Uploaded on

 

More in: Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
420
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. CALIFORNIA LEVEE EVALUATIONS PROGRAMSociety of American Military Engineers2009 Water Conference, October 26-28, 2009Presented by Mike InamineCalifornia Department of Water Resources
  • 2. Central Valley
    Flood Control
    System Protects:
    Over 1/2 million people
    Over 1.5 million acres of cultivated land
    200,000 structures with an
    estimated value of $56 billion
    Public trust resources
    Water supply to two-thirds of the
    State’s population and industry
    The system is aging and under-funded
  • 3. California Central Valley Challenges
    Early design and construction inadequate by modern standards.
    The system was successfully designed to protect pioneer farms. Behind many levees are homes, not farms.
  • 4. Central Valley Challenges (cont’d)
    Current system has many deficiencies and is aging.
    Rivers now erode levees in many reaches.
    Recently, financial burden shifted to the State.
    State is liable. Every taxpayer is affected by failures.
    Land use decisions often increase risk.
  • 5. 5
    FloodSAFE California--a multi-faceted initiative to improve
    public safety through integrated flood management
    Statewide Program
    4 Major Activities
    Primarily funded by Propositions 1E and 84
    Emphasis on State-federal system in Central Valley and Delta
    5
  • 6. FloodSAFE Strategic Plan
    Work Breakdown of FloodSAFE Implementation
    • Evaluations and Engineering functional area
    • 7. CVFPP key planning document
    • 8. Levee Evaluations important component in all functional areas
    FloodSAFE Implementation Plan
    Operations and Maintenance
    Emergency Operations
    Projects and Grants
    Planning
    Evaluation and Engineering
    Floodplain Risk Management
    Administration and Management
  • 9. Central Valley Flood Protection Plan System Analysis
  • 10. Levee Evaluations Program Purpose
    In support of the Central Valley Flood Protection Plan (CVFPP) and other flood management related programs, evaluate State/Federal project levees and appurtenant non-project levees, to determine if they meet defined geotechnical criteria and, if appropriate, identify remedial measure(s) to meet those criteria.
  • 11. Goal #1 – Support the CVFPP and CVFED projects, federal and local flood management projects, local FEMA certification efforts and the legislative mandate of urban, 200-year flood protection by 2025.
    Goal #2 – Support federal & local flood management programs by providing geotechnical data, analysis and remedial alternatives to local, State and federal stakeholders.
    Goal #3 – Improve geotechnical information exchange methods between State, local and Federal flood management agencies.
    Goal #4 - Identify critical levee repairs
    Levee Evaluation Program Goals
  • 12. Levee Evaluations Work Breakdown
    Levee Evaluations
    Technical Review
    Non-Urban
    (NULE)
    Urban
    (ULE)
    Technical Policy
    Central Valley Flood
    Protection Board
    Seismic Policy
    Interim Levee
    Design Criteria
    Capital Projects
    Vegetation
    Research
    Corps Projects
  • 13. Central Valley Levees
    Project (State-Federal)
    Appurtenant Non-Project
    Other Non-Project
    Urban Project 350 miles
    Urban Non-Project 100 miles
    Urban Total 450 Miles
    Non-Urban Non-Project 400 miles
    Non-Urban Project 1250 Miles
    Non-Urban Total 1650 Miles
  • 14. ULE STUDY AREA
    Marysville/Yuba City
    Detail
    Area
  • 15. NULE STUDY AREA
  • 16. Overview of ULE and NULE
    • Supports Central Valley Flood Protection Plan, Federal and Local Efforts
    • 17. Urban Levee Evaluations
    Populations of 10,000 or more
    200-year legal mandate helps define deliverable
    Geotechnical Data Report
    Geotechnical Evaluation Report
    • Non-Urban Levee Evaluations
    Populations less than 10,000
    Partners/stakeholder driven
    Ongoing CVFMP planning process defines deliverable
    Geotechnical Data Report
    Geotechnical Assessment Report
    Geotechnical Evaluation Report
  • 18. 2
    ULE Phased Implementation
  • 19. NULE Phased Implementation
    Phase 2:
    Exploration, Testing
    & Analysis
    Geotechnical
    Evaluation Report
    Phase 1:
    Data Analyses
    Geotechnical
    Assessment
    Report
    Site Reconnaissance,
    Data Collection
    &Geomorphic Studies
    Phase 1 applied throughout study area
    Phase 2 contingent on Central Valley Flood Management Planning process
  • 20. NULE Phase 1
    Assess levees with respect to design water surface elevations
    Levee Assessment Tool (LAT)
    Categorize levee segments as:
    • Deficient
    • 21. No obvious deficiencies
    • 22. Insufficient information
    Remedial Alternative Cost Estimate Report (RACER)
    Phase 2:
    Exploration, Testing
    & Analysis
    Geotechnical
    Evaluation Report
    Phase 1:
    Data Analyses
    Geotechnical
    Assessment
    Report
    Site Reconnaissance,
    Data Collection
    &Geomorphic Studies
  • 23. Overview of Development ofLevee Assessment Tool (LAT)
    Modes of levee failure
    Associated hazard indicators (existing data)
    Rating scale for each hazard indicator
    System for compiling the hazard indicators into a Weighted Hazard Indicator Score (WHIS)
    Methodology for comparing the WHIS to past performance to categorize the levee
  • 24. DEFICIENT
    Underseepage Hazard Score
    NO OBVIOUS
    DEFICIENCIES
    Sand Boils Boils Heavy Seepage Light Seepage None Reported Documented Past Performance
  • 25. NULE Phase 2
    Early Phase 2 for levees protecting populations of 5,000 or more (“no regrets”)
    CVFMP process to identify additional locations, such as:
    • Levees that protect critical infrastructure
    • 26. Levees with critical damage sites
    • 27. Levees protecting small and legacy communities
    Analyses
    • Design water surface elevation
    • 28. Top of levee check
    Update RACER
    Phase 2:
    Exploration, Testing
    & Analysis
    Geotechnical
    Evaluation Report
    Phase 1:
    Data Analyses
    Geotechnical
    Assessment
    Report
    Site Reconnaissance,
    Data Collection
    &Geomorphic Studies
  • 29. Technical Activities
    2
  • 39. Independent Consulting Board
    Christopher Groves
    Skip Hendron
    William Marcuson
    Raymond Seed
    George Sills
    • Expert technical oversight with regard to:
    Safety
    Performance
    State-of-practice
    Economy
    • Advise DWR on :
    Analyses methods
    Criteria
  • 40. Time and Money
    Schedule:
    ULE final deliverable: March 2011
    NULE final deliverable: August 2011
    Interim deliverables available as produced
    Cost:
    ULE $113M
    NULE $ 87M
    Total $210M
  • 41. Program Challenges
    Strategic, tactical differences between ULE and NULE
    Financial limits
    Conform analyses with varying geotechnical data
    Concurrent Partner/Stakeholder process
    Differing phased approaches
    “Theory and calculation are not substitutes for judgment, but are the basis for sounder judgment.” Ralph Peck
    • 200-year urban mandate
    • 42. Concurrent design and construction projects
    State budget complications
    Unprecedented scope
  • 43. Questions?