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Central Valley Floodplain Evaluation and Delineation (CVFED) Program Presented for the FMA 2-D Modeling Symposium. September 4, 2012 California Department of Water Resources. CVFED Principle Objectives.

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Central Valley Floodplain Evaluation and Delineation (CVFED) Program Presented for the FMA 2-D Modeling Symposium

September 4, 2012

California Department of Water Resources

cvfed principle objectives
CVFED Principle Objectives
  • Develop foundational datasets, models, and tools to support legislative mandates and other FloodSAFE Programs
  • Develop informational floodplain maps and provide necessary information to cities and counties for their determinations related to urban level of flood protection
  • Develop new hydraulic models acceptable to USACE and FEMA
  • Provide information to support future planning studies and projects
cvfed model approach and platforms
CVFED Model Approach and Platforms
  • Calibrated 1-D riverine models for the State Plan of Flood Control systems (HEC-RAS)
  • 2-D hydraulic models representing floodplains outside of the riverine systems (primarily FLO-2D)
cvfed 2 d model purpose
CVFED 2-D Model Purpose
  • Primarily to perform floodplain delineations and overbank flood flow routings
  • To help define storage areas for riverine HEC-RAS models
cvfed flo 2d model construction
CVFED FLO-2D Model Construction
  • Grid set-up
  • Hydraulically significant overbank features such as levees, roads, and other embankments and openings
  • Hydraulically significant overbank streams or interior drainage canals
cvfed flo 2d model domains
CVFED FLO-2D Model Domains
  • FLO-2D Model Domains
  • 25 domains
  • Five modeling teams
  • Approximately 6,850 square miles

*Preliminary as of 6/19/2012.

cvfed 2 d model domains
CVFED 2-D Model Domains

*Preliminary as of 6/19/2012.

addressing modeling challenges
Addressing Modeling Challenges
  • Multiple Teams
        • Four geographic regions assigned to separate engineering support teams based upon their experience and knowledge of the study area
        • Program Management team to support DWR
        • Formation of H&H Coordination Work Group to discuss and share technical issues and how to resolve
        • Establish Program Guidelines, Standards and Procedures
addressing modeling challenges1
Addressing Modeling Challenges
  • Model Development Time
      • Developed Tools to Increase Efficiency and Improve Accuracy
      • FLO-2D GDS
      • FLO-2D Workshop with Software Developers
addressing modeling challenges2
Addressing Modeling Challenges
  • Formalize QA/QC Review Process
    • Checklists tracking QC and QA comments and resolution
    • Development of SharePoint site
    • Bi-Weekly Model Review Meetings
addressing modeling challenges3
Addressing Modeling Challenges
  • Models, Technical Memorandums and Workmaps
      • Documentation acceptable to FEMA, USACE and DWR
      • Accessible in DWR Library of Models and intended to support future users of the models
questions comments for more information contact yiguo liang yliang@water ca gov 916 574 1408

Questions & CommentsFor more information contact:Yiguo Liangyliang@water.ca.gov916.574.1408