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Pennsylvania Geological Survey

Pennsylvania Water Science Center

Estimates of Mean-Monthly & Annual Ground-Water Recharge

Darby Creek near Darby: 01475510

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Data Tables

Mean-Monthly Recharge From RORA Method, as Percent of Annual Recharge for Period of Record -- Darby Creek near Darby
OctNovDecJanFebMarAprMayJunJulAugSep
6.1
8.0
10.0
9.1
11.4
13.2
11.4
9.5
5.2
6.4
4.0
5.6


Annual Recharge, in inches -- Darby Creek near Darby
YearRecharge From RORABase Flow from PART
1965
11.9
11.3
1966
14.8
12.0
1967
19.7
18.2
1968
17.0
16.3
1969
16.3
13.9
1970
18.2
17.8
1971
23.4
20.7
1972
25.0
22.0
1973
23.2
21.3
1974
18.4
17.3
1975
23.4
20.9
1976
15.4
14.7
1977
15.4
12.1
1978
17.9
17.7
1979
23.9
21.4
1980
11.6
11.6
1981
9.2
8.0
1982
13.9
12.5
1983
20.2
16.9
1984
18.6
18.0
1985
8.9
8.0
1986
12.6
10.5
1987
12.3
11.8
1988
12.1
11.1
1989
16.7
14.8

 

 

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