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USGS Daily Statistics for Idaho

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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 13333000 GRANDE RONDE RIVER AT TROY, OR


Wallowa County, Oregon
Hydrologic Unit Code 17060106
Latitude  45°56'45", Longitude 117°27'00" NAD27
Drainage area 3,275  square miles
Gage datum 1,585.98 feet above NGVD29
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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 1944-10-01 -> 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 1,930 2,660 3,330 5,440 6,570 7,000 3,580 942 733 757 958 1,580
2 1,830 2,610 3,320 5,530 6,580 6,910 3,450 934 726 764 951 1,800
3 1,750 2,550 3,400 5,480 6,630 7,040 3,350 912 715 764 946 1,810
4 1,690 2,490 3,410 5,460 6,700 7,050 3,230 888 706 772 953 1,670
5 1,650 2,410 3,390 5,570 6,830 7,120 3,090 868 706 771 993 1,560
6 1,720 2,360 3,480 5,810 7,010 7,050 2,960 845 707 767 1,000 1,510
7 1,920 2,830 3,510 6,070 7,220 6,860 2,870 828 702 767 1,040 1,570
8 2,020 2,930 3,560 6,290 7,280 6,620 2,750 817 708 774 1,090 1,640
9 1,940 2,900 3,660 6,390 7,350 6,420 2,660 797 706 780 1,090 1,570
10 1,870 2,840 4,070 6,320 7,260 6,140 2,590 777 705 791 1,090 1,510
11 1,820 2,700 4,130 6,290 7,310 5,960 2,460 767 703 819 1,110 1,580
12 1,820 2,650 4,120 6,260 7,290 5,920 2,320 760 701 853 1,190 1,990
13 1,860 2,740 4,180 6,360 7,280 5,920 2,220 752 701 850 1,190 2,010
14 1,950 2,720 4,280 6,560 7,290 5,800 2,120 749 698 843 1,170 2,140
15 2,130 2,830 4,380 6,480 7,370 5,680 1,990 743 708 838 1,130 2,140
16 2,360 3,060 4,620 6,440 7,520 5,590 1,870 746 715 833 1,130 1,840
17 2,480 3,240 4,560 6,480 7,640 5,450 1,750 741 712 834 1,130 1,710
18 2,430 3,410 4,670 6,540 7,690 5,320 1,650 733 711 823 1,140 1,680
19 2,420 3,640 4,860 6,600 7,790 5,250 1,560 727 714 826 1,120 1,610
20 2,390 3,570 4,810 6,800 7,780 5,120 1,470 722 725 836 1,150 1,610
21 2,340 3,520 4,860 6,850 7,720 4,990 1,400 725 733 847 1,190 1,750
22 2,190 3,560 4,920 6,760 7,550 4,820 1,330 729 730 871 1,200 2,070
23 2,110 3,610 5,030 6,800 7,430 4,650 1,260 736 724 913 1,230 2,210
24 2,220 3,700 5,170 6,910 7,320 4,470 1,200 757 723 913 1,290 1,930
25 2,260 3,680 5,220 6,780 7,270 4,330 1,160 757 725 908 1,340 1,870
26 2,240 3,550 5,290 6,650 7,350 4,200 1,110 750 735 912 1,490 1,860
27 2,220 3,440 5,280 6,580 7,400 4,080 1,070 742 743 915 1,430 1,830
28 2,270 3,400 5,230 6,620 7,310 3,930 1,030 734 738 922 1,460 1,840
29 2,410 3,950 5,200 6,580 7,240 3,820 1,000 724 745 944 1,490 1,920
30 2,480   5,290 6,590 7,260 3,710 978 720 751 939 1,520 1,900
31 2,580   5,340   7,140   958 723   951   1,890