Principal Aquifers of the 48 Conterminous United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands

http://nationalatlas.gov/mld/aquifrp.html

An aquifer is a geologic formation, group of formations, or part of a formation that contains sufficient saturated, permeable material to yield significant quantities of water to wells and springs. The U.S. Geological Survey Water Resources Program collects information on aquifers and other water resources to determine the quantity and quality of the Nation's water supplies. This information is used by Federal, State, and local agencies for water-resources planning and management. This map layer was compiled by the U.S. Geological Survey.

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Date Of Record Release	2009-09-22 14:15:02
Description	An aquifer is a geologic formation, group of formations, or part of a formation that contains sufficient saturated, permeable material to yield significant quantities of water to wells and springs. The U.S. Geological Survey Water Resources Program collects information on aquifers and other water resources to determine the quantity and quality of the Nation's water supplies. This information is used by Federal, State, and local agencies for water-resources planning and management. This map layer was compiled by the U.S. Geological Survey.
Classification	Water and Wastewater
Resource Type	Publication
Format	Image/Photo/Diagram
Subject	Aquifers Atlases Maps
Source	United States Geological Survey
Keyword	Aquifers, Maps, Atlas
Selector	Bates
Date Of Record Creation	2009-09-22 14:04:29
Education Level	Technician/Professional/Faculty
Date Last Modified	2009-09-22 14:21:15
Language	English

Date Record Checked: 2009-09-22 00:00:00 (W3C-DTF)

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