A variety of non profits and non-governmental organizations can be helpful to research on water resources. Particularly in fields that deal with policy and management of water resources. They can also be a good source of data and reference material such as maps and statistics.

University and extension services resources are included here as well.

Try this custom search engine to search through selected organization and government websites.  This search engine can be used to supplement other search strategies for government and organizational research, publications, and data.