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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


Northwest Hills Planning Region County, Connecticut
Hydrologic Unit Code 010802070103
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 -> 2026-09-30)

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
1 211 165 194 441 252 193 94 71 57 127 138 202
2 186 193 204 430 228 177 83 63 93 119 135 208
3 177 243 196 459 221 163 83 61 68 110 192 186
4 170 210 215 485 214 152 87 67 57 104 168 174
5 183 193 213 518 204 152 84 88 48 96 178 180
6 192 171 274 453 236 212 75 65 74 97 160 182
7 170 180 316 413 224 214 65 60 84 95 155 205
8 168 167 267 378 202 182 64 52 78 101 158 198
9 198 152 274 333 207 154 79 63 66 131 177 193
10 208 151 263 369 215 145 111 93 54 111 158 204
11 201 195 289 347 227 128 77 81 67 95 157 222
12 199 188 279 328 235 126 72 79 68 100 176 229
13 205 185 288 340 238 136 76 80 64 92 170 217
14 208 182 310 337 213 162 100 82 57 99 160 227
15 193 179 293 319 194 154 85 72 52 188 158 211
16 190 187 283 424 201 140 107 59 62 201 152 185
17 169 175 278 417 202 123 82 55 77 156 171 173
18 185 188 275 339 187 111 83 102 84 126 153 215
19 192 178 288 306 191 108 64 391 90 123 131 197
20 191 201 322 310 196 90 62 102 80 188 151 167
21 178 205 321 276 185 94 68 63 70 170 176 252
22 174 212 380 252 158 94 63 62 75 134 167 221
23 191 210 354 277 148 98 59 70 75 120 171 197
24 209 227 330 275 174 103 67 62 96 147 150 206
25 261 264 324 254 190 88 57 47 121 137 166 228
26 270 249 323 237 169 85 56 41 129 137 199 210
27 279 218 356 253 153 80 67 39 149 127 205 203
28 257 208 340 242 133 86 72 120 130 138 188 195
29 204 242 380 256 160 84 69 78 161 133 189 180
30 179   419 246 192 107 74 60 150 156 189 190
31 162   458   189   65 53   163   267