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


Page Loading - Please Wait...

Click to hideNews Bulletins

USGS Daily Statistics for Maryland

Click to hide state-specific text

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 -> 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 11,100 11,700 17,700 17,900 13,900 9,850 5,880 4,170 4,050 5,870 4,900 7,690
2 10,900 11,200 18,800 17,100 13,700 9,840 5,180 4,110 4,150 5,190 4,620 8,330
3 11,500 12,100 17,400 16,900 12,500 10,600 4,870 3,930 3,930 5,080 4,590 8,360
4 11,800 12,500 16,400 16,000 12,600 11,400 4,580 3,980 3,440 5,090 4,840 7,560
5 11,500 12,900 17,300 15,900 12,700 10,200 4,650 4,150 3,330 4,450 5,190 8,170
6 10,900 13,100 20,600 16,600 13,800 9,550 4,760 4,190 3,560 4,080 6,440 8,680
7 10,500 12,600 20,100 16,300 14,500 9,060 4,900 4,020 5,110 4,370 6,610 7,940
8 10,600 12,800 19,200 15,500 15,200 8,450 4,800 4,340 6,290 4,260 5,540 7,860
9 10,700 12,200 18,000 15,900 16,200 8,010 4,560 4,050 4,840 4,070 5,860 8,600
10 10,100 11,600 17,500 16,500 15,500 7,610 4,530 3,810 4,630 4,800 6,310 8,340
11 9,650 11,600 17,400 16,900 14,100 7,330 4,710 4,450 4,490 4,820 6,040 8,860
12 9,960 12,000 18,000 16,200 14,100 7,480 4,590 4,520 3,750 3,950 5,310 9,330
13 11,000 12,700 18,700 15,500 15,400 7,640 4,700 4,280 3,430 3,710 5,300 8,980
14 11,200 13,100 19,800 16,200 15,100 8,150 4,670 4,620 3,500 3,670 5,790 8,910
15 10,300 14,100 21,000 17,700 13,400 8,190 4,680 4,440 3,440 4,000 5,640 9,090
16 10,100 14,900 21,100 18,800 12,500 7,490 4,550 4,080 3,240 5,970 5,790 9,900
17 10,600 14,000 19,700 20,200 13,500 7,840 4,250 3,890 3,370 6,560 5,900 10,400
18 10,200 13,700 19,600 20,400 13,800 8,310 4,360 4,400 3,900 4,660 6,380 9,590
19 10,100 13,800 20,500 16,700 13,800 8,150 4,420 5,180 5,170 4,850 6,270 9,070
20 11,800 14,200 19,300 14,600 13,000 8,280 4,170 5,320 5,130 6,040 6,170 8,440
21 12,700 14,500 21,000 15,400 12,200 7,390 4,110 4,320 4,520 5,640 6,420 8,030
22 12,100 14,800 21,600 16,700 12,100 8,270 4,080 4,430 3,840 5,350 6,680 8,320
23 12,100 16,800 21,500 15,600 13,200 9,460 4,050 4,150 4,050 6,080 6,610 8,840
24 12,000 17,100 20,000 14,200 12,600 8,910 4,180 3,880 4,490 5,400 6,170 9,330
25 13,100 17,800 19,600 13,400 11,400 7,360 4,130 4,020 4,780 4,900 6,000 9,550
26 13,700 18,200 18,700 14,200 10,400 6,480 4,780 4,080 4,880 5,050 6,240 9,680
27 13,600 19,500 17,600 16,000 9,880 5,800 4,260 4,200 4,630 5,050 6,040 10,100
28 13,200 18,600 17,800 15,700 9,600 5,860 3,850 4,050 4,210 4,850 6,430 10,400
29 12,500 17,700 19,000 15,100 9,950 6,200 3,710 3,750 4,760 5,440 6,990 9,600
30 11,600   20,400 14,300 10,000 6,490 3,840 3,500 5,090 5,880 7,150 10,000
31 11,500   19,500   9,610   4,010 3,650   5,700   11,300