Columbia Stock Ranch

The US Army Corps of Engineers (USACE), Portland District plans to construct ±6,000 linear feet of setback levee as part of the Columbia Stock Ranch (CSR) project in the Lower Columbia River Estuary.  In addition to the new ±15 to 25‑foot high levee, the project includes:

  • 12,000 linear feet of tidal channel excavation
  • Overflow channel excavation
  • Breaching the existing levee in three places
  • Construction of a tide box structure
  • Construction of a levee closure structure for the railroad
  • Construction of access roads and haul roads
  • Construction of two channels under the railroad embankment

Material from the tidal channel, excavations, plus material from a local dredge disposal site will be used to construct the new levee with balanced excavation to embankment volumes. Foundation Engineering is providing geotechnical services including site analysis, recommendations for design and construction, and evaluation of the borrow soils.

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