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USGS Daily Statistics for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


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 01104200 CHARLES RIVER AT WELLESLEY, MA


Norfolk County, Massachusetts
Hydrologic Unit Code 01090001
Latitude  42°18'59", Longitude  71°13'42" NAD27
Drainage area 211  square miles
Contributing drainage area 211  square miles
Gage datum 67.12 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 1958-10-01 -> 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
1 371 401 454 636 436 273 164 121 92 138 214 303
2 365 395 469 649 423 272 163 113 96 136 217 302
3 356 396 474 650 413 271 160 104 91 133 219 303
4 358 399 471 661 406 271 160 100 88 135 218 301
5 358 393 472 668 396 273 152 95 85 132 217 305
6 351 386 475 668 389 283 146 95 84 134 217 309
7 353 390 485 655 375 297 144 94 87 137 213 310
8 353 388 485 636 360 302 140 105 85 136 211 315
9 346 379 488 620 351 296 135 108 86 144 217 319
10 345 363 492 603 350 285 136 115 84 140 219 325
11 338 358 493 583 351 283 131 116 84 139 224 333
12 337 353 495 565 346 277 130 125 88 137 227 350
13 347 357 502 553 342 280 129 131 90 137 232 351
14 353 362 523 537 345 284 129 131 91 144 237 355
15 352 362 543 520 344 271 124 128 91 155 244 367
16 350 372 547 521 343 261 121 123 91 157 252 369
17 344 373 558 522 339 262 119 119 91 161 262 374
18 342 378 573 507 332 257 118 119 96 163 263 383
19 341 387 578 506 328 245 116 115 99 168 260 383
20 342 389 580 502 326 233 111 112 103 178 255 377
21 342 395 581 490 322 223 109 108 111 192 260 377
22 341 401 596 478 310 210 108 107 119 187 261 378
23 342 400 605 477 297 204 107 101 121 189 264 372
24 356 408 606 474 292 197 116 97 120 189 267 370
25 373 425 605 467 289 187 121 97 121 190 275 368
26 392 437 600 461 288 182 123 92 128 193 281 371
27 402 437 606 460 284 175 124 88 130 197 286 378
28 411 445 601 456 276 170 124 90 130 202 290 382
29 408 453 603 452 275 165 123 87 137 203 294 379
30 406   608 447 272 164 123 89 137 209 300 378
31 402   615   271   118 90   211   373