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  • Priest Rapids Shoreline Stabilization - new plantings


Project Highlights:

  • Shoreline stabilization and restoration at three sites
  • 1,000 lineal feet of shoreline stabilized
  • Bio-engineered solution used
  • Woody debris added for sedimentation control
Priest Rapids Shoreline - stabilization plantings
Priest Rapids Shoreline - stabilization plantings

Project Summary

Client: Grant County Public Utility District
Location: Grant County, WA
Services Provided:
  • Civil Engineering
  • Landscape Architecture
  • Land Surveying
  • Construction Inspection
As often happens in dam-controlled reservoirs, over time sections of the shoreline along the Priest Rapids Reservoir had eroded and were in need of stabilization and restoration. The three sites identified for improvements amounted to approximately 1,000 lineal feet of shoreline.
Stabilization and restoration techniques included riprap, the use of native and upland plantings for cut slope bank stabilization, and the addition of woody debris to the shoreline to assist in sedimentation control and the creation of habitat. Solutions were chosen on a site by site basis.
MacKay Sposito provided upland and bathymetric surveying, calculated wave erosion forces, provided environmental engineering design, assisted in the permitting process, and provided construction inspection of the project. As part of the design, we completed detailed construction estimates for each site based upon truck haul routes and barge/crane usage.