AGRICULTURE
Agrimet, Hydromet & Water Operations
California Farm Water Coalition
California Foundation For Agriculture in the Classroom
California Irrigation Institute
Fresno State Center For Irrigation Technology
Conservation Technology Info Center at Purdue University
Irrigation Association
National Association of Conservation Districts
Natural Resources Conservation Service
Cal Poly Irrigation Training and Research Center

RESOURCES
WaterWorld -- PennWell Publishing Company
Universities Water Information Network
"Water Wiser" Water Efficiency Clearinghouse

URBAN American
American Water Works Association
California Urban Water Conservation Council

GENERAL EDUCATION
Aims Education Foundation
Education Reference Desk
Columbia Education Center´s Mini Lessons
Education World:  Where Educator Go to Learn
Project WET
EnviroScape
North American Lake Management Society
Water Education Foundation
Water Environment Federation

KIDS
USGS Water Science for Schools
Lawrence Hall of Science
Magic School Bus
Public Broadcasting System Kid´s Page
U.S. Fish and Wildlife Kid´s Corner

NATURE
Adopt-a-Watershed
EPA Surf Your Watershed
Know your Watershed

LOCAL, STATE AND FEDERAL GOVERNMENT
Bureau of Reclamation
Arizona Department of Water Resources
Arizona Municipal Water User´s Association
University of Arizona - Water Resources Research Ctr.
California Department of Water Resources