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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 01494850 East Branch Big Elk Creek at Forestville, PA


Chester County, Pennsylvania
Hydrologic Unit Code 02060002
Latitude  39°49'20", Longitude  75°53'50" NAD27
Drainage area 9.69  square miles
Gage datum 395.2 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 2007-10-01 -> 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 17 19 18 14 17 9.2 14 9 6.8 28 14 20
2 14 19 19 13 11 13 7.9 8.6 7 10 11 14
3 13 22 15 15 12 15 7.4 6.3 6.9 8.3 13 19
4 13 23 22 13 13 12 10 29 5.7 7.3 11 10
5 12 22 20 12 15 11 7.2 6.9 5.7 7.1 9.8 15
6 13 16 17 13 14 9.3 7 6 25 6.5 12 11
7 14 19 18 13 17 16 7.3 7.4 22 6.7 8.8 21
8 11 15 18 13 13 12 8 6.4 16 6.7 8.4 14
9 11 13 20 13 12 9.8 8.9 7.5 19 7 11 26
10 14 13 46 12 11 17 8.6 6.9 11 7 9.1 12
11 16 20 26 14 12 18 13 7.7 20 17 9.9 15
12 20 15 22 14 15 12 17 7.1 9.5 9.1 12 24
13 13 27 27 22 18 15 13 32 7.9 7 13 15
14 12 15 25 12 14 10 11 11 6.7 7.5 9.1 14
15 12 14 15 18 14 8.9 7.9 7.9 6.2 8.3 11 13
16 16 27 14 20 16 8.4 7.3 6.8 6 9.2 18 24
17 13 16 13 16 20 9 7.2 7.4 6 8.8 11 19
18 16 15 13 11 11 12 6.9 11 16 9 9.2 12
19 13 13 17 12 12 11 7.5 15 7.7 7.7 11 13
20 19 12 16 19 11 22 6.6 7.4 6.1 8.4 9.5 13
21 11 17 21 13 9.9 10 6.5 9.9 6 7 8.5 29
22 10 15 20 14 11 9.7 35 13 6.7 7.4 11 13
23 12 17 15 14 9.8 9.5 20 8.3 18 6.9 20 22
24 22 28 21 13 9.5 10 15 6.6 9.1 15 21 24
25 29 24 14 13 10 7.9 14 5.9 8.6 8.6 13 24
26 13 15 13 15 10 7.5 7.4 5.7 8.4 7.7 13 36
27 12 17 15 12 9 22 7.3 9 9 23 17 21
28 11 20 17 11 9.3 14 9.2 36 19 17 9.8 19
29 11 19 16 11 11 8.7 7.2 8.8 9.6 38 13 19
30 11   21 44 9.5 7.4 6.9 8.2 22 19 21 14
31 16   22   8.6   8.6 11   11   15