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USGS Daily Statistics for Maryland

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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 01618000 POTOMAC RIVER AT SHEPHERDSTOWN, WV


Jefferson County, West Virginia
Hydrologic Unit Code 02070004
Latitude  39°26'05.0", Longitude  77°48'05.0" NAD83
Drainage area 5,955  square miles
Gage datum 280.26 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 1927-10-01 -> 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 7,270 7,220 11,300 12,400 9,550 6,470 3,000 2,460 1,900 2,440 3,010 5,330
2 7,760 6,950 11,600 12,600 9,060 6,460 2,690 2,480 2,390 2,590 2,960 5,530
3 8,030 7,510 10,600 13,100 8,200 6,180 2,590 2,340 2,190 3,160 3,000 5,120
4 7,220 8,060 10,000 12,500 8,550 7,210 2,570 2,370 1,940 3,240 3,220 4,570
5 7,230 8,520 11,800 12,700 8,860 6,310 2,820 2,400 1,860 2,590 3,690 5,250
6 7,250 8,110 13,900 13,100 9,720 5,820 2,870 2,310 2,100 2,330 4,880 5,350
7 6,980 7,610 14,400 12,300 10,500 5,100 2,870 2,410 2,450 2,630 4,790 4,820
8 6,570 8,400 13,700 12,100 11,200 5,060 2,740 2,590 2,190 2,710 3,500 4,890
9 6,270 8,140 12,200 11,600 11,500 4,920 2,700 2,480 2,170 2,570 3,520 5,450
10 6,400 7,750 11,300 11,300 10,500 4,540 2,790 2,550 3,080 3,590 3,780 5,430
11 6,930 7,730 10,900 11,600 9,580 4,320 2,820 2,160 2,850 3,400 3,700 5,650
12 6,710 7,560 10,700 11,400 9,090 4,560 2,760 2,150 2,250 2,570 3,430 6,310
13 6,340 8,060 11,000 11,300 9,590 4,760 2,710 2,210 2,090 2,310 3,650 5,700
14 6,190 9,340 12,300 12,200 9,420 5,510 2,690 2,490 2,180 2,310 4,000 5,620
15 6,110 10,100 13,900 12,300 8,890 5,290 2,550 2,570 2,090 2,570 3,710 5,650
16 6,210 9,700 14,200 11,900 8,280 4,330 2,430 2,230 1,910 4,530 3,580 6,350
17 6,130 8,750 12,800 13,400 9,020 3,920 2,370 2,040 1,990 4,990 3,450 7,050
18 5,740 8,800 14,300 13,800 9,270 3,810 2,510 2,250 2,670 3,140 3,550 6,270
19 5,410 8,890 14,500 10,800 8,930 4,130 2,550 3,330 3,750 3,120 3,740 5,990
20 5,530 9,610 13,000 9,610 8,610 4,370 2,270 3,520 3,660 2,800 4,030 5,650
21 6,250 9,660 13,900 10,100 7,990 4,020 2,260 2,460 2,790 2,620 4,650 5,240
22 6,680 9,680 14,700 9,550 8,150 5,100 2,240 2,400 2,460 2,570 4,790 5,420
23 7,050 9,850 14,800 9,010 8,110 6,250 2,280 2,370 2,550 3,370 4,670 6,110
24 6,900 10,600 14,300 8,560 7,730 6,100 2,300 2,270 2,830 3,410 4,000 6,230
25 7,950 11,600 14,200 8,660 7,000 4,660 2,320 2,560 2,950 2,950 3,780 6,120
26 8,140 11,800 13,400 10,100 6,720 3,620 2,250 2,420 3,550 3,000 4,140 6,260
27 8,640 12,600 12,700 12,100 6,300 3,160 2,030 2,500 3,230 3,030 3,900 6,650
28 8,510 12,300 12,000 11,100 6,060 3,030 1,980 2,330 2,870 3,150 4,070 6,860
29 8,220 11,900 12,300 10,600 6,460 2,890 2,130 2,040 3,480 4,180 4,790 6,450
30 7,600   12,800 9,980 6,570 3,060 2,310 1,900 2,600 4,200 5,050 6,440
31 7,370   12,400   6,220   2,490 1,840   3,290   7,250