Flood Authority Meeting

November 1, 2012

Agenda

• Discuss Background Materials for Governor Recommendations

• Miscellaneous – EWS URL; EWS Training• Next Meetings for Flood Authority

Background Materials

• Governor’s Group Framework • Scoping Costs for Potential Dam• Revised Project List• Strategic Program for Buyouts and

Floodproofing• Multi-purpose Enhancement Projects

Framework

Basin-wide Approach to Significantly Reduce Flood Damage needs to include:• Large scale capital projects• Smaller scale capital projects• Land use management• Environmental Enhancements• Flood Warning and Emergency Response

Scoping for Potential Dam

Three Periods• Years 1-2, cost $3.7M to $5.7M• Years 3-5, cost $13.5M to $20.9M• Years 6-8, cost $9.7M to $16.3M

Key questions in Years 1-2 to Determine Feasibility of Dam

• What type (flood control only or multi-purpose) dam will be built?

• How will the dam be operated?• What environmental mitigation might be required?• What type of fish passage facilities will be needed and

what are the potential costs?• What is the impact on water quality and sediments in

terms of channel configurations?• Is the benefit-cost ratio of the selected alternative

positive?

Feasibility Work in Advance of Next Biennium

• Screw trap to study outmigration • Juvenile fish tagging to study upstream

movement of juveniles • Project management for agreement on work

scopes and hiring of consultants/internal resources

Alternatives for I-5

• Advance analysis with and without dam• Preliminary design costs

Smaller Scale Construction Projects

Strategic Program for Floodproofing and Buyouts

• Invest to address known problems - 128 repetitive loss structures, cost $10 15M‐

• Invest strategically in the future $250K Assess or model potential flood damages to existing

development under a variety of flood scenarios; Assess or model potential flood damages to

potential future development Use the CRS to assess and refine jurisdictions

current and potential future efforts.

Enhance aquatic species and ecological function

• Twenty projects recommended based on review by Ecology and DFW of Anchor QEA Enhancement Study. ($78M)

• Additional projects recommended by Chehalis Tribe

• Projects range from in cost from $300K to over $4M and benefit multiple species

• Need for overall strategy and prioritization of projects

Flood Warning

• No capital costs identified• Highlight need for on-going maintenance

Early Warning System

Chehalisflood.comChehalisflood.netChehalisflood.info

Dave Curtis Training 11/06/2012 (Seattle, NWS Office)

Next Steps

• Governor’s Group finalizes recommendations based on input from Flood Authority.

• Governor Decision • Announcement with Biennium Budget

Next Meetings