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Chehalis Alternatives Report

This report provides essential elements required by the Flood Authority, focusing on water retention, Corps levee projects, and alternatives for critical facilities and I-5. It evaluates benefit-cost analysis, decision-making processes, and responsible parties for the overall process. The report scope includes basin-wide focus, analyzing catastrophic and more frequent floods, and ecological implications. Potential projects for analysis cover water retention, fish enhancement, Corps levees, bridges, and various alternatives like critter pads, buffers, flood proofing, buyouts, land use, forestry, and sediment management. The report timeline involves information collection till May, technical analysis in early May, policy workshop in mid-May, draft report in early June, and final report by the end of July.

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Chehalis Alternatives Report

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  1. Chehalis Alternatives Report Update for Flood Authority

  2. Report Required Elements • Water Retention • Corps Levee Project • Alternatives for I-5 and Critical Facilities • Other Alternatives • Benefit Cost • Decision Process and Responsible Parties

  3. Overall Process • Collection of existing and new information – Now to May • Technical analysis of alternatives – Early May • Policy workshop – Mid-May • Draft Report – Early June • Final Report – End of July

  4. Report Scope • Basin wide Focus • Catastrophic Floods • More Frequent Floods • Ecological Implications

  5. Basin Areas

  6. Potential Projects for Analysis • Water Retention • Fish Enhancement • Corps Levees • Alternatives for I-5 and Critical Facilities • Bridges • Other Alternatives like critter pads, buffers, flood proofing, buyouts • Land Use • Forestry • Sediment Management

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