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Pennsylvania Geological Survey

Pennsylvania Water Science Center

Estimates of Mean-Monthly & Annual Ground-Water Recharge

Monocacy Creek at Bethlehem: 01452500

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Data Tables

Mean-Monthly Recharge From RORA Method, as Percent of Annual Recharge for Period of Record -- Monocacy Creek at Bethlehem
OctNovDecJanFebMarAprMayJunJulAugSep
6.2
8.9
8.3
8.9
9.8
14.4
10.0
9.3
6.3
5.8
6.2
6.0


Annual Recharge, in inches -- Monocacy Creek at Bethlehem
YearRecharge From RORABase Flow from PART
1949
11.0
11.6
1950
13.0
11.6
1951
19.8
17.3
1952
26.0
23.9
1953
23.5
21.3
1954
11.9
9.4
1955
9.3
9.1
1956
12.3
11.0
1957
11.9
10.5
1958
12.8
12.8
1959
11.8
9.3
1960
14.8
13.5
1961
15.2
13.2
1962
11.7
9.9
1963
9.3
8.6
1964
9.2
8.4
1965
4.1
4.0
1966
5.4
4.5
1967
11.1
9.6
1968
13.1
12.5
1969
9.5
8.9
1970
15.2
13.5
1971
20.5
18.6
1972
26.1
23.3
1973
25.4
22.5
1974
20.1
19.2
1975
23.7
21.0
1976
16.3
15.5
1977
18.3
15.4
1978
20.8
20.3
1979
24.1
21.2
1980
12.3
12.7
1981
6.9
6.6
1982
13.4
10.9
1983
20.3
18.1
1984
24.0
22.3
1985
11.3
10.2
1986
18.3
16.3
1987
16.8
15.1
1988
14.2
14.2
1989
17.0
15.1
1990
19.3
16.2
1991
10.9
11.8
1992
9.3
8.0
1993
20.2
17.5
1994
23.0
22.4
1995
12.8
12.0
1996
25.0
21.3
1997
14.2
14.3
1998
17.1
15.8
1999
10.5
9.1
2000
14.0
12.8
2001
11.6
10.8

 

 

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