Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Daily Statistics for Connecticut

Click to hide state-specific text



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
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 -> 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
1 211 165 194 443 253 189 95 67 58 128 136 202
2 186 193 205 433 229 176 84 61 94 120 135 208
3 177 243 197 462 222 162 83 60 69 111 192 186
4 170 212 216 489 214 152 86 67 58 105 169 174
5 183 195 214 522 199 153 84 89 48 96 179 180
6 192 173 262 455 215 214 75 66 75 97 160 182
7 170 182 311 415 211 214 65 61 85 96 156 205
8 168 168 266 380 194 180 65 52 78 102 159 198
9 198 154 275 335 197 154 79 64 66 131 178 193
10 208 152 264 372 203 144 111 94 55 112 158 204
11 201 198 290 350 221 127 77 82 68 95 157 222
12 199 190 280 330 233 126 72 80 69 100 177 229
13 205 187 289 341 238 136 76 81 64 92 171 217
14 208 184 312 339 213 163 100 83 57 98 162 227
15 193 181 295 321 194 155 84 73 53 189 160 211
16 190 188 285 428 200 141 107 59 62 202 153 185
17 169 176 273 421 203 124 82 56 78 157 172 173
18 185 188 272 342 187 110 84 103 85 127 153 215
19 192 179 288 309 191 107 64 396 91 124 131 197
20 191 203 323 313 197 89 62 103 81 189 151 167
21 178 207 322 278 186 93 68 63 70 171 176 252
22 174 215 382 255 158 94 64 62 76 135 167 221
23 191 212 356 280 147 98 59 71 76 120 171 197
24 209 229 332 277 173 104 67 63 97 148 150 206
25 261 267 326 256 191 89 57 47 121 138 166 228
26 270 252 325 237 169 86 56 41 129 138 199 210
27 279 219 359 251 153 80 68 39 150 127 205 203
28 257 209 343 242 133 87 73 122 132 139 188 195
29 204 242 384 257 160 85 69 79 163 133 189 180
30 179   423 247 193 108 74 61 152 156 189 190
31 162   463   185   65 53   156   267