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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 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
1 369 410 476 709 478 301 170 144 114 147 220 329
2 371 406 486 722 461 301 173 133 120 144 223 329
3 366 411 500 718 453 299 169 122 117 141 233 329
4 371 414 502 724 444 297 163 115 109 142 232 326
5 373 400 513 724 434 301 169 106 105 138 234 333
6 366 391 522 722 420 312 156 104 105 145 235 336
7 368 394 536 718 406 321 156 107 104 148 236 342
8 370 398 552 699 390 320 145 110 99 144 240 347
9 372 386 561 679 386 306 144 112 103 148 252 354
10 371 378 563 665 392 295 144 116 98 145 256 360
11 371 377 565 652 391 286 141 117 101 143 260 359
12 368 377 583 641 384 281 142 123 108 140 265 373
13 372 379 587 635 375 280 141 127 108 141 269 376
14 378 388 608 622 375 286 138 126 104 148 270 374
15 378 394 641 606 372 275 128 124 106 160 274 384
16 378 399 649 604 373 265 125 123 109 161 277 381
17 371 403 657 605 371 258 124 118 113 165 286 386
18 366 411 671 590 361 254 125 120 126 167 283 390
19 363 419 673 584 354 244 124 132 130 174 275 387
20 360 416 676 577 347 232 120 135 130 187 273 383
21 363 417 677 567 342 226 120 132 138 206 275 383
22 364 424 704 551 335 217 125 131 143 201 280 377
23 366 429 712 542 321 214 133 132 142 200 284 375
24 379 433 706 532 312 207 148 130 143 200 282 373
25 407 454 694 522 309 198 151 129 144 203 291 366
26 432 467 683 512 311 190 146 122 146 207 303 373
27 437 465 684 503 307 184 144 117 146 207 307 387
28 444 466 681 500 297 178 146 121 145 213 304 379
29 434 470 681 495 295 176 146 118 151 215 311 375
30 427   690 487 290 172 147 116 148 218 320 379
31 419   694   293   140 113   219   376