• Hydrology Primer
• American National Standards Institute
  A searchable electronic catalog of over 11,000 approved American National Standards. To locate standards related to water, Water Web(tm) suggests the following search strings: wastewater, water and treatment, water and testing, potable and water, water and equipment.
• American Water Resources Association
• California Department of Water Resources
• Division of Water Resources
  A page maintained by the North Carolina Department of Environment, Health, and Natural Resources.
• Earth and Environmental Sciences Center's Hydrology-Related Internet Resources
• Global Hydrology and Climate Center
  A page maintained by NASA and the Marshall Space Flight Center.
• Institute of Hydrology
• Journal of Contaminant Hydrology
• Journal of Environmental Hydrology
• National Extension Water-Quality Database (Purdue University)
  Contains more than 2,400 citations and 800 full-text documents of water quality and waste management publications produced by state cooperative extension services.
• National Institutes for Water Resources (NIWR) some very interesting other services.
• National Snow and Ice Data Center
• Universities Water Information Network (UWIN)
• U.S. Army Corps of Engineers
• U.S. Environmental Protection Agency
• USGS - Selected Water-Resources Abstracts
• Water Resources of California (USGS)
• WCREC Water Resources Team (University of Nebraska)

SURFACE-WATER HYDROLOGY

• CCT Water and Wastewater Treatment
• National Weather Service
• WWW Virtual Library: IRRIGATION

BIOLOGY

• USGS - Biological Resources
• U.S. Fish and Wildlife Service

SEDIMENTOLOGY

• Journal of Glacial Geology and Geomorphology
• USGS Bedform Sedimentology
• Environmental Modeling with GRASS

GEOGRAPHIC INFORMATION SYSTEMS LINKS

• USGS - National Mapping Information
• Great GIS Net Sites! index
• USGS - EROS Data Center 
• Terrain Science Division

Also see MIAM Related Links