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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 01104500 CHARLES RIVER AT WALTHAM, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01090001
Latitude  42°22'20", Longitude  71°14'03" NAD27
Drainage area 251  square miles
Contributing drainage area 227  square miles
Gage datum 20.02 feet above NGVD29
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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 1930-10-01 -> 2020-09-30)

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
1 362 413 478 713 476 301 169 143 111 147 216 324
2 364 408 487 728 459 301 168 133 107 144 219 326
3 360 414 502 722 450 299 164 121 106 141 228 326
4 366 416 503 727 441 297 157 115 101 141 227 323
5 369 403 515 727 430 301 163 104 97 136 230 329
6 363 394 525 725 417 313 150 103 98 142 232 331
7 365 396 540 721 403 322 150 106 97 145 234 336
8 368 400 557 702 387 322 138 110 92 141 239 341
9 369 388 567 682 383 309 133 112 96 145 252 349
10 370 380 569 668 389 297 132 116 91 143 256 355
11 369 379 571 656 388 289 129 117 95 141 260 355
12 368 379 589 646 382 283 130 123 104 138 265 369
13 372 380 594 638 374 283 128 128 104 139 268 372
14 379 390 616 625 374 289 126 126 102 147 269 371
15 378 396 650 609 372 277 116 124 104 159 273 382
16 377 401 657 606 372 267 114 123 107 161 275 379
17 369 404 666 606 370 261 113 119 111 163 284 385
18 365 413 680 590 361 257 114 121 125 167 282 389
19 361 420 682 583 355 246 113 131 129 175 273 386
20 358 418 685 577 348 235 110 133 129 188 271 382
21 361 419 686 566 343 228 111 131 137 207 274 382
22 363 426 713 550 337 220 117 129 142 202 279 377
23 364 431 721 542 323 215 126 130 142 202 282 374
24 378 435 713 532 314 209 143 127 143 202 280 372
25 407 457 700 522 311 200 147 126 144 204 289 361
26 432 470 690 512 314 192 142 119 146 206 301 365
27 438 467 690 503 309 185 141 115 146 205 305 380
28 446 467 687 499 300 179 143 120 145 211 302 373
29 437 473 687 495 295 176 144 116 150 213 309 368
30 430   695 486 289 172 145 114 148 215 319 372
31 422   699   292   139 112   214   369