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


Open Water Data Initiative (OWDI)

Site Owner:
Federal Geographic Data Committee (FGDC)
Geographical Scope:
USA

The OWDI seeks to integrate currently fragmented water information into a connected, national water data framework by leveraging existing systems, infrastructure and tools to underpin innovation, modeling, data sharing, and solution development. 

Réseau des bassins versants (Network of Drainage Basins) (RBV)

Geographical Scope:
selected regions (global)

French multi-disciplinary research network uniting the national efforts of several organisations that perform fundamental and applied studies on streams, rivers and their watersheds. 

South Asian Surface Water Modeling System (SASWMS)

Site Owner:
University of Washington
Geographical Scope:
South and Southeast Asia

A monitoring and forecasting system for surface water, weather, and climate for Indus, Ganges, Brahmaputra, and Mekong River basins.

The Farm Platform Data Portal

Site Owner:
Rothamsted Research
Geographical Scope:
North Wyke in Devon, UK

The Farm Platform Data Portal contains data for the Farm Platform at North Wyke in Devon and makes this available to both Rothamsted staff and the wider research community. The Farm Platform is globally unique in that it can provide access to a range of in situstate-of-the-art instrumentation in hydrologically isolated catchments to better address key issues in sustainable agriculture.

Transboundary Waters Assessment Programme (TWAP) Data Portal

Site Owner:
United Nations Environment Program (UNEP)
Geographical Scope:
selected regions (global)

A tool to showcase and visualize the main indicator results of the Global Environment Facility Transboundary Waters Assessment Programme (GEF TWAP). It harvests the results and indicators from the water-system specific databases and  provides access to the meta-data information.

USGS Water Data for the Nation

Site Owner:
US Geological Survey (USGS)
Geographical Scope:
USA

Entry point provided by the US Geological Survey for data on water flow and levels, water quality and water use data in the US. 

USGS Water Services

Site Owner:
US Geological Survey (USGS)
Geographical Scope:
USA

Complementing the USGS Water Data for the Nation site, but serving water data via automated means with the REST protocol. Services include groundwater levels, water quality, streamflow and more.

Water Data Centre

Site Owner:
European Environment Agency
Geographical Scope:
Europe

European entry point for water related data as part of the Water Information System for Europe (WISE). 

Water Data Online

Site Owner:
Commonwealth of Australia, Bureau of Meteorology (BOM)
Geographical Scope:
Australia

Australian Bureau of Meteorology online water data.

Water Data Portal (WDP)

Site Owner:
International Water Management Institute (IWMI)
Geographical Scope:
global

Entry point provided by the International Water Management Institute for a large amount of data related to water and agriculture, including meteorological, hydrological, socio-economic, spatial data layer, satellite images as well as hydrological model setups. 

Waterisotopes.org

Site Owner:
Gabriel Bowen/IsoMAP group
Geographical Scope:
Global

Data and data products documenting H and O isotope ratios of waters of the world. The Waterisotopes Database aggregates raw observational data and makes these available through a web portal and API. Other resources on waterisotopes.org provide gridded data products and model-based estimates of hydrological and environmental isotope systems.

WMO Hydrological Observing System (WHOS)

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

WHOS is the portal to the online holdings of National Hydrological Services (NHS) around the world that publish their historical (OBS) and/or real-time (RT) data without restrictions or cost. It represents the hydrological component of the WMO Integrated Global Observing System (WIGOS).