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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 03072655 Monongahela River near Masontown, PA


Greene County, Pennsylvania
Hydrologic Unit Code 05020005
Latitude  39°49'30", Longitude  79°55'23" NAD27
Drainage area 4,440  square miles
Gage datum 768.5 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 11,200 13,600 15,800 12,700 9,100 7,270 4,690 4,360 2,880 3,180 5,040 9,850
2 12,600 13,700 15,100 13,000 9,050 7,210 4,140 3,950 2,920 3,220 5,270 9,390
3 12,600 13,900 14,900 13,700 9,980 7,300 4,410 3,850 2,720 3,220 5,280 9,710
4 13,000 14,500 16,500 13,500 10,800 7,550 4,260 3,750 2,770 3,030 5,260 10,100
5 13,000 14,100 18,900 13,900 11,300 7,870 4,440 4,220 2,740 2,960 6,580 9,610
6 12,100 14,300 19,000 13,100 11,600 7,600 4,560 4,880 3,000 2,950 6,420 9,330
7 12,200 14,900 19,200 12,700 12,200 7,250 4,200 4,410 3,190 2,770 6,050 10,400
8 12,500 14,000 17,200 12,800 12,400 6,240 4,280 3,610 2,600 2,730 6,030 10,700
9 11,300 13,600 16,200 13,200 11,800 5,690 4,360 3,570 2,940 3,250 6,150 11,600
10 11,600 14,000 15,700 13,700 11,400 5,520 4,840 3,780 2,900 3,740 6,090 11,800
11 11,300 14,100 15,900 13,200 10,900 5,730 5,210 3,900 2,470 3,250 5,530 12,100
12 11,300 13,300 16,100 13,000 10,500 5,670 4,580 3,950 2,400 3,070 6,520 11,800
13 11,400 13,400 16,600 13,800 9,970 5,770 4,370 3,900 2,860 3,040 6,400 12,200
14 11,200 14,900 16,400 13,400 9,470 6,730 4,110 3,830 2,860 2,910 5,860 12,500
15 12,000 14,300 16,900 12,800 9,900 5,830 3,800 3,630 2,710 3,350 5,860 11,700
16 11,200 14,600 14,900 13,400 9,900 5,510 3,840 3,470 2,470 4,330 6,250 11,800
17 10,700 15,000 14,600 13,400 9,860 5,360 3,500 3,480 2,810 3,640 6,440 11,800
18 10,800 14,700 14,100 12,700 9,600 5,470 3,130 4,500 3,630 3,550 6,130 11,800
19 11,200 15,100 14,200 12,000 9,680 5,480 3,440 3,970 3,480 3,570 6,330 11,300
20 11,200 13,700 15,600 11,900 9,510 5,530 3,630 3,450 3,070 3,430 6,820 10,200
21 10,900 13,800 15,500 10,400 9,410 5,520 3,520 3,760 3,120 4,150 7,020 10,900
22 11,000 14,300 16,200 10,200 8,950 5,420 3,710 3,650 3,330 4,140 6,910 11,200
23 11,200 15,400 14,900 9,710 8,560 6,280 3,930 3,980 3,080 3,800 7,410 11,400
24 12,400 15,700 15,500 10,400 8,650 6,410 4,140 3,790 3,040 3,860 7,110 11,200
25 13,100 15,200 14,600 10,900 8,240 5,200 4,130 3,310 2,980 4,030 7,280 11,400
26 13,600 15,300 13,900 10,700 8,000 4,810 3,460 2,840 3,050 3,920 7,750 12,100
27 12,900 15,000 13,400 10,300 7,870 4,530 3,660 3,050 2,860 4,010 8,550 12,200
28 12,600 14,200 12,600 10,200 8,230 4,870 3,880 3,140 3,660 4,050 8,840 11,500
29 12,700 15,600 12,900 10,200 8,090 4,910 5,280 3,070 3,660 4,220 10,000 11,300
30 13,400   12,200 9,160 6,680 4,730 4,870 2,930 3,320 4,900 10,100 12,100
31 14,100   12,600   7,760   4,430 2,780   4,800   12,000