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Water Resources

Water Resources Open Rulemaking

Ecology has a process that we follow for rulemaking.  For each phase of the process Ecology updates the information on our website and sends notice to interested parties.  We also file notice with the Office of the Code Reviser which is published in the Washington State Register.  To learn more about Ecology’s rulemaking process, visit the Frequently Asked Questions.

Follow the links below to find more information about the latest WRP rulemaking you are interested in:

  • Chapter 173-166 WAC - Emergency Drought Relief
  • Chapter 173–503a WAC - Samish River Sub-basin instream resources protection program – Lower and Upper Skagit Water Resources Inventory Area, WRIAs 3 and 4
  • Chapter 173-525 WAC - Grays-Elochoman instream resources protection and water management program - WRIA 25
  • Chapter 173-526 WAC - Cowlitz instream resources protection and water management program - WRIA 26


Dave Christensen


Index of Rules (WAC)

Index of Laws (RCW)

Public Involvement Calendar