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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 -> 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
1 517 611 779 1,530 955 647 373 295 230 310 471 627
2 615 588 746 1,600 928 692 371 283 230 283 467 604
3 655 624 786 1,650 898 705 333 274 222 282 460 596
4 646 701 808 1,630 869 665 268 260 225 282 498 597
5 634 729 819 1,610 857 614 294 245 214 298 500 559
6 614 717 827 1,600 825 584 324 230 194 299 473 590
7 593 667 867 1,590 780 644 311 219 195 323 470 619
8 559 652 924 1,490 751 671 285 215 218 332 469 638
9 579 651 972 1,370 757 644 290 228 243 307 499 639
10 624 618 1,010 1,270 745 595 276 238 261 315 506 657
11 636 595 995 1,270 744 554 268 251 230 312 523 671
12 626 613 1,000 1,250 777 515 273 257 235 305 530 680
13 589 616 1,080 1,220 763 487 284 262 268 314 493 690
14 586 609 1,110 1,220 763 518 308 255 245 321 532 695
15 594 620 1,150 1,230 732 529 300 239 224 338 569 699
16 577 636 1,200 1,210 749 518 278 240 224 388 553 680
17 573 665 1,210 1,270 771 489 266 230 228 437 529 668
18 550 669 1,230 1,300 773 474 249 236 220 437 500 670
19 546 650 1,370 1,250 758 447 264 238 266 400 489 672
20 577 642 1,420 1,160 734 411 285 272 291 376 483 658
21 591 646 1,380 1,100 695 406 309 267 296 415 494 660
22 600 677 1,360 1,070 671 427 297 248 326 446 512 679
23 592 709 1,380 1,050 646 419 299 229 347 424 523 679
24 608 744 1,340 1,040 625 408 302 232 327 398 535 561
25 663 816 1,280 1,040 619 430 314 220 291 409 521 530
26 780 863 1,260 1,030 652 479 294 212 300 432 558 685
27 828 852 1,280 993 669 444 261 205 314 434 582 731
28 829 828 1,290 980 666 421 258 200 331 432 569 702
29 816 844 1,310 987 606 410 278 211 297 438 616 659
30 745   1,350 991 492 386 310 221 288 429 655 638
31 676   1,420   594   328 233   449   556