For more information on the Hydraulic Permit Application (HPA) Program, please contact:
WDFW Habitat Program
Hydraulic Project Approval (HPA)
Technical assistance for better projects
WDFW offers a wide range of technical assistance that not only helps people implement habitat restoration projects, but also provides advice for designing fish-friendly stream crossings and residential and commercial/industrial development projects.
These guidelines help project developers and reviewers understand the best designs and mechanisms to ensure protection of Washington's aquatic and riparian ecosystems. These guidance documents are organized by topic area, as follows: