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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 -> 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
1 530 632 782 1,530 956 645 376 302 235 331 475 622
2 625 606 747 1,590 937 687 375 288 235 304 468 600
3 663 639 791 1,650 911 699 347 280 225 297 460 592
4 654 709 818 1,620 876 659 292 266 226 294 498 596
5 644 736 828 1,610 859 607 321 252 216 308 498 560
6 624 722 833 1,600 827 579 350 237 198 308 472 591
7 603 673 877 1,590 782 636 335 226 201 331 469 618
8 569 657 949 1,490 752 662 303 225 222 340 468 637
9 585 654 1,000 1,370 756 637 302 237 246 316 496 637
10 638 622 1,040 1,280 743 593 285 247 264 324 503 659
11 666 610 1,020 1,280 738 552 283 260 239 319 519 677
12 662 629 1,030 1,250 767 512 294 264 264 312 525 697
13 626 632 1,090 1,230 752 484 302 265 301 320 491 708
14 630 624 1,120 1,240 752 514 321 257 281 327 528 707
15 643 630 1,170 1,240 722 525 312 241 252 345 564 707
16 617 643 1,210 1,210 741 515 291 245 244 394 547 688
17 602 670 1,210 1,260 764 487 292 237 240 440 526 679
18 574 681 1,230 1,290 766 476 284 243 230 440 499 688
19 566 670 1,360 1,240 752 449 295 249 279 403 486 714
20 595 660 1,420 1,160 729 413 307 277 308 380 478 710
21 609 659 1,370 1,100 695 407 326 272 311 418 490 700
22 615 687 1,350 1,070 675 426 316 253 338 451 508 703
23 607 721 1,370 1,050 649 420 321 234 357 432 523 700
24 625 761 1,340 1,040 625 409 322 237 334 407 538 600
25 679 828 1,300 1,050 618 431 328 225 300 416 523 574
26 801 866 1,280 1,030 648 478 305 222 309 435 556 716
27 860 851 1,290 987 663 446 270 217 322 436 577 751
28 865 828 1,300 975 661 425 266 209 337 437 564 718
29 846 840 1,330 980 604 414 284 218 304 442 613 675
30 770   1,360 986 494 390 320 227 303 432 650 654
31 699   1,430   593   336 239   453   572