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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
1 372 405 454 636 436 273 164 121 92 138 217 306
2 366 399 469 649 423 272 163 113 96 136 219 305
3 357 400 474 650 413 271 160 104 91 133 222 306
4 359 403 471 661 406 271 160 100 88 135 221 305
5 360 397 472 668 396 273 152 95 85 132 220 308
6 353 391 474 668 389 283 146 95 84 134 220 312
7 356 394 483 655 375 297 144 94 87 137 215 313
8 355 393 484 636 360 302 140 105 85 138 214 319
9 348 383 486 620 351 296 135 108 86 146 220 323
10 347 367 491 603 350 285 136 115 84 141 222 329
11 340 363 492 583 351 283 131 116 84 140 227 336
12 340 357 495 565 346 277 130 125 88 138 230 351
13 351 361 503 553 342 280 129 131 90 139 235 352
14 357 366 526 537 345 284 129 131 91 146 240 356
15 356 366 547 520 344 271 124 128 91 157 248 368
16 354 375 551 521 343 261 121 123 91 159 255 370
17 348 375 560 522 339 262 119 119 91 163 266 375
18 345 380 575 507 332 257 118 119 96 165 267 384
19 345 387 580 506 328 245 116 115 99 170 263 384
20 346 390 582 502 326 233 111 112 103 180 259 379
21 345 396 583 490 322 223 109 108 111 195 263 379
22 344 401 598 478 310 210 108 107 119 189 264 380
23 345 401 607 477 297 204 107 101 121 191 266 374
24 359 410 609 474 292 197 116 97 120 192 269 373
25 377 427 607 467 289 187 121 97 121 193 277 371
26 397 438 602 461 288 182 123 92 128 196 284 374
27 407 439 608 460 284 175 124 88 130 200 289 382
28 415 446 604 456 276 170 124 90 130 205 293 385
29 413 453 606 452 275 165 123 87 137 206 297 382
30 411   612 447 272 164 123 89 137 212 303 381
31 407   619   271   118 90   214   376