Post on 14-Aug-2020
Marysville Levee
Commission
Outline CVFPP Goals & Objectives Highlights of Draft Feather River RFMP Integration between Flood Protection,
Agriculture and Wildlife and Floodplain Uses Proposed Projects Project Evaluation &
Prioritization Criteria What is Next? Discussion & Comments
Central Valley Flood Protection PlanPrimary Goal of CVFPP: Improve Flood Risk Management
Implementation of structural and nonstructural actions for protecting urban areas and lands of Sacramento and San Joaquin river basins, and the Delta
System‐wide investment approach
Sustainable, integrated flood management
Purpose of the RFMPBuild upon the CVFPP by describing
regional flood management challenges and deficiencies, identifying solution
strategies and projects, setting priorities, and developing a local financing plan for their implementation which leverages
local, State, and federal funding opportunities.
Highlights of Draft RFMP
Flood Management Challenges and Constraints Flood Hazards in Feather River Region Solution Strategies and Management Actions Integration of Flood Management with Agriculture and Wildlife
Structural and Operational Alternatives Formulation Residual Risk Management Alternatives Alternatives Evaluation, Comparison and Prioritization Financial Planning
Urban and Urbanizing Achieving 200‐year flood protection
Small Communities Achieving 100‐year flood protection
Rural Agricultural Areas Improve existing flood protection
Flood System Sustainability Improve the flexibility and sustainability of the system
RFMP Flood Protection Goals
Agricultural Sustainability Support and strengthen the regional economy Nexus of habitat and agricultural practices Sustain agricultural uses of regional floodplain
Multiple Objectives Environmental restoration Agricultural enhancement Improved water quality, water
supply, recreation, etc.
Statewide and Regional Projects Describe opportunities to link regional projects to systemwidegoals and objectives
RFMP Flood Protection Goals
Challenges and Constraints Regional Levee System, Channels & Reservoirs Fisheries and Wildlife Habitat Operations and Maintenance Constraints Water Quality Increasing Flood Risks Re‐evaluation of Levee Performance Evolving Levee Standards Floodplain Re‐mapping and Levee De‐certification Land Ownership and Land Use Conflicts Funding Climate Change
Flood Hazards in the Region Reservoirs: Flood Risk Reduction and Potential Hazards Oroville New Bullards Bar Camp Far West
Levees SPFC Facilities Floodway Levees
Channels and Floodplains
Solution Strategies and Management Actions
State Systemwide Investment Approach (SSIA) includes recommendations for improvements to structures and operations of:
Levees Channels and Bypass Systems Reservoirs Fisheries and wildlife habitat Operations and Maintenance
Levees: Raise crown elevation Increase levee cross section and improve its geometry Provide stability berms buttress the levees Provide waterside berms and erosion protection on the water side Provide cutoff walls, seepage berms, or relief wells Reconstruct deficient levees in place or construct levee setbacks Provide off‐stream transitory storage Provide improved access and visibility to facilitate inspection and
flood fighting activities Remove or improve levee penetrations Provide overflow protection Provide vegetation management including root barriers
Solution Strategies and Management Actions
CVFPP physical and operational elements applicable to Feather River region:
Forecast Coordinated Operations and Forecast Based Operations (FCO and FBO)
New Bypass Construction and Existing Bypass Expansion
Flood Structure Improvements Urban Improvements Small Communities Improvements Rural Agricultural Area Improvements Ecosystem Restoration
Solution Strategies and Management Actions
The agricultural and environmental heritage of the Feather River region should be preserved and enhanced through improved flood protection
Integration of Flood Protection, Agriculture & Environment
Maintaining agricultural operations ensures:
• Economic vitality of the region preserved and enhanced• Limiting of dense residential development in flood‐prone areas
• Environmental benefits of farming• Access to resource stewardship and land management know‐how of farmers
Integration of Flood Protection, Agriculture & Environment
