Last update: 07/14/2009
Deschutes Estuary Feasibility Study (DEFS)
The Deschutes Estuary Feasibility Study, which began in 2003, is now complete.
The study was done to determine the feasibility of restoring a naturally functioning estuary as a long-term alternative to maintaining Capitol Lake, a man-made water body.
Summaries of Technical Reports (
)
- Engineering Design and Cost Estimates report
- Hydraulic and Sediment Transport Analysis
- Reference Estuary Study and Biological Conditions Report
- Net Benefit Analysis
Complete Technical Reports ()
- Deschutes Independent Technical Review
Report
assesses the scientific objectivity and technical merits of the four scientific reports done as part of the Deschutes Estuary Feasibility Study - Deschutes Estuary ITR
PowerPoint presentation
by Stephen Crooks Ph.D., on behalf of the ITR team. - Engineering Design and Cost
Estimates report
describes the results of an analysis of the engineering feasibility and likely cost of the three estuary restoration alternatives that are under consideration (Moffat & Nichol Engineering Design and Cost Estimates presentation) - Hydraulic and Sediment Transport Analysis
(26 MB)
describes where sediment at the bottom of Capitol Lake would go if an estuary was restored. What would be impacts of sediment moving from the lake into Budd Inlet? (Appendix - 1 MB) - Reference Estuary Study and Biological Conditions Report
(4 MB)
examines other Puget Sound estuaries to determine how they function. Determine what type of habitat will likely form and how long it will take if an estuary is restored. (Potential restoration habitats map - courtesy The Olympian) - Net Benefit Analysis
compares the benefits and costs of restoring the estuary, dredging the lake, or doing nothing. Consider the community values and infrastructure replacement costs and impacts including Stakeholder Involvement Report - Final Deschutes Estuary Feasibility Report (Spring 2008)
Other Information
- Deschutes River Estuary Restoration Study - Public discussion Forum
- Net Benefit Analysis Community Workshop - Q & A Session
For more information
- Curtis Tanner, Deschutes River Estuary Feasibility Study project manager, (360) 902-2815 or curtis_tanner@fws.gov
- Nathaniel Jones, Senior Facilities Planner, (360) 902-0944 or njones@ga.wa.gov
