Public Notices

Open House: Feasibility Study of the Portland Metro Levee System (PMLS)

Published Aug. 16, 2019

Public Notice

Open House
Feasibility Study of the Portland Metro Levee System (PMLS)

Multnomah County, Oregon

The U.S. Army Corps of Engineers (Corps), in partnership with Levee Ready Columbia, will hold an informational meeting on the Portland Metro Levee System Feasibility Study on August 28, 2019 at Multnomah County Drainage District, 1880 NE Elrod Drive, Portland. The meeting will begin at 6:00 pm, with the Corps providing updates from the Open Houses conducted last December 2018.

The event, which is open to the public, will provide an update on the feasibility study including refinement of alternatives, technical information and analysis conducted to date, and the  next steps in the feasibility process. 


Location: Multnomah County Drainage District
1880 NE Elrod Drive
Portland, Oregon 97211

Date: Wednesday, August 28, 2019

Time: 6:00 PM - 7:00 P.M.

PROJECT DESCRIPTION: The U.S. Army Corps of Engineers has initiated a Feasibility Study focusing on Flood Risk Management of the Portland Metro Levee System in partnership with the Columbia Corridor Drainage Districts (CCDD) Joint Contracting Authority. CCDD consists of four drainage districts: Peninsula Drainage District #1, Peninsula Drainage District #2, Multnomah County Drainage District and the Sandy Drainage Improvement Company. The study area includes 27 miles of levees along the lower Columbia River within the Portland Metropolitan Area, running from Sauvie Island to the Sandy River.

The levee system is experiencing signs of structural vulnerabilities during high water, including sloughing, boils, and seepage. The three-year federal feasibility study process will lead to a recommendation to Congress for federal investment in addressing the problem areas within levee and drainage system.

The study will focus on developing an integrated plan to address potential system failures, meeting current levee safety standards, and identifying potential impacts from future changes including system consolidation, changing water flow conditions and potential operational changes to the Columbia River System.

The Non-Federal Sponsor on the project is the Columbia Corridor Drainage Districts (CCDD) Joint Contracting Authority, the Multnomah County Drainage District (MCDD), has been granted decision authority to act on behalf of the four drainage districts. The feasibility study is authorized in Section 216 of the Flood Control Act of 1970.

FEASIBILITY STUDY INFORMATION:  Information about the feasibility study may be found at:

ADDITIONAL INFORMATION AND COMMENTS:  Questions regarding the feasibility study may be directed to Laura Hicks, Project Manager,, or to the address below. Mailed comment should be sent to:

U.S. Army Corps of Engineer District, Portland
Attn:  CENWP-PM, Laura Hicks
P.O. Box 2946
Portland, Oregon 97208-2946