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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 01096500 NASHUA RIVER AT EAST PEPPERELL, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070004
Latitude  42°40'03", Longitude  71°34'32" NAD27
Drainage area 435  square miles
Contributing drainage area 316  square miles
Gage datum 168.28 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 1935-10-01 -> 2021-09-30)

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
1 512 613 782 1,540 940 639 374 287 225 305 445 627
2 611 591 747 1,610 917 683 369 277 214 279 440 606
3 651 627 787 1,670 894 697 327 272 190 277 440 598
4 643 700 810 1,640 866 659 260 258 191 277 483 598
5 632 719 824 1,630 851 609 287 244 187 285 488 559
6 612 704 832 1,620 813 582 318 228 175 279 462 592
7 590 658 872 1,610 767 643 306 217 181 303 461 620
8 556 645 930 1,500 742 672 279 214 207 317 461 639
9 576 642 979 1,380 750 646 281 227 233 295 492 641
10 622 608 1,020 1,280 741 596 260 237 249 304 500 659
11 635 596 1,000 1,280 741 556 251 250 216 303 518 673
12 627 615 1,010 1,260 775 516 256 256 221 297 524 680
13 591 619 1,080 1,230 761 487 261 261 257 307 484 687
14 586 611 1,120 1,240 763 519 282 254 235 314 516 693
15 595 622 1,160 1,240 731 529 278 239 214 332 554 699
16 579 639 1,210 1,220 750 519 260 240 215 382 540 681
17 574 664 1,220 1,270 772 490 252 230 219 432 518 668
18 546 668 1,240 1,300 779 476 232 235 211 431 491 670
19 543 649 1,370 1,250 762 448 242 236 257 393 480 671
20 574 643 1,430 1,170 737 412 261 263 284 370 475 655
21 590 647 1,390 1,100 699 407 289 255 290 410 487 657
22 600 679 1,370 1,070 675 429 280 237 321 441 506 675
23 594 711 1,390 1,060 651 421 286 219 341 420 518 675
24 609 746 1,350 1,050 629 409 291 219 319 394 530 555
25 664 819 1,290 1,050 624 432 305 202 284 406 517 524
26 783 865 1,270 1,040 656 481 286 197 292 425 555 681
27 833 854 1,290 1,000 672 447 255 193 306 423 580 726
28 833 832 1,300 987 670 423 251 192 325 417 567 697
29 820 844 1,320 992 606 412 272 206 291 424 615 655
30 749   1,350 986 488 388 303 219 282 417 655 634
31 678   1,430   588   320 229   432   552