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Title Preliminary estimates of residence times and apparent ages of ground water in the Chesapeake Bay watershed, and water-quality data from a survey of springs / by Michael J. Focazio ... [et al.].
Imprint [Washington, D.C.?] : U.S. G.P.O. ; Richmond, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, [1998]


 GovDocs Federal  I 19.42/4:97-4225    AVAILABLE
Description vi, 75 p. : ill., maps (some col.) ; 28 cm.
Series Water-resources investigations report ; 97-4225.
Note Shipping list no.: 99-0027-P.
"September 1998."
Bibliog. Includes bibliographical references (p. 52-55).
Subject Chesapeake Bay Watershed -- Environmental conditions.
Water quality -- Chesapeake Bay Watershed -- Measurement.
Springs -- Chesapeake Bay Watershed.
Groundwater -- Chesapeake Bay Watershed -- Quality.
Other Author Focazio, Michael J.
Geological Survey (U.S.)