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Last updated on 12/19/2025 by WE.DNR HYDRO supports many agency programs and mandates and is available to the public. Agency uses include state base maps; landscape analyses and modeling; the Family Forest Fish Passage Program; landslide mapping; the Sustainable Harvest Calculation; fire protection; the Natural Heritage Program; and the Trust Forestland HCP water typing system. DNR HYDRO is also used for Forest Practices water typing. The dataset serves as the Forest Practices Water Type Map. The Forest Practices water typing system is used in the planning and regulation of forest practices on state and private forest land. Forest Practices water types (WAC 222-16-031) are intended for DNR Forest Practices regulatory purposes only.The DNR water course (WC), water body (WB), and water shoreline (WS) datasets, collectively known as DNR HYDRO, make up the most up-to-date hydrography layer for the state of Washington. WC represents water courses as arcs or lines. These occur alone as single arcs representing streams, ditches, or pipelines, or as centerlines through water body polygons such as double-banked streams, lakes, impoundments, reservoirs, wet areas, or glaciers. WB represents water bodies as polygonal features. WB includes features such as Puget Sound, lakes, wet areas, reservoirs, impoundments, glaciers, islands, and dams. WS represents shorelines as polygon perimeter arcs. The WC and WBWS are edited daily and simultaneously; updates are posted weekly for internal DNR use and monthly for external use. Attribute interrelationships within the WC and within the WBWS and spatial and attribute interrelationships between the WC and WBWS are maintained. Routes can be built on the WC by using the whole stream identifier (WC_LLI D_NR). DNR HYDRO is continually updated through the DNR Forest Practices Water Type Modification Form process. DNR HYDRO is mixed scale. The nominal scale is considered 1: 24,000, but some data at larger scales are included. |
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This digital data and metadata, (hereinafter collectively referred to as the "information"), are provided on an "AS IS", "AS AVAILABLE" and "WITH ALL FAULTS" basis. Neither Department of Natural Resources nor any of its officials and employees makes any warranty of any kind for this information, express or implied, including but not limited to any warranties of merchantability or fitness for a particular purpose, nor shall the distribution of this information constitute any warranty. The information is collected from various sources and will change over time without notice. DNR and its officials and employees assume no responsibility or legal liability for the accuracy, completeness, reliability, timeliness, or usefulness of any of the information provided nor do they represent that the use of any of the information will not infringe privately owned rights. 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It is highly suggested you refresh your copy of the Data at least annually.The Data is provided to you on an "AS IS" and "AS AVAILABLE" and "WITH ALL FAULTS" basis without any warranty of any kind, express or implied, including without limitation the implied warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement, nor shall the distribution of this information constitute any warranty.The Data is not intended to constitute advice nor is it to be used as a substitute for specific advice from a professional.You should not act (or refrain from acting) based upon information in the Data without independently verifying the information and, as necessary, obtaining professional advice regarding your particular facts and circumstances. Thurston County data is developed and maintained solely for County business functions. 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["inlandWaters","hydrography","water","stream","hydro","watercourse","river","pipeline","aqueduct","canal","ditch","siphon","fish ladder","inland waters","Thurston County"] |