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Canyon Flood Mitigation & Partnership Opportunities City of Wenatchee • Chelan County • Chelan-Douglas Land Trust. Canyon Drain Public Meetings & Outreach 8/5/2010 City Council Work Session 9/2/2010 City Council Work Session 9/13/2010 Board of County Commissioners Meeting

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Canyon Flood Mitigation & Partnership OpportunitiesCity of Wenatchee • Chelan County• Chelan-Douglas Land Trust


Canyon Drain Public Meetings & Outreach

8/5/2010 City Council Work Session

9/2/2010 City Council Work Session

9/13/2010 Board of County Commissioners Meeting

11/1/2010 Informative flyer sent to County residents

12/2/2010 City Council Work Session

1/25/2011 Wenatchee School Board Meeting

4/19/2011 Wenatchee School Board Meeting

5/10/2011 Mailing to City residents along canyon drainages

6/29/2011 Wenatchee School Board Meeting

7/21/2011 Board of County Commissioners Meeting



Chelan county stormwater program
Chelan County Stormwater Program

  • 2011 Chelan County Stormwater Comprehensive Plan – 75% complete.

  • Within the vicinity of Wenatchee, the county has both open and closed conveyance systems.


Summary of flood hazard reports
Summary of Flood Hazard Reports

  • Canyon No. 1 and No. 2 pose the highest risk of potential mud flows.

  • Risk factors

    • high hill slope gradient

    • high rainfall intensity

    • lack of vegetation

    • land-use practices

  • Debris, mud & sediment = System Failure


Conceptual layout of Water Quality/Flood Management Structures

Proposed #1 Western Hills Stormwater Facility – City

Proposed #1 Canyon Water Quality Facility –County


How did we get here
How Did We Get Here? Structures

  • The CDLT coordinated a site visit with the city, and county to a potential joint use facility parcel (May 2011).

  • As a result, C.C. conducted a feasibility study of the site (July 2011).

    • City/county interface

    • Water quality improvement

    • Debris control now. Potential future flow control.


Joint use facilities
Joint Use Facilities… Structures

  • Combined flood mitigation and water quality improvements with recreational facilities for schools, trailheads, and neighborhood parks.



Foothills plan
Foothills Plan Structures


Foothills plan1
Foothills Plan Structures

  • Improved trailheads


Next steps
Next Steps Structures

  • Launch public outreach to explore joint use facility projects.

  • Pursue funding opportunities.

  • Follow-up with the Wenatchee School District on the Western Hills Facility.

  • Continue exploring partnership possibilities.


Discussion
Discussion Structures


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