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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 03010820 ALLEGHENY RIVER AT OLEAN NY


Cattaraugus County, New York
Hydrologic Unit Code 05010001
Latitude  42°04'20.5", Longitude  78°27'03.1" NAD83
Drainage area 1,168  square miles
Gage datum 1,399.50 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 2009-10-01 -> 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 3,270 2,520 3,430 3,900 3,040 1,230 1,190 493 409 1,020 3,150 3,130
2 3,430 2,330 3,410 3,700 3,110 1,400 1,250 505 380 888 3,190 3,800
3 3,120 2,120 3,320 3,960 3,070 1,400 1,170 563 456 972 2,890 4,030
4 3,200 2,100 3,180 4,460 3,140 1,530 1,180 615 406 885 2,470 3,610
5 3,190 1,980 2,790 4,910 2,990 1,270 988 500 434 842 2,000 3,080
6 2,790 1,950 3,120 4,560 2,850 1,290 890 524 607 844 1,990 2,890
7 2,470 1,980 3,570 4,360 2,700 1,150 861 489 532 983 2,010 2,830
8 2,120 2,510 3,720 4,420 2,480 1,000 955 480 451 953 1,830 2,460
9 2,170 2,480 3,400 4,060 2,330 1,290 859 535 389 758 1,640 2,190
10 2,490 2,390 3,400 3,840 2,550 1,280 773 783 592 670 1,550 2,430
11 2,630 2,210 4,110 3,930 2,540 1,040 665 777 821 580 1,590 2,560
12 3,690 2,040 4,490 4,680 2,370 939 722 662 885 578 2,060 2,340
13 5,110 2,010 4,240 4,810 2,650 1,140 758 685 815 567 1,910 2,120
14 4,950 1,790 3,800 4,480 2,890 1,160 804 657 685 599 1,640 1,900
15 4,230 1,660 3,650 4,200 2,780 1,110 971 558 597 611 1,610 1,900
16 3,370 1,910 3,460 4,010 3,380 1,130 809 623 532 713 1,510 1,890
17 2,830 1,790 3,380 4,020 2,990 1,090 1,090 520 464 828 1,560 1,940
18 2,670 2,540 3,580 3,580 2,560 895 1,400 678 673 879 1,780 2,340
19 2,350 2,880 3,640 3,180 2,550 1,010 1,190 1,130 634 796 2,010 2,540
20 2,320 2,790 3,580 3,230 2,300 1,230 1,060 935 519 854 1,920 2,350
21 2,060 2,580 3,440 3,410 2,110 1,380 893 812 460 1,260 1,680 2,720
22 1,860 2,450 3,250 3,160 2,130 1,290 766 1,080 609 1,460 1,650 3,740
23 1,990 2,850 2,970 3,090 2,080 1,140 740 970 745 1,210 1,890 3,970
24 2,360 3,010 2,840 2,920 2,090 1,200 695 727 833 1,140 1,970 3,780
25 2,520 3,280 2,750 2,680 1,770 1,210 739 645 689 1,160 1,860 3,840
26 2,740 3,110 2,650 2,780 1,710 1,380 719 578 783 1,170 1,950 3,350
27 2,920 3,020 2,500 2,820 1,450 1,410 629 468 783 1,700 2,200 3,340
28 2,960 3,100 2,420 2,640 1,470 1,520 633 453 658 2,270 2,350 3,620
29 2,790 4,200 2,720 2,510 1,680 1,390 643 435 650 2,650 2,170 3,330
30 2,690   3,210 2,860 1,720 1,200 578 447 873 3,520 2,040 3,260
31 2,620   3,520   1,340   519 440   3,190   3,090