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King County Flooding Mitigation Proposal

King County has a revised flooding mitigation proposal for FEMA.

The proposal, which was presented at the 2012 annual meeting, affects numerous properties near the greenbelt infiltration pond.

Wendy Kara, of King County Water and Land Resources Division, has asked the WRA Board of Trustees for feedback regarding community support for the project.

Ms Kara’s email to the Board of Trustees is below.  A diagram of the proposal can be found here:  Wilderness Rim Flood Reduction Project Elements-revised 2012.

The Board of Trustees strongly encourages you to actively participate in this process so the outcome will reflect the best interests of the membership.  Please watch the website calendar for scheduled meetings, or contact the WRA office to add your email address to the notification list.

 

Infiltration Pond

 

Wendy Kara’s email

Attachment:   Wilderness Rim Flood Reduction Project Elements-revised 2012

From: Kara, Wendy
Sent: Friday, September 13, 2013 5:38 PM
To: ‘office@wildrim.org’; ‘trustees@wildrim.org’
Subject: Support for county’s Wilderness Rim grant proposal

 

Hi Wilderness Rim community,

 

I know you haven’t heard much from me about the FEMA grant King County hoped to get to address the flooding around the infiltration pond.  Recently I heard from the state that FEMA seems to be okay with the revised proposal (that does NOT involve Brewster Lake) and is going through the environmental review of the proposal.  Today I got a question about community support for the project. If you would like to write a letter or e-mail about your support (or lack thereof) for the project, please send to me and I can share with the state and FEMA.  Please share this e-mail with the rest of the Wilderness Rim community.  If someone could get the information on the Wilderness Rim Association website that would be helpful too.

 

I’ve attached a figure showing locations of the proposed actions, which are also briefly described below.  It should all be the same information I have sent before and that I shared at the 2012 annual meeting.  When I presented the proposal at the 2012 annual meeting I didn’t receive any negative feedback, so I’m hopeful that this is a project that the community can support.

Proposed construction activities:

  • Upgrade ditches and culverts to more safely convey floodwater along SE 175th Place, and improve its ability to infiltrate.
  • Enhance the infiltration capacity of an additional nearby closed depression by installing a new catchbasin to function as a drywell.  This will enhance infiltration of water collected along the east side of SE 175th Place and water that overflows and leaves the infiltration pond, ending up in this closed depression.
  • Excavate additional volume in the infiltration pond.
  • Excavate any fill material remaining on parcels King County purchased and removed homes.
  • Raise backyard of one house and place flood berm.
  • Install floodwall or berms to protect 4-6 homes from flooding.

If anyone has any questions or concerns, please contact me.

Thank you

Wendy Kara, P.E.

Engineer III, Capital Services Unit
Water and Land Resources Division
King County Department of Natural Resources and Parks
201 S. Jackson, Suite 600
Seattle, WA, 98104-8355
206 263-5004