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USGS Daily Statistics for the Nation

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 01099500 CONCORD R BELOW R MEADOW BROOK, AT LOWELL, MA


Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°38'12", Longitude  71°18'09" NAD27
Drainage area 400  square miles
Contributing drainage area 307  square miles
Gage datum 66.60 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 1936-10-01 -> 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
1 782 876 989 1,510 1,060 637 386 285 234 304 451 670
2 785 857 1,000 1,540 1,040 642 378 280 235 301 458 677
3 778 856 1,020 1,560 1,020 645 371 274 229 296 470 680
4 773 863 1,040 1,570 998 646 362 264 230 295 478 677
5 771 860 1,060 1,580 978 647 355 251 229 291 484 678
6 763 850 1,070 1,580 956 650 345 236 221 296 490 684
7 756 852 1,100 1,570 930 654 335 226 227 302 490 693
8 749 845 1,110 1,550 904 660 323 232 222 303 493 704
9 747 834 1,140 1,520 884 655 316 232 215 309 498 715
10 748 822 1,150 1,480 872 652 309 240 215 310 503 731
11 747 817 1,160 1,440 859 631 307 249 224 313 506 747
12 752 814 1,170 1,400 850 615 306 254 235 309 518 762
13 750 810 1,180 1,370 843 600 309 261 241 309 531 775
14 746 816 1,210 1,340 842 593 305 260 247 315 539 787
15 748 816 1,250 1,310 831 579 296 256 248 324 553 797
16 747 827 1,280 1,300 827 568 283 255 247 333 560 807
17 740 837 1,320 1,290 824 553 277 250 245 345 570 809
18 730 852 1,350 1,270 812 539 269 252 248 350 575 818
19 729 863 1,360 1,260 808 524 267 255 260 354 573 820
20 723 865 1,380 1,240 796 504 261 261 271 362 572 816
21 723 872 1,400 1,210 783 487 265 268 278 382 573 812
22 724 872 1,420 1,190 767 472 271 285 286 390 575 808
23 728 881 1,450 1,180 746 457 275 287 294 400 584 800
24 747 898 1,470 1,160 723 443 297 278 294 405 592 797
25 787 928 1,480 1,150 709 429 309 270 292 409 602 799
26 835 956 1,470 1,130 698 423 317 261 290 414 614 806
27 872 974 1,470 1,120 685 413 316 251 294 418 632 808
28 902 986 1,460 1,100 673 409 311 246 299 426 639 801
29 907 1,020 1,460 1,090 660 402 310 243 304 426 656 795
30 905   1,470 1,070 645 394 303 240 305 434 660 792
31 895   1,490   638   294 242   442   784