NEWS! Island County Well Data is now available via an Online Mapping Application! In addition, a new mapping application provides spatial analysis of groundwater conditions (stratigraphy, chemistry etc) for approximately 2200 locations across the county. The groundwater spatial analysis application can be found HERE, and a description of the data provided for each search location can be found HERE. Finally, the Island County Seawater Intrusion Risk map is available HERE.
The hydrogeology program maintains a groundwater database containing information regarding well construction, stratigraphy, groundwater quality (chemistry) and water level data. Currently the database contains information from over 8000 wells. You can contact us to make requests for detailed site-specific data and analysis, or to provide information regarding data errors or omissions.
The most common data request involves specifying a search center (typically a parcel or a well) and a search radius (1/2 mile radius is common). The following standard data products are available for any given search (click on the name to view an example of each):
Standard Data Package descriptionExtended Data Package description
Disclaimer: Data has been collected from a variety of sources. Island County makes no guarantee as to the validity or accuracy of this data. Please report any errors to the Island County Hydrogeologist.