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USGS Surface-Water 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 19.21 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 1930-10-01 -> 2022-09-30)

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
1 368 409 478 706 478 301 170 144 114 147 220 329
2 371 404 487 719 461 301 173 133 120 144 223 329
3 366 409 502 715 453 299 169 122 117 141 233 329
4 370 415 503 721 444 297 163 115 109 142 232 326
5 373 402 514 721 434 301 169 106 105 138 234 333
6 366 393 523 719 420 312 156 104 105 145 235 336
7 368 396 537 714 406 321 156 107 104 148 236 341
8 370 401 553 695 390 320 145 110 99 144 240 346
9 371 390 562 676 386 306 144 112 103 148 252 354
10 371 382 564 662 392 295 144 116 98 145 256 359
11 370 381 566 649 391 286 141 117 101 143 260 358
12 368 381 583 639 384 281 142 123 108 140 265 372
13 371 383 587 632 375 280 141 127 108 141 269 375
14 378 392 607 620 375 286 138 126 104 148 270 373
15 376 397 641 604 372 275 128 124 106 160 274 383
16 377 403 648 602 373 265 125 123 109 161 277 380
17 372 407 656 603 371 258 124 118 113 165 286 385
18 368 416 670 588 361 254 125 120 126 167 283 389
19 364 424 671 584 354 244 124 132 130 174 275 387
20 361 421 674 577 347 232 120 135 130 187 273 383
21 364 421 675 567 342 226 120 132 138 206 275 383
22 365 428 701 551 335 217 125 131 143 201 280 377
23 366 433 709 542 321 214 133 132 142 200 284 375
24 380 437 703 532 312 207 148 130 143 200 282 372
25 407 458 692 522 309 198 151 129 144 203 291 366
26 431 470 681 512 311 190 146 122 146 207 303 373
27 435 468 682 503 307 184 144 117 146 207 307 386
28 442 469 679 500 297 178 146 121 145 213 304 379
29 432 470 679 495 295 176 146 118 151 215 311 375
30 425   688 487 290 172 147 116 148 218 320 379
31 417   692   293   140 113   219   376