USGS Water Resources Division
- Adirondack Aquatic Institute - Non-profit specializing in lake & watershed management.
- A Guide for Residence - Water on Orcas Island - A water resource guide for residence of Orcas Island.
- Andean Amazon Rivers Analysis and Monitoring (AARAM) Project - An international research initiative to provide the fundamental scientific knowledge to effectively manage the aquatic resources of the Andean Amazon region.
- Chehalis River Council - Dedicated to promoting the conservation and restoration of the greater Chehalis River Basin resources.
- Credit Valley Conservation - Ontario based agency dealing with the management of the Credit River watershed
- EPA's Surf Your Watershed - EPA's Surf Your Watershed is a service to help citizens locate, use, and share environmental information on your watershed or community.
- Global Rivers Environmental Education Network (GREEN) seeks to improve the quality of watersheds and rivers, and thereby the lives of people.
- Institute for Watershed Studies - The Institute for Watershed Studies is an environmental research facility associated with Western Washington University
- International Rivers Network - Works to preserve and restore the rivers of the world. Linking human rights and environmental protection, IRN offers technical and financial assistance to local citizens fighting destructive water projects and large dam.
- The Lake Eau Claire Project, Wisconsin - A water quality and watershed monitoring and research program for HS students and teachers
- MD DNR Chesapeake Bay - State Agency that is responsible for for all natural resources in Maryland, most importantly the Chesapeake Bay and it's Watershed.
- North Fork John Day Watershed Council, Oregon - We are a voluntary, local, non-profit,non-governmental public group recognized by the state to address watershed issues.
- NVPDC's Four Mile Run Program - Urban watershed management program at the cutting edge for over 20 years in No. Va. near D.C.
- Portland Regional Watersheds - Community Watershed Stewardship Program: a community partnership
- Rio Grande Alliance / Alianza del Río Bravo - International forum for the diverse groups of the Rio Grande Basin concerned with the protection of natural resources / human health. Mexico.
- Santa Monica Bay Restoration Project - Dedicated to the improvement of the water quality in the Santa Monica Bay and educating people about stormwater pollution.
- The Vetiver Network - Information network relating to soil and conservation and other close technologies including forestry
- Water Quality of San Francisco Bay - The current and past water quality of the SF Bay-Estuary, including temperature, salinity, chlorophyll and other measurements
- The WetNet Project - A Web based wetlands education site. Managed by EcoScope for Sustaining Wetlands and Wetlands International.
- Woonasquatucket Watershed Project - All about the Woonasquatucket river neighborhood in Rhode Island USA