The Soil and Water Assessment Tool (SWAT) is a public domain model jointly developed by USDA Agricultural Research Service (USDA-ARS) and Texas A&M AgriLife Research, part of...

Ecology created SMA_Jurisdiction_Streams (also known as SMA_Arcs_Adopt) by selecting appropriate flowlines from the National Hydrographic Dataset "NHDFlowline.lyr" as maintained...

Streams and rivers published in Chapter 173-18-WAC. This layer will not be updated. It is slowly becoming outdated as cities and counties update their list of Shoreline...

This dataset contains spatial and attribute information of the Surface Water Quality Standards for the State of Washington, Chapter 173-201A WAC. Four views of the WQ Standard...

This map displays the most recent summary streamflow values within the state of Washington from gages maintained by the Washington State Department of Ecology and the United...

Points on streams and rivers where SMA jurisdiction begins as published in Chapter 173-18 WAC. This layer will not be updated. It is slowly becoming outdated as cities and...

This dataset contains spatial and attribute information of the Surface Water Quality Standards for the State of Washington, Chapter 173-201A WAC. Four views of the WQ Standard...

Water right records can be searched on the Water Resources Explorer web map by document/record number or by the name of the person the water right was issued to (or the name of...

Ecology created SMA_Poly_Adopt (also known as SMA_Jurisdiction_Lakes) by selecting appropriate water bodies from the National Hydrographic Dataset "NHDWaterbody.lyr" as...

Washington marine (saltwater) shorelines including Puget Sound, Hood Canal, the Strait of Juan de Fuca, and the Pacific coastline. Also includes those portions of Washington's...

This dataset contains spatial and attribute information of the Surface Water Quality Standards for the State of Washington, Chapter 173-201A WAC. Four views of the WQ Standard...

A dynamic map service composed of the points representing the Ecology streamflow gages joined to a table containing the previous day's streamflow summary data which is updated...

A dynamic map service composed of the points representing the Ecology streamflow gages joined to a table containing the previous day's streamflow summary data which is updated...

A dynamic map service composed of the points representing the Ecology streamflow gages joined to a table containing the previous day's streamflow summary data which is updated...

Water bodies (lakes, wetlands, etc.) published in Chapter 173-20 WAC. These will be replaced by water body lists published in local government shoreline master programs. See...

National Hydrography Dataset

The database presented here contains general and specific information for the Sorraia river basin in Portugal, compiled whithin the context of the FP7 MARS Project. The...

Source Water is the raw, untreated supply of water from surface water or groundwater used for current or future drinking water. Source Water protection reduces the risk of water...

The Surface Water Quality Bureau -SWQB - collects data to use for analysis to determine if surface water quality standards are being attained, and designated uses are supported.

WRRI's Statewide Water Assessment is an effort that will complement existing state agency water resource assessments. It will provide new, dynamic (updated frequently),...