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Changes in riparian vegetation in the Southwestern United States: Historical Changes along the Mojave River, California

Robert H. Webb·Diane E. Boyer·Kristin H. Berry
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Abstract

This report presents a map showing the potentiometric surface of the Upper Patapsco aquifer in the Patapsco Formation of Cretaceous age in Southern Maryland during September 1999. The map is based on water-level measurements in 49 wells. The potentiometric surface was 119 feet above sea level near the northern boundary and outcrop area of the aquifer in a topographically high area of Anne Arundel County, and 55 feet above sea level in a similar setting in Prince Georges County. From these high areas, the potentiometric surface declined to the southeast toward large well fields in the Annapolis area, and from all directions toward a cone of depression southwest of Waldorf. Ground-water levels declined to 20 feet below sea level in the Annapolis area, and 131 feet below sea level southwest of Waldorf.

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Robert H. Webb, Diane E. Boyer, Kristin H. Berry. 2001. Changes in riparian vegetation in the Southwestern United States: Historical Changes along the Mojave River, California. https://doi.org/10.3133/ofr01245

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