For more information on habitat issues, please contact the
WDFW Habitat Program.
Phone: 360-902-2534

For more information on WDFW managed lands including wildlife areas, please contact the
WDFW Wildlife Program.
Phone: 360-902-2515


Data & Maps

WDFW has developed and maintains a centralized database, which stores fish passage, diversion screening, fish use, and habitat information resulting from inventory efforts conducted throughout Washington State. The Fish Passage and Diversion Screening Inventory (FPDSI) database can be used to locate, prioritize, select, implement, and monitor fish passage and screening projects.

Update barrier information
Interactive map allows users to view data for road crossing features.  Updated information may be submitted with a Barrier Correction Form.

How to submit
To submit a data correction to a road-crossing feature found on this map, select the feature and click the Barrier Correction Form link at the bottom of the pop-up window.  Changes for data errors may only be submitted for features already existing on this map.  At this time, no new barriers can be added to this map through this format.  Data corrections will be site verified by WDFW before the change is reflected on the map.

The map below is man-made barriers that have been inventoried in the State of Washington.  Only locations where a fish passage barrier inventory has been conducted are displayed.  Also, the data is in tabular form at:

View Larger Map

This map shows information on the location, type, and fish passage barrier status of road-based stream crossing structures, dams, and miscellaneous instream structures in Washington State. It is a subset of data extracted from the Washington Department of Fish and Wildlife's (WDFW) Fish Passage and Diversion Screening Inventory (FPDSI) database. It includes data compiled from several WDFW and non-WDFW fish passage barrier inventory efforts. The data are statewide in scope but do not represent a comprehensive or complete inventory of fish passage barriers. The data set is updated continually as inventory efforts are ongoing. The data are used to identify, locate, and prioritize correction of man-made fish passage barriers. Identifying and correcting fish passage barriers is a key component of salmon recovery. The data may be used by any group interested in salmon and habitat recovery. The data are also used to track where inventory efforts have occurred. The Washington Department of Fish and Wildlife (WDFW) makes no guarantee concerning the data's content, accuracy, completeness, or the results obtained from queries or use of these data. WDFW makes no warranty of fitness for a particular purpose, no representation as to the quality of any data, and assumes no liability for the data represented here. These data do not represent exhaustive inventories, but are compilations of existing knowledge from field biologists that are updated periodically as knowledge improves. This data should be used cautiously because they are not exhaustive, and are subject to change. When conducting projects or planning for fish and wildlife, please consider using additional information gathered from field investigations and consultations with WDFW or other professional biologists. This information is typically updated every 6 months and therefore, updates to the map may not be seen immediately.