Delta Rick Management Strategy CWEMF Annual Meeting DRMS

Delta Rick Management Strategy CWEMF Annual Meeting – DRMS Discussion 02/27/2007 Delta-Suisun Marsh Branch Department of Water Resources 1

DRMS Development of DRMS l 2000 CALFED ROD Called for Risk Assessment of Delta Levees l 2005 – Levee Risk Analysis Team – Did Preliminary Work – Seismic only – Also Developed Project Scope for DRMS l 2005 – AB 1200 Enacted 2

DRMS - AB 1200 (CWC 139. 2) Sets General Framework for DRSM - DWR Shall Evaluate Potential Impacts on 50, 100, 200 -year projections on possible impacts to Delta from: - Subsidence Earthquakes Floods Climate Change & Combination of above 3

DRMS l AB 1200 Continued (CWC 139. 4) – DWR/DFG to Determine Principal Options for Delta – DWR to comparatively rate for ability to: • • • Prevent Disruption of Water Supplies Derived from Delta Improve the Quality of Water Supplies Derived from Delta Reduce Salts, Maintain Water Quality Preserve, Protect, Improve Delta Levees Protect Water Rights/Environments of River Systems Protect Infrastructure within Delta – DFG shall rate all options for its ability to restore salmon & other fisheries that use the Delta – Report Due – January 2008 4

DRMS l Contract Information – URS Corporation, Oakland, CA • Over 20 subcontractors – Contract is for $10, 000 • Approved by DGS - March 6, 2006 • 3 -year contract • Includes a new Li. DAR aerial survey of Delta 5

DRMS l Technical Advisory Committee: – – Dr. Raymond Seed, University of California, Berkeley Dr. Norm Abrahamson, Independent Seismological Consultant Gilbert Cosio, P. E. , MBK Engineers Dr. Wim Kimmerer, San Francisco State University, ERP Science Board – Dr. Peter Moyle, University of California, Davis, ERP Science Board – Roger Fujii, United States Geological Survey – Jon Burau, United States Geological Survey 6

DRMS STEERING COMMITTEE Includes Members Representing: – – – – – TAC Members USACE DFG CBDA USBR Delta/Suisun Marsh Experts Public SWC CVP Contractors 7

DRMS Phase 1 • Development of a Risk Analysis to Evaluate the Impact to Delta Levees from: – – – Floods Earthquakes Subsidence Normal Conditions Climate Change • Determine Consequences to Economy & Eco-System based on Risks Found • Risk Assessment Report due mid-March ’ 07 – Public Draft mid-April 2007 – Independent Review by CALFED – Apr – Jun ‘ 07 8

DRMS Phase 2 l Development of Risk Reduction/Risk Management Strategies for Long-Term Management of Delta – – Draft Final Report Due August ’ 07 Public Review Draft – Sep ’ 07 Independent Review by CALFED – Sep – Nov ’ 07 DRMS Final Report – NLT Jan 1, 2008 9

DRMS l Independent Review Panel (IRP) – CALFED ISB Assembled appropriate review team – IRP members will meet w/ consultant team, DWR/DFG/COE, TAC/SC members, others – Review methods, analyses & findings – Review Phase 1 and 2 Reports – Produce formal reports on findings 10