For more information on the Hydraulic Permit Application (HPA) Program, please contact:
WDFW Habitat Program
(360) 902-2534


Two excavator machines conducting flow control work in the Chelan River.

2018 HPA Rule Making Round 1 is complete!
Following are documents available from the HPA Program's first round of rule making in 2018:

2018 Round 1 HPA Rule Making Documents
CR-101 Preproposal Statement of Inquiry October 4, 2017
CR-102 Notice of Proposed Rule Making January 2018
Proposed rule changes as filed January 2018
Annotated Proposed Rule Changes January 2018
Final SEPA Documents February 2018
Preliminary Regulatory Analyses Document January 2018
Science Documents Supporting 2018 HPA Rule Changes January 2018
CR-103 Rule Making Order April 2018
Annotated Adopted Rule Changes April 2018
Implementation Plan April 2018
Concise Explanatory Statement April 2018
Final Regulatory Analyses
  • Preliminary Cost-Benefit Analysis
  • Least Burdensome Alternative
  • Regulatory Fairness
  • other APA determinations.
April 2018


2018 Round 2 Hydraulic Code Rule Making

Why new rules?

On April 14, 2018, the Fish and Wildlife Commission directed WDFW to begin rulemaking to require individual Hydraulic Project Approval (HPA) permits for all suction dredge mineral prospecting.  

What are the proposed changes?

WDFW's goal is to modify rules to authorize suction dredging activities through individual HPAs rather than under the Gold and Fish Pamphlet.

WDFW's objectives in this rulemaking include:

  • Develop an individual HPA application method for suction dredging that is streamlined;
  • Develop application and reporting methods to enable WDFW to determine:
    • the number of prospectors engaged in suction dredging and
    • where and how much suction dredging occurs; and
  • Identify methods to prevent the spread of aquatic invasive species through the movement of suction dredging equipment into and around the state.
What does WDFW do in the rule making process?
  • File a pre-proposal statement of inquiry (CR-101) with the Washington State Code Reviser (5/8/2018)
  • Host public meetings to explain the scope of rule making and discuss with the public
  • Develop the language for specific rule change proposals
  • Make a State Environmental Policy Act threshold determination
  • Complete a preliminary cost-benefit analysis
  • Determine the Least Burdensome Alternative
  • Analyze effects under the Regulatory Fairness Act
  • Meet requirements for Significant Legislative Rules
  • File a Notice of Proposed Rule Making (CR-102) with the Washington State Code Reviser
  • Fish and Wildlife Commission will hold a public hearing
  • Compile comments and write responses
  • Fish and Wildlife Commission will adopt new rules

Updates will be posted here as they become available.

For Further Information

Randi Thurston,
Protection Division Manager