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Ecology home | Water supply | Streamflow restoration | WRIA 9 Duwamish/Green Watershed Restoration and Enhancement Committee

Last revised: October 14, 2019

The Streamflow Restoration Act (RCW 90.94) is a new law affecting water resource management in Washington State. The law, passed in 2018, helps protect water resources while providing water for families in rural Washington. 

• Read more about the Streamflow Restoration law

The law directs local planning groups in 15 watersheds to develop or update plans that offset potential impacts to instream flows associated with new permit-exempt domestic water use.

Ecology is leading the WRIA 9 Duwamish/Green Watershed Restoration and Enhancement Committee. Get more information:

• If you would like to receive notices about WRIA 9 Duwamish/Green Watershed Restoration and Enhancement Committee meetings, subscribe to the email list .

How the law affects this watershed

As of Jan. 19. 2018, new permit-exempt wells for domestic use in this watershed are:

• allowed 950 gallons per day as the maximum annual average (350 gallons per day during drought).
• subject to a $500 fee.

Please contact your county for more information on these standards as they may change in the final watershed plan or any potential rulemaking.

This watershed:

• has an instream flow rule that does not regulate permit-exempt wells.
• is directed by Section 203 of the new law to adopt a watershed restoration and enhancement plan by June 30, 2021.

 Meetings

This committee has until June 2021 to complete plans that estimate the 20 year consumptive use from new permit-exempt wells and identify projects to offset that consumptive use. The plans will need to meet net ecological benefit. The standing meeting date for this committee is the 4^th Tuesday of the month in the afternoon.

2019

November 19 12:30 p.m.-3:30 p.m. King County South Treatment Plant, 1200 Monster Rd SW, Renton, WA 98057.

October 22 12:30 p.m.-3:30 p.m. Tukwila Community Center, 12424 42nd Ave S, Tukwila, WA 98168.

September 24 12:30 p.m.-3:30 p.m. Tukwila Community Center, 12424 42nd Ave S, Tukwila, WA 98168.

• Agenda
• Draft meeting summary
• Meeting Materials:
  • WRIA 9 Growth Projections spreadsheet
  • Growth projections methods summary
  • Growth projections maps
    • WRIA 9 Distribution of Projected Permit-Exempt Wells 2018 - 2038
    • WRIA 9 Permit Exempt Well Potential 
    • Web Map - under "Draft Growth Forecasts" layer
  • Net Ecological Benefit Guidance Overview - presentation
  • Salmon habitat restoration in WRIA 9 - presentation 

August No WREC Meeting

July 23 9:30 a.m. – 4 p.m. Meeting and project site visits. Auburn City Hall, Council Chambers, 25 W Main St, Auburn, WA.

• Agenda
• Meeting Summary
• Meeting materials:
• Subbasin proposal for vote
• King County draft well projections for WRIA 9
• WRIA 9 King County Building Permits 2000-2017
• WRIA 9 King County Historic Growth Percentages
• Approved WRIA 9 subbasin map
• Eagle Lake Siphon Project – presentation

June 25 12:30 p.m.-3:30 p.m. Tukwila Community Center, 12424 42nd Ave S, Tukwila, WA 98168.

• Agenda
• Meeting summary
• Meeting materials:
  • King County subbasin proposal
  • Water right acquisitions presentation
  • Water right acquisitions handout

May 28 12:30 p.m.-3:30 p.m. King County South Treatment Plan, Black River Room, 1200 Monster Road S.W. Renton, WA 98507. This is a joint meeting with the Cedar-Sammamish (WRIA 8) Committee.

• Agenda
• Meeting summary
• Meeting materials:
  • Consumptive Use Discussion Guide
  • Updated committee calendar and proposed meeting schedule
  • Consumptive Water Use Estimates 
  • Growth Projections Discussion Guide 

April 23 12:30 p.m.-3:30 p.m.

• Agenda
• Meeting summary
• Meeting materials:
  • GeoEngineers web map
  • Subbasin proposal – presentation 
  • Subbasin proposal – map 
  • Methods for growth projections – presentation 
  • Reference maps:
    • Map of UGA and municipal watershed
    • Map of Ecology well logs for WRIA 9: 1998-2007 well log basin map and zoomed map and 2008-2018 well log basin map and zoomed map

March 26 

• Agenda
• meeting summary
• Meeting materials:
  • Updated committee calendar and proposed meeting schedule
  • Growth Management Act Planning in King County - presentation
  • King County Water Availability and Permitting Study
  • King County Water Availability and Permitting Study - presentation
  • King County Water Service Requirements

February 26 

• Agenda
• Meeting summary
• Approved Operating Principals
• Meeting materials:
  • Introduction to Hydrogeology
  • Introduction to Subbasins

January 22  

• Agenda
• Meeting summary
• Meeting materials:
  • DRAFT Proposed Timeline and Key Decisions
  • WREC plan components - presentation
  • Revised operating principles - draft for review (v011519)
  • Introduction to Instream Flows 

2018

December 11th

• Agenda
• Meeting summary
• Meeting materials:
  • Geography presentation
  • Operating principles - draft for review (v12/4/18)

October 29

• Agenda
• Meeting summary
• Meeting materials:
  • ESSB 6091 - Map
  • Focus on: New streamflow restoration law
  • WRIA 9 Duwamish-Green - Basin map
  • Presentation - RCW 90.94 Streamflow Restoration

Streamflow restoration implementation grants

We have launched a grant program for Streamflow Restoration implementation projects. The first round of grants will focus on projects that improve streamflows and instream resources.

• Read more

Committee specific resource materials

• Committee Roster
• Approved and signed operating principles
• Watershed map
• Instream Flow Rule
• Consumptive Water Use Estimates 

General information

• USGS: Streamflow Depletion by Wells
• Department of Ecology Streamflow Restoration Webpage
• Hirst v. Whatcom County
• Engrossed Substitute Senate Bill 6091
• RCW 90.94
• Streamflow Restoration Grants Fiscal Year 2019 Interim Funding Guidance
• Case law
• Final Net Ecological Benefit Guidance
• Streamflow Restoration Policy and Interpretative Statement

Contact:

Stephanie Potts
Streamflow Restoration
stephanie.potts@ecy.wa.gov
425 649-7138