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USGS Surface-Water 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
1 215 165 204 371 249 159 110 95 92 128 190 214
2 204 167 260 356 217 174 174 111 182 115 176 190
3 193 169 255 357 202 168 146 88 108 112 217 181
4 206 203 219 355 198 157 125 97 87 123 182 161
5 204 226 228 318 193 143 109 88 87 117 175 162
6 200 194 214 288 183 151 117 83 115 111 183 167
7 189 215 313 274 177 175 110 95 167 104 170 177
8 184 196 290 271 180 200 121 108 180 111 163 191
9 178 170 269 251 171 169 168 97 141 132 167 181
10 238 173 245 228 174 150 161 125 116 96 174 204
11 211 183 256 219 153 167 129 104 117 115 155 262
12 222 175 250 255 153 160 133 87 103 134 158 319
13 254 201 260 281 161 150 109 94 109 125 180 231
14 268 195 334 287 189 192 117 100 97 130 170 229
15 239 181 315 260 179 157 99 124 92 315 157 211
16 222 183 287 383 209 130 112 125 93 193 165 204
17 207 181 251 333 202 132 144 87 83 190 203 221
18 220 225 236 264 191 135 183 106 142 145 166 292
19 217 201 231 240 203 138 136 125 122 139 150 232
20 199 176 228 226 176 117 103 101 92 138 162 201
21 173 168 234 230 160 122 100 93 86 155 141 212
22 159 175 231 221 147 149 109 102 87 155 166 204
23 174 199 264 277 142 169 134 106 101 159 187 241
24 211 205 272 249 150 135 206 90 97 143 185 250
25 242 248 239 215 147 128 130 93 102 196 173 282
26 246 225 220 222 188 128 110 88 115 227 160 257
27 209 223 230 251 168 125 109 91 114 204 190 233
28 186 213 256 228 158 150 113 160 127 219 170 226
29 176 193 322 215 161 122 110 129 145 230 157 216
30 169   420 212 158 105 103 95 145 263 204 216
31 168   404   147   102 82   217   200