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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 03041500 Conemaugh River at Seward, PA


Westmoreland County, Pennsylvania
Hydrologic Unit Code 05010007
Latitude  40°25'09", Longitude  79°01'35" NAD27
Drainage area 715  square miles
Gage datum 1,075.6 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 1938-10-01 -> 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 1,680 1,420 2,530 2,800 1,620 1,180 786 565 633 571 673 1,200
2 1,790 1,480 2,390 3,010 1,530 1,240 745 509 566 607 686 1,230
3 1,750 1,680 2,310 3,200 1,590 1,200 740 497 489 617 690 1,180
4 1,790 1,690 2,630 3,000 1,660 1,210 750 524 457 562 657 1,240
5 1,820 1,640 3,180 3,060 1,660 1,270 748 517 434 558 692 1,200
6 1,790 1,580 3,290 2,650 1,760 1,080 715 503 474 540 694 1,180
7 1,580 1,620 2,790 2,630 1,860 1,020 702 559 720 505 700 1,280
8 1,500 1,640 2,530 2,400 1,920 1,010 708 550 543 488 956 1,360
9 1,420 1,470 2,480 2,470 1,860 1,030 643 558 730 590 866 1,290
10 1,400 1,590 2,510 2,530 1,800 961 662 500 854 593 798 1,360
11 1,350 1,700 2,630 2,260 1,730 889 653 483 606 538 765 1,470
12 1,470 1,660 2,680 2,310 1,900 924 662 496 498 530 882 1,420
13 1,530 1,690 2,930 2,550 1,850 1,020 640 509 524 488 806 1,470
14 1,370 1,850 2,970 2,390 1,730 1,130 611 487 563 470 766 1,370
15 1,370 1,790 2,950 2,280 1,610 994 585 450 507 613 757 1,330
16 1,380 1,960 2,690 2,370 1,680 1,060 607 443 451 846 837 1,310
17 1,320 1,850 2,650 2,410 1,650 1,010 602 430 546 558 936 1,260
18 1,360 1,850 2,480 2,100 1,800 973 574 468 788 559 855 1,330
19 1,620 1,880 2,490 1,920 1,740 1,080 606 437 648 588 908 1,360
20 1,510 1,980 2,660 1,990 1,590 1,120 1,040 469 566 607 945 1,350
21 1,400 2,130 2,650 1,940 1,500 1,290 646 511 499 637 958 1,360
22 1,350 2,160 2,820 1,890 1,360 1,090 632 571 516 572 1,020 1,350
23 1,340 2,330 2,680 1,800 1,330 1,320 698 494 528 538 970 1,270
24 1,480 2,360 2,970 1,760 1,340 1,150 609 488 494 550 910 1,430
25 1,670 2,520 2,860 1,940 1,410 961 536 449 509 562 936 1,570
26 1,750 2,400 2,580 1,960 1,420 788 518 426 583 585 1,030 1,460
27 1,830 2,260 2,580 1,830 1,220 793 537 465 582 570 1,120 1,460
28 1,640 2,350 2,700 1,800 1,250 886 526 468 700 632 1,320 1,430
29 1,570 2,130 2,870 1,760 1,370 784 594 513 656 667 1,310 1,580
30 1,620   2,900 1,670 1,240 713 578 446 578 874 1,220 1,830
31 1,590   2,990   1,260   605 428   717   1,650