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- Glossary of hydrologic terms available on the USGS Water Science for schools site.
- How to Cite this website in a publication.
- USGS Guidelines and Standard Procedures for Studies of Ground-Water Quality: Selection and Installation of Wells, and Supporting Documentation. Water-Resources Investigations Report 96-4233. USGS WRIR 96-4233 -- This is a 2.1 megabyte complete pdf file.
- NATIONAL WATER INFORMATION SYSTEM (NWIS) U.S. Geological Survey, Fact Sheet FS-027-98
- About USGS