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The Grays Harbor County GIS Program provides geographic mapping support and services to the departments within the County, local government agencies, private companies, and the general public.

Geographic Information Systems (GIS) is an organized collection of computer hardware, software, geographic data, and personnel designed to efficiently capture, store, update, manipulate, analyze, and display all forms of geographically referenced information.

The Grays Harbor County GIS Program was started in 1988 under the Forestry Department. Once other departments learned the benefits of GIS, we started providing services outside the scope of forestry and in 1991 were merged with the Central Services Department.


The spatial data included on the GIS Website is intended for reference purposes only. Any use other than that intended shall be at the sole responsibility of the user. The information appearing on the GIS Website was obtained from a variety of sources, as typically identified hereon. The user acknowledges that inconsistencies, errors, and omissions may be contained within the data used to prepare our maps, and such data may originate from other sources than Grays Harbor County. By use of the GIS Website, the user further indemnifies and holds harmless Grays Harbor County for any adverse consequences resulting from the use of this website. Any questions regarding the information presented hereon or data used to prepare our maps should be directed to the contact organization, Grays Harbor County Department of Central Services - GIS Program or other local, state, federal agency, as listed hereon.


Tim Triesch, GISP,
GIS Coordinator, 310 W. Spruce St., Suite 100, Montesano, WA 98563
(360) 964-1509

Dan Ehreth, GIS Analyst, 310 W. Spruce St., Suite 100, Montesano, WA 98563
(360) 964-1510

GIS Products and Pricing

GIS Mapping

GIS Data Download