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USGS Surface-Water 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 -> 2021-09-30)

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 7,440 7,220 11,400 12,800 9,630 6,600 3,070 2,530 1,890 2,430 3,040 5,510
2 7,930 6,970 11,700 12,900 9,070 6,610 2,730 2,550 1,970 2,520 2,990 5,730
3 8,110 7,470 10,700 13,000 8,230 6,330 2,630 2,410 1,800 3,080 3,050 5,290
4 7,260 8,070 9,990 12,000 8,620 7,400 2,610 2,440 1,800 3,180 3,300 4,710
5 7,300 8,390 11,800 12,500 8,860 6,460 2,880 2,460 1,800 2,530 3,800 5,430
6 7,360 7,960 14,100 13,200 9,690 5,960 2,940 2,370 2,070 2,290 5,060 5,540
7 7,100 7,520 14,700 12,300 10,200 5,210 2,940 2,460 2,450 2,640 4,960 4,990
8 6,700 8,200 14,000 11,900 10,400 5,160 2,810 2,640 2,150 2,740 3,610 5,060
9 6,380 8,080 12,400 11,500 11,000 5,070 2,760 2,390 2,140 2,590 3,640 5,650
10 6,200 7,750 11,300 11,300 10,300 4,670 2,850 2,190 3,110 3,680 3,910 5,620
11 6,620 7,780 10,700 11,700 9,370 4,430 2,880 2,030 2,890 3,480 3,820 5,850
12 6,570 7,640 10,700 11,500 8,950 4,660 2,830 2,090 2,260 2,620 3,520 6,510
13 6,230 8,180 11,100 11,300 9,550 4,830 2,770 2,200 2,100 2,360 3,620 5,810
14 6,040 9,310 12,500 12,300 9,430 5,640 2,750 2,520 2,190 2,360 4,010 5,750
15 6,050 10,100 14,300 12,400 8,930 5,420 2,610 2,610 2,100 2,630 3,730 5,790
16 6,220 9,770 14,600 12,100 8,320 4,410 2,490 2,260 1,930 4,690 3,630 6,460
17 6,190 8,790 13,200 13,700 9,100 3,990 2,430 2,060 2,020 5,170 3,480 7,130
18 5,820 8,820 14,700 14,200 9,390 3,870 2,560 2,280 2,740 3,230 3,590 6,320
19 5,480 8,870 15,000 11,100 9,040 4,230 2,600 3,420 3,870 3,210 3,800 5,960
20 5,620 9,620 13,400 9,810 8,700 4,490 2,310 3,610 3,780 2,880 4,120 5,650
21 6,380 9,740 14,300 10,300 8,070 4,140 2,300 2,490 2,860 2,700 4,790 5,280
22 6,840 9,820 15,200 9,770 8,260 5,280 2,290 2,440 2,520 2,640 4,920 5,510
23 7,250 10,000 15,300 9,210 8,250 6,480 2,320 2,410 2,580 3,490 4,710 6,160
24 7,070 10,700 14,800 8,740 7,870 6,300 2,350 2,320 2,680 3,530 4,030 6,190
25 8,160 11,800 14,700 8,870 7,120 4,790 2,380 2,620 2,830 3,040 3,830 6,190
26 8,340 12,000 13,700 10,400 6,840 3,700 2,300 2,490 3,530 3,100 4,230 6,390
27 8,750 12,800 13,000 12,500 6,390 3,210 2,080 2,580 3,240 3,130 3,990 6,820
28 8,530 12,600 12,300 11,500 6,150 3,080 2,020 2,390 2,890 3,260 4,180 7,040
29 7,920 12,000 12,700 10,900 6,560 2,940 2,180 2,080 3,550 4,350 4,940 6,570
30 7,320   13,200 10,200 6,670 3,120 2,370 1,920 2,630 4,350 5,200 6,560
31 7,280   12,800   6,330   2,560 1,850   3,370   7,420