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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 01186500 STILL RIVER AT ROBERTSVILLE, CT


Litchfield County, Connecticut
Hydrologic Unit Code 01080207
Latitude  41°58'04.52", Longitude  73°02'00.40" NAD83
Drainage area 85.0  square miles
Gage datum 509.61 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 1948-10-01 -> 2024-09-30)

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
1 210 167 194 443 255 190 95 68 58 130 137 204
2 185 195 205 433 230 177 84 61 95 121 135 210
3 177 245 197 462 223 164 83 59 69 112 194 188
4 171 212 216 485 215 154 86 66 58 106 170 176
5 184 195 214 522 200 154 85 88 48 97 180 181
6 194 173 262 456 215 216 75 65 75 98 162 184
7 172 182 311 415 212 216 65 58 85 97 157 207
8 170 168 266 380 194 182 65 51 79 103 160 200
9 200 154 275 336 197 155 79 62 67 133 180 195
10 210 152 264 373 203 146 111 89 55 113 160 206
11 203 198 290 351 222 128 77 80 68 96 159 222
12 200 190 280 315 234 127 73 79 69 102 179 226
13 207 187 289 332 240 138 76 81 65 93 173 217
14 210 184 312 334 215 165 101 84 58 99 163 229
15 195 181 295 319 195 156 85 73 54 191 161 213
16 192 188 285 429 200 142 108 59 63 205 154 187
17 171 176 273 422 202 125 83 56 79 159 174 174
18 187 188 272 341 187 111 82 104 86 128 155 215
19 194 179 288 308 192 108 64 400 92 126 133 197
20 193 203 323 313 198 90 62 103 82 192 153 167
21 179 207 322 278 187 94 68 63 71 173 178 254
22 175 215 382 255 159 95 64 62 77 137 169 224
23 193 212 356 281 148 98 59 71 77 122 173 198
24 211 229 332 279 175 104 67 63 98 150 151 208
25 264 267 326 258 192 89 58 47 123 139 168 230
26 273 252 325 238 171 86 57 41 131 140 202 212
27 283 219 359 253 154 80 68 39 152 129 207 205
28 259 209 343 244 133 87 73 123 133 140 189 197
29 206 242 384 258 161 86 70 80 165 135 191 182
30 181   423 248 193 109 75 62 153 158 191 190
31 164   463   185   65 54   158   268