The difference between the potentiometric surfaces of the lower Patapsco Aquifer in Southern Maryland, September 1990 and September 2007 /

Bibliographic Details
Main Author:	Curtin, Stephen E.
Corporate Authors:	Maryland Geological Survey, Maryland. Power Plant Topical Research Program, Geological Survey (U.S.), Maryland. Department of Natural Resources
Other Authors:	Andreasen, David C., Staley, Andrew W.
Format:	Government Document Map
Language:	English
Published:	Reston, VA : [Annapolis, Md.] : U.S. Dept. of the Interior, U.S. Geological Survey ; Maryland Dept. of Natural Resources, [2009]
Series:	U.S. Geological Survey open-file report ; 2009-1087.
Subjects:	Aquifers > Maryland, Southern > Maps. Groundwater > Maryland, Southern > Maps. Water table > Maryland, Southern > Maps.
Online Access:	https://purl.fdlp.gov/GPO/LPS114758

Description
Item Description:	Relief shown by contours and spot heights. Title from title screen (viewed on July 14, 2009). Electronic resource.
Physical Description:	1 map : digital, PDF file.
Format:	Mode of access: Internet from the USGS web site. Address as of 7/14/09: http://pubs.usgs.gov/of/2009/1087/pdf/OFR2009-1087.pdf ; current access is available via PURL.