 226 354 407 175 172 76 66 89 107 172 283
15 272 214 361 387 172 158 70 78 84 193 175 280
16 261 220 358 398 189 149 61 93 75 138 169 275
17 254 224 350 403 212 158 54 84 63 126 192 276
18 248 229 359 387 213 159 60 75 70 137 199 295
19 244 227 338 371 202 154 62 68 74 139 195 294
20 239 224 331 341 195 144 56 65 71 147 195 268
21 228 220 347 325 182 138 54 58 66 158 189 259
22 203 214 359 308 164 137 54 56 53 155 193 262
23 194 211 348 320 146 145 62 49 50 134 205 266
24 212 222 357 322 142 153 89 43 57 140 209 277
25 228 254 353 323 141 149 96 40 63 159 209 279
26 233 291 341 310 149 143 102 39 85 159 207 280
27 239 284 340 306 162 125 96 42 88 176 216 281
28 246 293 355 291 161 120 88 80 88 201 217 272
29 229 293 373 297 151 108 78 78 99 219 218 279
30 208   443 284 143 100 71 68 102 240 234 276
31 204   423   130   69 75   252   262