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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 01109730 BLACKSTONE RIVER, W. MAIN ST., AT MILLBURY, MA


Worcester County, Massachusetts
Hydrologic Unit Code 01090003
Latitude  42°11'20", Longitude  71°45'56" NAD27
Drainage area 71.4  square miles
Gage datum 379.35 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 2001-10-01 -> 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
1 215 165 202 366 243 162 110 95 92 128 190 214
2 204 167 255 350 214 175 174 111 182 115 176 190
3 193 169 249 355 200 168 146 88 108 112 217 181
4 206 197 214 351 196 158 125 97 87 123 182 161
5 204 219 225 317 200 143 109 88 87 117 175 162
6 200 188 236 288 192 150 117 83 115 111 183 167
7 189 209 315 274 184 174 110 95 167 104 170 177
8 184 190 288 269 186 197 121 108 180 111 163 191
9 178 166 266 248 185 167 168 97 141 132 167 181
10 238 168 242 226 195 149 161 125 116 96 174 204
11 211 178 252 217 166 165 129 104 117 115 155 262
12 222 170 245 256 161 158 133 87 103 134 158 319
13 254 198 255 281 166 148 109 94 109 125 180 231
14 268 190 325 285 191 188 117 100 97 130 170 229
15 239 177 308 259 195 155 99 124 92 315 157 211
16 222 181 281 376 219 130 112 125 93 193 165 204
17 207 180 258 328 208 132 144 87 83 190 203 221
18 220 220 239 260 196 135 183 106 142 145 166 292
19 217 197 231 237 205 138 136 125 122 139 150 232
20 199 172 227 223 178 117 103 101 92 138 162 201
21 173 164 233 226 161 122 100 93 86 155 141 212
22 159 171 228 220 162 149 109 102 87 155 166 204
23 174 194 259 271 173 169 134 106 101 159 187 241
24 211 199 270 244 165 135 206 90 97 143 185 250
25 242 241 240 212 157 128 130 93 102 196 173 282
26 246 221 220 222 194 128 110 88 115 227 160 257
27 209 220 227 248 173 125 109 91 114 204 190 233
28 186 212 251 225 161 150 113 160 127 219 170 226
29 176 193 315 212 163 122 110 129 145 230 157 216
30 169   409 209 160 105 103 95 145 263 204 216
31 168   393   152   102 82   217   200