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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 01119382 WILLIMANTIC RIVER AT MERROW RD. NEAR MERROW, CT


Capitol Planning Region County, Connecticut
Hydrologic Unit Code 011000020108
Latitude  41°49'26.44", Longitude  72°18'46.25" NAD83
Drainage area 96.3  square miles
Gage datum 319.0 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 2008-10-01 -> 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
1 231 197 273 403 305 173 118 82 71 119 159 183
2 212 188 273 357 267 178 151 72 231 100 139 176
3 193 182 302 341 240 153 158 66 134 102 169 177
4 197 202 259 375 232 138 235 78 93 110 146 167
5 205 210 228 344 221 132 167 83 75 120 128 164
6 214 190 285 314 239 124 112 79 77 98 124 176
7 195 187 473 319 219 132 107 79 95 88 121 193
8 172 203 354 338 203 201 97 88 126 92 115 248
9 163 183 286 317 215 154 204 77 118 77 106 208
10 289 167 283 295 232 128 266 87 98 70 119 243
11 230 192 326 263 208 147 148 82 89 68 123 289
12 238 211 336 275 192 164 124 70 86 72 121 251
13 309 208 339 329 182 148 117 69 115 73 134 238
14 250 201 373 318 190 222 132 65 95 103 137 256
15 220 182 346 309 193 182 122 82 71 97 121 226
16 220 197 334 368 230 137 146 97 60 87 122 200
17 219 219 317 444 228 116 178 68 52 127 140 209
18 219 218 290 336 256 113 272 97 61 98 128 298
19 230 206 270 310 224 113 194 159 75 88 119 275
20 221 201 258 296 203 101 131 122 60 92 133 199
21 183 196 239 288 189 100 101 78 52 94 123 211
22 163 193 248 263 169 97 96 84 57 85 123 232
23 179 217 286 312 185 102 103 100 59 79 143 238
24 259 243 330 290 210 90 100 90 76 78 152 240
25 333 323 302 247 184 88 98 70 91 107 159 293
26 348 356 273 251 167 92 106 70 102 138 139 272
27 280 306 261 326 154 81 99 70 83 142 178 236
28 243 299 278 266 138 107 101 158 75 143 164 246
29 221 319 333 229 167 123 96 149 118 142 138 230
30 202   451 221 167 99 107 91 148 227 170 240
31 205   438   175   81 70   189   225