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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 03270500 Great Miami River at Dayton OH


Montgomery County, Ohio
Hydrologic Unit Code 05080002
Latitude  39°45'55", Longitude  84°11'51" NAD27
Drainage area 2,511  square miles
Contributing drainage area 2,511  square miles
Gage datum 699.15 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 1973-10-01 -> 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 4,610 2,770 4,450 4,310 3,570 2,700 2,630 1,030 974 859 1,190 3,190
2 4,580 2,650 4,880 4,170 3,880 3,090 2,940 1,030 1,290 1,050 1,450 3,250
3 3,860 3,120 4,840 4,690 4,060 3,410 2,860 1,140 1,340 938 1,450 2,920
4 3,910 3,260 5,000 5,600 3,840 3,500 2,700 1,170 1,170 1,040 1,340 2,730
5 4,200 3,530 5,400 5,540 3,830 3,510 2,490 1,180 965 1,260 1,220 2,710
6 4,080 3,520 5,750 4,940 3,540 3,470 2,010 1,420 830 1,310 1,400 2,670
7 3,610 3,590 5,230 4,230 3,370 3,100 1,970 1,290 690 1,230 1,190 2,400
8 3,370 3,850 5,050 4,230 3,470 2,630 2,060 1,300 750 1,010 1,030 2,000
9 3,430 3,590 4,990 4,290 3,470 2,530 2,110 1,520 1,030 862 974 1,950
10 3,250 3,130 5,060 4,410 3,440 2,540 2,020 1,510 1,110 875 1,090 1,900
11 3,390 3,140 5,200 4,640 3,380 2,520 2,050 1,200 915 899 1,240 1,960
12 3,970 3,090 4,970 5,020 3,550 2,770 2,520 1,000 869 794 1,500 2,510
13 4,180 2,960 5,220 4,720 3,460 2,860 2,680 870 793 810 1,610 2,620
14 3,960 2,690 5,560 4,650 3,380 3,290 2,720 790 827 798 1,590 2,600
15 3,450 2,690 5,350 4,660 3,290 3,460 2,590 803 1,010 994 1,830 2,920
16 3,170 3,090 5,050 4,440 3,220 3,350 2,130 759 901 921 2,160 3,010
17 3,040 3,890 4,710 4,160 3,260 3,320 2,040 776 796 970 2,190 3,190
18 3,400 4,550 4,430 3,670 3,650 3,080 2,200 795 673 1,110 2,010 3,230
19 3,680 4,410 4,880 3,400 4,050 3,260 2,190 930 631 1,030 2,160 3,010
20 3,510 4,050 5,240 3,840 3,890 3,040 1,860 877 639 1,030 2,090 2,660
21 3,230 4,010 5,290 4,050 3,330 2,670 1,790 904 640 1,050 1,790 2,820
22 3,240 4,640 4,860 3,870 3,350 2,420 1,840 974 662 1,040 1,570 3,270
23 3,600 5,250 4,350 3,670 2,900 2,280 1,940 1,010 737 1,040 1,830 3,490
24 3,920 5,550 4,350 3,730 2,650 2,130 1,630 1,050 795 1,200 1,960 3,690
25 3,700 5,680 4,150 3,670 2,500 2,020 1,360 949 886 1,500 1,910 3,460
26 3,480 4,880 4,090 3,860 3,050 1,950 1,280 814 1,040 1,510 2,510 3,200
27 3,480 4,230 3,850 3,740 3,540 1,980 1,340 787 1,320 1,370 2,890 3,120
28 3,380 4,520 3,610 3,500 3,690 2,110 1,260 841 1,230 1,500 3,080 3,380
29 3,130 3,220 4,100 3,640 3,310 2,660 1,350 986 1,000 1,390 3,240 3,360
30 2,870   4,580 3,680 2,870 2,590 1,310 1,030 874 1,360 3,070 3,570
31 3,000   4,600   2,630   1,180 1,040   1,210   4,080