Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

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 01638500 POTOMAC RIVER AT POINT OF ROCKS, MD


Frederick County, Maryland
Hydrologic Unit Code 02070008
Latitude  39°16'24.9", Longitude  77°32'35.2" NAD83
Drainage area 9,651  square miles
Gage datum 199.92 feet above NAVD88
Output formats
HTML table of all data
Tab-separated data
Reselect output format

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 1894-10-01 -> 2020-09-30)

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 11,100 11,800 17,600 18,100 14,000 9,890 5,920 4,200 4,030 5,920 4,830 7,770
2 10,900 11,300 18,300 17,300 13,900 9,890 5,200 4,140 3,920 5,230 4,540 8,400
3 11,400 12,300 17,100 17,100 12,600 10,700 4,890 3,960 3,500 5,110 4,540 8,400
4 11,600 12,700 16,200 16,100 12,700 11,500 4,600 4,010 3,250 5,100 4,830 7,600
5 11,400 12,900 17,200 16,000 12,700 10,300 4,680 4,180 3,220 4,440 5,200 8,240
6 10,800 13,000 20,600 16,800 13,800 9,620 4,790 4,210 3,490 4,070 6,500 8,760
7 10,500 12,600 20,200 16,400 14,300 9,130 4,930 4,030 5,090 4,380 6,670 7,990
8 10,600 12,800 19,300 15,400 14,600 8,510 4,830 4,370 6,290 4,280 5,590 7,920
9 10,700 12,200 18,100 15,800 15,700 8,070 4,580 4,060 4,800 4,080 5,920 8,690
10 10,200 11,700 17,600 16,500 15,300 7,670 4,560 3,820 4,580 4,830 6,380 8,420
11 9,680 11,700 17,600 16,900 14,000 7,340 4,740 4,460 4,450 4,860 6,110 8,960
12 10,000 12,100 18,200 16,200 14,100 7,470 4,610 4,530 3,720 3,970 5,340 9,450
13 11,100 12,900 18,900 15,300 15,500 7,620 4,720 4,300 3,400 3,720 5,240 9,100
14 11,300 13,300 20,100 16,200 15,200 8,150 4,690 4,650 3,480 3,680 5,590 9,030
15 10,400 14,300 21,300 17,800 13,500 8,200 4,710 4,480 3,430 4,020 5,480 9,190
16 10,200 15,100 21,400 19,000 12,600 7,490 4,580 4,100 3,230 6,040 5,700 9,960
17 10,800 14,100 20,000 20,400 13,600 7,850 4,280 3,890 3,370 6,640 5,840 10,300
18 10,300 13,800 19,900 20,700 13,900 8,340 4,380 4,380 3,920 4,710 6,330 9,560
19 10,200 13,700 20,800 16,800 13,900 8,190 4,440 5,170 5,220 4,900 6,240 9,070
20 11,900 14,100 19,600 14,800 13,100 8,330 4,180 5,330 5,190 6,120 6,170 8,460
21 12,900 14,500 21,300 15,600 12,200 7,440 4,130 4,310 4,560 5,710 6,440 8,060
22 12,200 14,800 21,900 16,800 12,100 8,340 4,100 4,440 3,870 5,420 6,720 8,360
23 12,300 17,000 21,800 15,800 13,300 9,540 4,070 4,150 4,040 6,170 6,660 8,800
24 12,200 17,300 20,300 14,300 12,700 8,960 4,210 3,890 4,370 5,470 6,210 9,140
25 13,200 17,900 19,900 13,500 11,500 7,400 4,160 4,030 4,630 4,960 6,040 9,260
26 13,800 18,200 18,900 14,400 10,500 6,510 4,810 4,090 4,810 5,110 6,300 9,220
27 13,800 19,600 17,700 16,100 9,940 5,820 4,290 4,220 4,600 5,110 6,100 9,800
28 13,300 18,600 18,000 15,800 9,650 5,890 3,870 4,080 4,200 4,910 6,500 10,300
29 12,700 17,700 19,300 15,200 9,990 6,230 3,730 3,770 4,780 5,500 7,070 9,540
30 11,800   20,700 14,400 10,100 6,540 3,870 3,510 5,120 5,940 7,230 9,990
31 11,600   19,700   9,630   4,040 3,640   5,730   11,400