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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 -> 2024-09-30)

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
1 215 240 287 493 309 193 107 70 65 94 135 194
2 221 231 287 510 299 200 107 69 69 88 134 197
3 222 241 308 515 287 205 105 67 71 82 138 198
4 224 262 326 512 284 204 102 62 70 82 143 194
5 223 268 331 507 278 198 100 59 62 85 145 191
6 217 255 332 504 266 201 96 57 58 90 147 193
7 213 245 348 486 257 208 90 55 63 93 146 201
8 208 244 365 459 249 215 88 60 65 93 145 208
9 211 234 369 426 246 210 94 66 68 95 148 208
10 223 222 373 402 248 199 101 70 69 92 154 211
11 233 223 370 390 254 186 99 70 74 90 158 216
12 228 230 371 377 255 171 94 69 81 89 161 230
13 226 227 372 366 253 164 91 68 85 89 161 234
14 224 230 385 365 254 172 89 68 78 90 163 231
15 223 234 413 358 251 174 84 67 72 97 167 236
16 219 241 419 365 246 162 81 66 66 108 165 233
17 212 248 420 392 247 155 78 65 64 118 167 231
18 204 251 434 395 244 150 78 67 69 115 164 237
19 205 258 448 377 238 142 77 81 81 110 158 246
20 208 255 444 360 232 134 76 112 85 111 151 237
21 212 251 435 340 226 128 77 106 80 122 152 226
22 219 255 447 329 218 122 77 86 76 127 158 223
23 229 265 476 331 206 119 81 74 73 122 170 225
24 242 270 482 336 195 118 91 69 73 118 178 229
25 276 291 468 333 193 117 93 65 74 117 179 233
26 313 313 456 324 198 115 85 61 79 124 187 235
27 320 310 451 319 201 114 77 57 81 126 194 234
28 325 299 451 315 196 113 75 58 80 126 192 230
29 303 297 452 313 187 113 74 61 86 128 190 222
30 274   467 312 185 110 74 63 94 136 193 218
31 253   485   187   70 65   137   217