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Pennsylvania Geological Survey

Pennsylvania Water Science Center

Estimates of Mean-Monthly & Annual Ground-Water Recharge

West Branch Perkiomen Creek at Hillegass: 01472199

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Data Tables

Mean-Monthly Recharge From RORA Method, as Percent of Annual Recharge for Period of Record -- West Branch Perkiomen Creek at Hillegass
OctNovDecJanFebMarAprMayJunJulAugSep
5.2
9.4
9.2
10.2
11.4
18.9
11.1
9.6
3.8
4.2
2.9
4.2


Annual Recharge, in inches -- West Branch Perkiomen Creek at Hillegass
YearRecharge From RORABase Flow from PART
1982
14.2
13.0
1983
22.5
18.2
1984
21.7
20.9
1985
11.1
10.1
1986
16.0
14.0
1987
14.7
13.0
1988
13.4
12.1
1989
17.4
15.5
1990
18.7
14.8
1991
12.2
11.9
1992
13.6
11.4
1993
21.2
18.5
1994
21.0
19.1
1995
13.3
11.8
1996
27.1
22.3
1997
13.6
13.3
1998
15.0
14.1
1999
12.5
10.4
2000
14.4
12.9
2001
13.0
12.0

 

 

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