Search for monitoring stations maintained by King County's Hydrologic Information Center. (use a blank search to see all stations).

More information about King County Flood warnings and alerts can be found at https://www.kingcounty.gov/services/environment/water-and-land/flooding/warning-system/about.aspx

Data from King County's Monitoring Stations in the Puget Sound

The King County Groundwater Protection Program maintains a database of groundwater wells, water quality and water level sampling data. Users may search the database using Quick or Advanced Search OR use King County Groundwater iMap map set.

Search for King County well data by Well ID, Local Number, DoE Well Tag, or Parcel Number.

Search for Hydrology data by parameter, for a specified site.

This dataset contains zooplankton samples collected from Puget Sound and analyzed by the Keister lab at the University of Washington. For more information see the King County marine zooplankton webpage.

This specific dataset summarizes zooplankton abundance and biomass data to the lowest practical taxonomic unit, and includes life history stage information (where available). An additional dataset summarizing total zooplankton abundance and biomass by sample is available HERE .

For locator information, see the WLRD Water Quality Collection Sites dataset.

For corresponding water quality data matched by Profile ID see the Water Quality dataset.

Field observations performed by Hydrologic Information Center staff.

Welcome to the Lakes Data and Descriptions application! Use this application to search, view, and download water quality data resulting from volunteer monitoring efforts at more than 50 lakes in western King County. Choose a lake by location on the map below or by name on the list next to the map. For a synopsis of data and a discussion of long term trends among all small lakes of western King County, view the current regional assessment on the reports page.

King County marine tissue data collected from 2014 through present.