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Pennsylvania Geological Survey

Pennsylvania Water Science Center

Estimates of Mean-Monthly & Annual Ground-Water Recharge

Little Lehigh Creek near Allentown: 01451500

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Data Tables

Mean-Monthly Recharge From RORA Method, as Percent of Annual Recharge for Period of Record -- Little Lehigh Creek near Allentown
OctNovDecJanFebMarAprMayJunJulAugSep
5.9
7.7
9.6
10.1
10.2
14.9
11.2
8.1
5.4
5.9
5.4
5.6


Annual Recharge, in inches -- Little Lehigh Creek near Allentown
YearRecharge From RORABase Flow from PART
1946
15.2
15.9
1947
14.6
13.5
1948
20.4
17.2
1949
14.6
14.9
1950
14.1
12.1
1951
20.4
17.8
1952
25.9
23.4
1953
23.9
22.2
1954
10.9
10.6
1955
14.6
13.1
1956
14.3
13.4
1957
11.7
10.5
1958
14.7
14.5
1959
10.5
9.3
1960
12.9
12.7
1961
12.4
11.4
1962
11.3
10.1
1963
9.7
8.8
1964
9.2
8.4
1965
5.7
5.4
1966
6.3
5.5
1967
10.0
8.7
1968
11.1
10.3
1969
8.6
7.9
1970
13.0
11.4
1971
21.8
19.0
1972
25.8
22.3
1973
24.0
22.1
1974
18.9
18.6
1975
26.0
23.1
1976
16.2
15.7
1977
20.1
15.9
1978
17.3
18.8
1979
22.1
19.1
1980
11.6
12.6
1981
7.5
6.8
1982
12.9
11.3
1983
20.5
16.8
1984
22.6
23.4
1985
11.4
10.0
1986
17.9
15.6
1987
15.7
15.1
1988
13.5
12.9
1989
15.1
14.0
1990
16.9
14.2
1991
12.1
12.2
1992
10.7
8.9
1993
21.4
18.5
1994
21.0
20.9
1995
13.0
12.1
1996
28.3
22.0
1997
12.6
15.4
1998
15.4
14.3
1999
11.6
10.2
2000
13.6
12.1
2001
13.4
12.6

 

 

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