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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 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 -> 2023-09-30)

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 13,200 15,900 12,700 9,190 7,010 4,720 4,400 2,900 3,200 5,080 9,870
2 12,700 13,400 15,200 12,900 9,140 7,060 4,170 3,980 2,950 3,220 5,330 9,450
3 12,800 13,900 15,000 13,000 10,100 7,220 4,440 3,890 2,750 3,230 5,330 9,780
4 13,200 14,500 16,600 12,600 10,900 7,520 4,300 3,780 2,790 3,060 5,330 10,200
5 13,200 14,000 19,100 13,500 11,400 7,870 4,470 4,260 2,760 2,990 6,680 9,720
6 12,200 14,100 19,300 12,700 11,700 7,630 4,600 4,920 3,020 2,980 6,520 9,420
7 12,300 14,400 19,400 12,400 12,200 7,140 4,230 4,450 3,210 2,800 6,160 10,500
8 12,600 13,900 17,400 12,500 12,500 6,030 4,330 3,640 2,620 2,760 6,130 10,800
9 11,200 13,500 16,400 12,900 11,900 5,470 4,400 3,590 2,970 3,290 6,270 11,800
10 11,300 13,900 15,500 13,500 11,400 5,410 4,890 3,780 2,930 3,800 6,200 12,000
11 11,200 14,100 15,900 13,000 11,000 5,680 5,260 3,910 2,490 3,290 5,620 12,100
12 11,200 13,300 16,200 12,700 10,600 5,650 4,630 3,970 2,420 3,110 6,630 11,700
13 11,300 13,200 16,700 13,500 10,100 5,760 4,410 3,940 2,890 3,080 6,490 12,200
14 11,200 14,700 16,500 13,300 9,370 6,760 4,140 3,860 2,880 2,940 5,930 12,500
15 12,000 14,200 17,000 12,800 9,870 5,750 3,830 3,660 2,740 3,370 5,930 11,800
16 11,200 14,500 15,000 13,400 9,930 5,390 3,870 3,500 2,480 4,390 6,350 11,800
17 10,800 14,800 14,700 13,400 9,890 5,240 3,530 3,510 2,830 3,680 6,550 11,800
18 10,900 14,600 14,200 12,800 9,610 5,310 3,150 4,540 3,670 3,580 6,200 11,800
19 11,300 15,100 14,400 12,000 9,680 5,310 3,470 4,000 3,510 3,610 6,400 11,200
20 11,300 13,700 15,800 12,000 9,590 5,380 3,660 3,480 3,090 3,470 6,900 10,200
21 11,000 13,900 15,700 10,500 9,490 5,440 3,550 3,790 3,150 4,190 7,070 10,900
22 11,200 14,400 16,500 10,300 9,010 5,370 3,740 3,680 3,360 4,140 6,860 11,300
23 11,400 15,400 15,200 9,860 8,600 6,290 3,960 4,010 3,100 3,810 7,390 11,500
24 12,500 15,700 15,700 10,600 8,700 6,470 4,170 3,820 3,060 3,880 7,020 11,400
25 13,100 15,200 14,800 11,100 8,310 5,250 4,170 3,340 3,000 4,050 7,210 11,500
26 13,500 15,400 14,100 10,800 7,960 4,850 3,490 2,870 3,080 3,940 7,670 12,200
27 12,900 15,100 13,600 10,400 7,860 4,550 3,690 3,070 2,880 4,040 8,370 12,300
28 12,400 14,200 12,800 10,300 8,120 4,920 3,920 3,170 3,690 4,100 8,760 11,600
29 12,400 14,800 13,100 10,300 7,780 4,950 5,330 3,090 3,710 4,270 9,950 11,400
30 13,300   12,400 9,250 6,500 4,760 4,920 2,950 3,350 4,970 10,100 12,200
31 14,100   12,800   7,140   4,480 2,800   4,820   12,000