NGWA - the National Ground Water Association

Ground water information, conferences, education, publications and services. Ground Water Science principals are members.

International Assn. of Hydrogeologists

Conferences, services, international links worldwide. We are members.

Int'l. Association for Environmental Hydrology

Rapid on-line publishing of work and international connections, especially South America.

The U.S. Army Corps of Engineers Publications

Some pretty useful downloads here. Use the drop-down menus.

The Karst Waters Institute

Dedicated to that subset of ground water occurrence and conditions - karst (cavernous conditions)

USGS Earth Explorer

Maps, photos, imagery.

Ground Water Protection Council

Particularly useful for information on state regulations, underground injection and oil and gas issues re ground water.

CRC Press Lewis Publishers

Numerous environmental publications including our Sustainable Wells masterpiece (ISBN 9780849375767 - CAT# 7576), Geomicrobiology, and Drilling.

National Ground Water Monitoring Network portal

A compilation of selected ground-water (groundwater) monitoring wells from Federal, State, and local groundwater monitoring networks across the nation.