128th Street Comprehensive Setback Levee Feasibility Study
Pierce County Planning and Public Works is conducting a feasibility study to help alleviate the flooding risk and impacts along both the right and left banks of the Puyallup River, near the 128th Street East bridge crossing. Though levees are present along both banks of the Puyallup River, this area experiences widespread flooding due to insufficient channel capacity and existing levee protection. Levee setback features help to minimize risk from flooding to nearby property and infrastructure and improve fish habitat.
The objective of this study is to evaluate how levee setbacks would benefit and effect the surrounding natural environment and community.
Throughout this study, Pierce County is committed to working with the community and nearby property owners to develop alternatives and prioritize potential future projects.
The 128th Street Comprehensive Levee Setback Feasibility Study will prioritize up to four setback levee projects to reduce flood risks to areas that have experienced repeated flooding. Of the four proposed levee setbacks, any one setback will likely influence all three of the others. Therefore, all the setbacks need to be evaluated concurrently.
Field crews have completed the data collection portion of the study. The technical team is now working on developing several hydraulic modeling scenarios which will be shared in the draft report anticipated in 2021.
The study is funded through the end of 2021. Pierce County is consulting with Environmental Science Associates (ESA) for conducting research for this study. Findings will consider stakeholder feedback and community safety as well as potential benefits to agricultural operations and salmon habitat.
(Click to Image to Enlarge)
The project area is east of State Route 162, west of McCutcheon Road East, south of 112th Street East and north of 144th Street East. Along both the right and left banks of the Puyallup River between river miles 15.7 and 17.5, bisected by the 128th Street East bridge crossing (and north of the City of Orting limits).
Capital project, part of the Pierce County River Flood Hazard Management Plan and Capital Facilities Plan.