Benefits of Ecosystem Enhancement in Feather River Region: Increased floodplain
inundation compatible with agriculture
Increased potential for channel migration
Increased extent of riparian vegetation
Improved fish passage at State Plan of Flood Control facilities (SPFC)
Integration of Flood Protection, Agriculture & Wildlife
Flood Protection Projects Benefit Agricultural & Environmental
• 200‐year flood protection for region
• Flood risk reduction for agricultural land
• Over 2,400 acres returned to the floodway for environmental restoration and/or agricultural leaseback opportunities
TRLIA’s Bear and Feather River levee setbacks provide:
Structural and Operational Alternatives Formulation
Feather River West Levee Project (FRWLP): SBFCA is planning to improve 44 miles of levees from Thermalito Afterbaysouth to the Sutter Bypass
Reclamation District 10
Structural and Operational Alternatives Formulation
Marysville Ring Levee System 4‐phase, $90.5
million project
Structural and Operational Alternatives Formulation
TRLIA leads effort to achieve 200‐year flood protection for RD 784
Structural and Operational Alternatives Formulation
ID Description Estimated Cost CommentsL1 Phase IV—Complete WPIC
levee improvements$15.2 M
To be constructed 2013-2015
L2 Resolve ROW and encroachment issues for levees protecting urban areas
$5 M – $10 MTo be addressed 2013-2015
L3 Yuba Goldfields $15 M - $50 MAlternative analysis underway now to adopt as part of the SPFC
L4 Olivehurst Detention Basin $0.0 MConstruction completed. Action is to adopt as SPFC facility
RD 1001:
Structural and Operational Alternatives Formulation
RD 1001: Continued
Structural and Operational Alternatives Formulation
RD 2013 – Wheatland
Structural and Operational Alternatives Formulation
ID Description Estimated Cost
Comments
L1 FSRP Identified Critical Repairs, Bear River north levee, RD 817
$1.75 m
L2 Dry Creek develop new hydrology
L3 Dry Creek south levee and San Joaquin ditch (3.9 mi) improvements feasibility study and environmental documentation to formulate preferred alternative approach
L4 Bear River north levee ULDC compliance evaluation.
Bear River North Levee Rehabilitation Project June 2010. Work completed, just need eval.
L5 Implement Dry Creek south levee 200-year ULDC levee improvements
Based on results of feasibility study
L6 Develop more accurate FEMA 100-year maps for the existing developed area that floods from Dry Creek
Residual Risk Management Alternatives
Enhanced Flood Emergency Response Enhanced Flood System Operations and Maintenance Floodplain Risk Management
National Flood Insurance Program Amendments for Rural‐Agricultural Areas
Development Impact Fee Programs Agricultural Conservation Easements Levee Flood Protection Zones
Evaluation Criteria Financial Feasibility Implementation Feasibility Flood risk reduction benefits
CVFPP’s “worst‐first” approach Comparative effectiveness Consistency with regional goals and objectives Consistency with CVFPP
USFWS Habitat Evaluation Procedure (HEP) Multi‐objective projects
Grouping of Priority Lists1. Create a master list of actions Collaborate
to formulate prioritized list2. Organize actions by sub‐basin3. Subdivide actions into categories: Levee improvements Reservoir structural and operational
improvements Channel improvements Residual risk improvements
Prioritization Criteria Capital Costs Operation and Maintenance Costs Annualized Costs Flood Damage Reduction Benefits Ecosystem Benefits Readiness Funding Opportunities Acceptability
Funding• Economic profile evaluation
Employment /Land Use /Demographics /Growth• Funding evaluation
Non‐local: State /FederalLocal
• Funding capacity assessment• Conclusions
Matrix of Projects w/Allocation of Funding• Funding Issues
Local Funding ConstraintsEconomic Factors
Local Funding Examples
Ongoing & Potential Projects Levee Improvements/Repair (Urban & Non‐urban) System Maintenance Reservoir Re‐operation Channel Maintenance Improvements Erosion Repair Vegetation Management Habitat Enhancement, Primarily through Agricultural Practices
Ongoing Restoration Actions by TRLIA and SBFCA
Next Steps• Comments on Working Draft– November 2013
• Final Draft – February 2014
• Final Workshops & Agency Approvals – March 2014
• Final Plan – May 2014
• Final Plan Distribution – June 2014
Discussion