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For more information on species & ecosystem science:

Wildlife Science
360-902-2515
wildthing@dfw.wa.gov

Fish Science
360-902-2700
fishpgm@dfw.wa.gov

Habitat Science
360-902-2534
habitatprogram@dfw.wa.gov

 

Hydraulic Program Compliance and Effectiveness

   
 
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  Docks on Bainbridge Island
 

 

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Eelgrass (Zostra marina)

   
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Culvert at road crossing

   

The Washington Department of Fish and Wildlife is responsible for preserving, protecting, and perpetuating fish and shellfish resources of the state. In 1943 the state Legislature passed the "Hydraulic Code" (Chapter 77.55 RCW) that requires any person, organization, or government agency wishing to conduct any construction activity that will use, divert, obstruct, or change the natural flow or bed of state waters must do so under the terms of a permit (called the Hydraulic Project Approval, HPA) issued by the Washington Department of Fish and Wildlife. The law's purpose is to ensure that work does not damage the state's fish and shellfish, and their habitats.

Activities in freshwater that require an HPA include, but are not limited to: stream bank protection; construction or repair of bridges, piers, and docks; pile driving; channel change or realignment; conduit (pipeline) crossing; culvert installation; dredging; gravel removal; pond construction; placement of outfall structures; log, log jam, or debris removal; installation or maintenance of water diversions; and mineral prospecting.

Activities in saltwater that require an HPA include, but are not limited to: construction of bulkheads, fills, boat launches, piers, dry docks, artificial reefs, dock floats, and marinas; placement of utility lines; pile driving; and dredging.

To help ensure that work premitted under the terms of HPA's sufficiently preserve, protect, and perpetuate the fish and shellfish resources of the state, the Washington Department of Fish and Wildlife conducts research to address specific questions where the effectiveness of HPS's in uncertain.

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