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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 01097000 ASSABET RIVER AT MAYNARD, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°25'55", Longitude  71°27'01" NAD27
Drainage area 116  square miles
Contributing drainage area 116  square miles
Gage datum 146 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 1940-10-01 -> 2023-09-30)

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
1 211 233 289 492 304 195 105 67 63 87 134 195
2 218 225 288 511 293 201 105 67 68 81 133 197
3 220 236 306 517 282 206 100 66 70 77 138 199
4 221 260 322 512 281 205 94 61 69 78 144 194
5 220 266 328 504 275 200 93 58 62 82 146 190
6 214 254 330 501 264 203 89 56 57 88 147 193
7 209 244 343 485 256 210 86 54 62 91 146 201
8 205 242 357 459 249 217 85 58 65 91 146 208
9 208 232 363 429 246 212 92 63 67 94 149 208
10 214 220 367 405 249 201 99 66 67 91 155 212
11 218 222 363 392 255 188 96 67 70 90 159 213
12 213 230 365 380 256 172 90 65 77 89 162 223
13 211 227 368 369 254 166 87 65 81 89 162 228
14 206 229 380 368 255 173 85 66 73 89 164 227
15 207 234 403 361 253 175 80 65 68 96 168 234
16 207 241 411 368 248 164 75 64 63 108 166 232
17 202 249 414 395 249 156 69 63 62 118 167 226
18 196 252 431 398 245 150 69 63 66 114 165 227
19 198 260 447 379 240 142 69 74 76 108 159 226
20 202 257 444 363 234 134 70 106 78 110 152 218
21 205 253 436 342 226 129 72 101 74 121 153 211
22 212 257 449 331 218 122 73 82 72 125 158 212
23 223 266 478 332 206 119 77 71 70 119 170 214
24 235 272 480 335 195 118 88 67 71 116 178 215
25 268 293 463 331 194 117 90 61 71 115 180 220
26 302 316 453 323 198 115 82 55 76 122 189 225
27 306 313 451 319 203 111 75 50 78 125 195 228
28 312 302 450 315 197 109 72 54 79 125 193 225
29 291 298 447 313 189 110 72 58 84 128 192 216
30 264   462 312 186 107 71 60 89 136 195 213
31 245   482   189   67 63   136   212