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USGS Daily Statistics for Dist. of Columbia

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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 01646500 POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA


Montgomery County, Maryland
Hydrologic Unit Code 02070008
Latitude  38°56'59.2", Longitude  77°07'39.5" NAD83
Drainage area 11,560  square miles
Gage datum 37.20 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 1929-10-01 -> 2022-09-30)

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 13,700 14,200 19,200 22,200 17,300 11,600 6,620 5,020 3,780 5,930 6,710 10,500
2 13,800 13,800 19,400 21,900 16,300 11,900 5,980 5,100 4,060 5,530 6,250 11,500
3 14,000 14,200 19,900 22,300 15,000 11,600 5,810 4,730 4,340 5,530 6,020 11,800
4 13,800 15,400 19,300 21,100 14,700 12,300 5,330 4,810 3,960 5,500 6,040 10,500
5 13,200 16,700 19,900 20,900 15,400 12,700 5,230 4,710 3,830 5,190 6,440 10,400
6 12,900 16,900 22,900 21,300 17,100 11,400 5,340 4,420 4,210 4,900 7,760 11,200
7 12,700 16,500 24,300 20,800 18,000 10,900 5,210 4,270 5,690 4,910 8,920 10,400
8 12,300 15,900 23,800 19,300 18,200 9,890 5,580 4,420 7,850 5,300 7,640 10,100
9 12,800 15,400 22,800 19,200 18,300 9,160 5,410 4,540 7,330 5,030 7,980 11,100
10 13,400 14,500 21,000 18,900 18,700 8,880 5,190 4,250 5,730 6,320 8,270 11,100
11 12,500 14,400 20,600 19,100 16,900 8,570 5,320 4,030 5,990 6,750 7,850 12,000
12 12,400 14,300 21,000 19,100 16,700 8,510 4,980 4,290 5,230 5,540 7,060 13,000
13 11,900 14,400 21,400 19,000 17,200 9,110 5,100 4,680 4,360 4,700 7,040 12,400
14 12,200 15,400 22,600 19,900 16,900 9,860 5,310 5,270 4,200 4,880 7,520 11,800
15 12,300 16,800 24,600 20,900 15,900 10,100 5,060 5,390 4,490 5,120 7,520 11,500
16 11,900 17,200 25,200 21,000 16,100 8,690 4,850 4,580 4,360 6,990 7,500 11,600
17 12,600 15,900 23,500 22,000 17,500 7,690 4,650 4,080 4,310 9,310 7,180 12,500
18 12,400 15,400 22,500 23,400 17,700 7,430 4,550 4,470 4,730 7,160 7,250 12,100
19 12,000 16,300 24,800 21,100 18,200 7,470 4,950 5,910 6,490 6,160 7,050 11,100
20 13,600 17,100 23,800 18,100 17,200 9,060 4,710 6,590 7,010 6,370 6,950 10,500
21 15,700 17,700 25,300 18,900 15,300 8,260 4,940 5,280 6,150 5,830 7,430 10,500
22 14,600 17,800 27,200 19,500 14,700 9,800 4,850 4,540 4,970 5,690 8,300 10,400
23 13,500 18,500 27,800 18,200 14,700 11,100 4,620 4,500 5,390 5,760 8,790 10,800
24 13,600 19,400 26,100 17,200 14,700 11,500 4,700 4,780 5,940 5,720 8,470 11,000
25 15,100 21,200 24,900 16,200 13,600 9,160 4,520 4,990 5,770 5,820 7,990 11,200
26 17,200 21,700 23,800 16,800 12,700 7,390 4,450 4,670 6,410 5,860 8,160 11,600
27 17,500 21,600 22,400 19,600 12,100 6,620 4,180 4,950 6,560 5,950 7,920 12,100
28 17,200 21,200 22,000 20,600 11,600 6,610 4,040 4,460 5,670 6,060 8,200 12,700
29 16,200 22,700 22,100 19,000 11,500 6,980 4,030 3,860 6,050 6,790 9,300 12,300
30 15,000   23,700 18,200 12,000 6,770 3,960 3,590 6,560 8,050 9,900 12,100
31 14,400   23,300   11,800   4,290 3,390   7,830   12,900