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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 01457500 Delaware River at Riegelsville NJ


Warren County, New Jersey
Hydrologic Unit Code 02040105
Latitude  40°35'41", Longitude  75°11'23" NAD83
Drainage area 6,328  square miles
Gage datum 125.12 feet above NGVD29
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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 2018-10-01 -> 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 19,400 12,000 13,400 17,700 21,500 11,400 6,280 5,780 9,620 10,900 15,200 16,200
2 19,300 11,200 13,300 19,100 28,400 10,800 6,030 5,600 25,000 9,790 15,800 15,800
3 18,600 11,100 13,300 21,000 24,300 10,500 6,180 5,910 18,300 10,300 17,700 14,800
4 17,700 13,600 14,600 23,700 20,600 9,610 6,260 10,200 13,100 11,000 15,800 13,800
5 17,200 13,900 14,300 22,200 20,600 9,210 6,740 13,800 10,800 11,500 13,200 13,400
6 17,100 13,000 14,700 19,900 23,300 8,350 6,380 10,600 9,700 12,100 12,300 12,200
7 15,500 12,800 17,800 18,700 22,400 7,640 6,520 8,980 9,340 10,700 12,800 12,000
8 14,200 13,400 17,600 27,300 21,400 7,470 6,270 8,980 10,000 9,930 11,800 12,100
9 13,600 14,700 16,500 30,000 18,600 8,270 7,610 9,320 11,400 9,520 10,600 11,200
10 21,000 13,100 18,900 24,000 16,600 8,700 11,400 12,100 9,990 8,460 10,900 10,700
11 20,500 12,200 21,400 20,400 16,100 8,830 11,400 12,800 8,860 8,250 11,000 13,100
12 17,300 11,600 19,600 19,100 16,000 10,500 10,700 8,710 8,070 10,900 10,700 17,600
13 17,500 11,800 20,100 22,200 17,300 10,100 10,000 7,500 7,810 10,700 13,000 17,900
14 19,100 11,600 18,900 25,100 18,600 8,510 10,100 7,170 7,440 10,200 14,500 14,200
15 16,900 10,800 17,400 25,100 17,700 7,730 11,300 6,890 7,070 9,510 13,300 13,100
16 14,500 10,300 16,500 26,700 15,700 7,340 12,800 7,440 6,870 8,840 12,600 13,500
17 13,300 10,800 16,300 22,400 14,700 7,320 11,000 7,220 7,240 8,970 11,800 14,600
18 12,100 10,600 15,500 19,300 13,500 7,850 10,900 6,860 6,790 8,720 11,200 20,400
19 11,400 11,800 17,000 19,300 12,400 8,200 12,100 11,400 6,260 8,400 10,500 26,200
20 11,900 11,100 17,300 21,000 12,600 8,170 10,100 10,200 5,940 7,510 10,100 20,400
21 11,700 10,600 16,100 21,900 11,800 8,060 8,870 8,280 5,760 7,110 9,970 19,200
22 10,300 10,300 17,000 20,300 11,100 8,690 8,840 7,520 5,910 6,730 10,400 20,100
23 10,500 9,990 18,700 18,300 10,300 8,110 9,740 15,300 6,250 6,560 10,200 19,300
24 13,200 10,900 21,500 17,300 10,100 8,520 8,560 14,700 9,470 6,300 10,100 18,900
25 18,200 11,200 21,800 16,100 9,480 9,070 7,660 11,500 12,900 6,290 12,700 23,600
26 20,300 10,900 20,800 14,800 8,490 8,210 7,340 10,200 13,800 7,580 13,400 27,900
27 19,200 10,800 18,800 15,400 8,090 9,000 7,020 9,190 10,500 17,700 15,500 21,000
28 18,000 11,800 17,900 16,800 8,900 8,480 6,410 8,070 8,760 16,300 16,900 21,800
29 16,900 16,700 18,000 15,500 10,200 7,590 6,060 7,210 8,090 12,700 15,400 21,100
30 15,300   17,300 14,900 12,300 6,770 6,010 7,070 8,200 13,000 14,900 19,200
31 13,400   16,600   13,300   5,710 7,440   13,500   18,700