Over the course of several years, the Global Water Information Interest Group (GWIIG) of the Research Data Alliance focused on topics related to organization, representation, publication, sharing, discovery, re-use and integration of hydrologic information of different types.  One of the outcomes of the GWIIG was the creation of a list of web portals and/or websites with data or links to data on water resources.  The portals generally provide data that are at a minimum national in scope, and many of the portals offer global data.

The GWIIG requested that CUAHSI host this list to ensure permanence and wider distribution to the community. CUAHSI is continuously adding to the list based on community input. To suggest a web portal, please email help@cuahsi.org.

Users can scroll through the list of portals below, or use the browse and search tools above.

The list is by no means comprehensive. Feedback or information regarding additional portals can be sent to help@cuahsi.org


World Hydrological Cycle Observing System (WHYCOS)

Site Owner:
World Meteorological Organization (WMO)
Geographical Scope:
selected regions (global)

WHYCOS is a framework programme of the WMO dedicated to improving basic observation activities, strengthening international cooperation and promoting the free exchange of data in the field of hydrology.