1. June 30, 2014 The Delta and its relationship to Integrated Water Resources Management Randy Fiorini, Chair Peter Goodwin, Lead Scientist With contributions from many . . . .

2. California in Crisis Delta at the heart of the crisis Replacing conflict with inclusive collaboration Coequal Goals Policy-Science Partnership Investing in a more resilient future 2 3. Droughts / Floods 3 4. Growing Population 4 5. Groundwater, Local Resources & Conservation San Francisco PUC Hetch Hetchy System 1913 - Raker Act East Bay Municipal Utility District Mokelumne River Aqueduct 1929 US Bureau of Reclamation Central Valley Project 1940 - 1st water delivered (Contra Costa Canal) Hetch Hetchy System Mokelumne River Aqueduct CVP SWP CA Dept. of Water Resources State Water Project 1960 - Burns Porter Act 1973 - 1st water to So.Cal. 1 2 3 4 5 5 6. Rachel Carsons Book Inspired environmental movement Led to creation of US Environmental Protection Agency 6 7. National Environmental Policy Act California Environmental Quality Act Endangered Species Act Clean Water Act Porter-Cologne Water Quality Control Act Wild and Scenic Rivers and more 7 8. 2/3 of California residents rely on Delta water Irrigates up to 4million acres of California farmland 80% of California's commercial fishery species rely the Bay-Delta Habitat for 700 species, including 50+ threatened or endangered Hotspot for biodiversity Greatest loss of biodiversity 8 9. 9 Change in Delta land cover, early 1800s to early 2000s. Graphic by SFEI-ASC 10. Reclamation and Levees Farming and land subsidence Shipping channels and invasive species Recreation and introduced fish species Water delivery hub and fish declines 500,000 people now live behind levees 10 11. Water supply / Ecosystem BDCP Conveyance and Habitat Current Drought Levees Sea Level rise and set back levees Water quality SWRCB inflow / outflow Land use 11 12. 12 13. Land Subsidence Due to farming, erosion & peat soil oxidation .Feet Below Sea Level 30 20 10 5 -25 ft -20 ft -15 ft -5 ft 13 14. Michael Dettinger, USGS, SIO, La Jolla Joan Florsheim, UC Davis, Marty Ralph, NOAA/ESRL/PSD and others Atmospheric rivers, levees, and floodplains in the Bay-Delta system NOAAs California-Nevada Applications Program 15. -Lateral structure from satellite data (~400 km width & 2000 km long) - (10-20 Mississippis) 15 16. Largest 3-day storm totals in >30 yrs COOP records Ralph & Dettinger, BAMS, 2012 16 17. 0 6 hours: Islands flood with fresh water 17 Simulations courtesy of Dr. John DeGeorge 18. 12 24 hours: Salt water intruding into Delta 18 Simulations courtesy of Dr. John DeGeorge 19. 1 7 days: Salt water throughout Delta 19 Simulations courtesy of Dr. John DeGeorge 20. 30 days: A saline estuary 20 Simulations courtesy of Dr. John DeGeorge 21. 0 500 1000 1500 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 Delta Smelt There are other endangered species for example salmonids that have conflicting flow requirements (seasonally and spatially) 21 22. Court Actions to Protect Smelt Sacramento Reduce Pumping if Smelt are in this zone SWP Pumps CVP Pumps 22 23. 24 24. Hydraulic Era Dams Diversion Conveyance Enviro Era No Dams No Diversion Conservation Balance of infrastructure and the environment Societal Values 25. Develop enforceable plan to achieve coequal goals of ecosystem restoration and statewide water supply reliability Ensure progress towards those goals Oversee and coordinate activities in the Delta among various agencies Inform decision-making with best available independent science 26. Delta Plan draws upon existing state and federal laws and policies and ongoing programs to chart a big-picture course The Delta Plan is: 14 regulatory policies; 73 recommendations A plan that encourages state and local agencies to implement local and regional projects 27. Conservation & Efficiency 28. Conservation & Efficiency Reduce Flood Risk 29. Conservation & Efficiency Reduce Flood Risk Ecosystem Restoration 26 30. Conservation & Efficiency Reduce Flood Risk Ecosystem Restoration Supply Reliability & Storage 26 31. Conservation & Efficiency Reduce Flood Risk Ecosystem Restoration Supply Reliability & Storage Protect the Delta 26 32. Conservation & Efficiency Reduce Flood Risk Ecosystem Restoration Supply Reliability & Storage Protect the Delta Science & Adaptive Management 26 33. Through our joint federal-state partnership, and with science as our guide, we are taking a comprehensive approach to tackling Californias water problems From July 25, 2012 Governor Brown and President Obama Administration joint announcement on California's water future. In carrying out this section the Council shall make use of the best available science. California Water Code 85302(g) 34. Elements include: Conceptual Models Quantitative Models Journal articles Traditional knowledge Reports, conference papers Peer Review 35. Estimating salmon and steelhead response to watershed restoration: How much restoration is enough? P. Roni, G. R. Pess, T. J. Beechie, S. A. Morley (1) restoration of all accessible habitat within the watershed and (2) restoration of the average amount historically implemented in Puget Sound watersheds (8% of total restorable areas). 36. Under restoration scenario 1, the predicted mean increase in numbers was 1,459,254 (117%) and 285,302 (140%) for coho salmon parr and smolts Under scenario 2, the predicted mean increase in parr and smolts was 59,591 (5%) and 15,022 (7%) for coho salmon. However, given the large variability in fish response (changes in density or abundance) to restoration, 100% of the habitat would need to be restored to be 95% certain of achieving a 25% increase in smolt production for either species. 37. Combat Science to Collaborative Science Town Hall Meeting: October 2012 Develop a Shared State of Delta Knowledge Science should not be used as an excuse for inaction 38. Delta Science Plan One Delta, One Science Completed December 30, 2013 Delta Stewardship Council Delta Science Program 39. Organizing Science to Inform Policy and Management Science to Support Adaptive Management in a Complex System Scientific Foundation: Models, Monitoring, Research, Training, Communication and more 40. Everyones 30 41. A range of options: Expert memorandum/position paper e.g., Recommendations for Determining Regional Instream Flow Criteria for Priority Tributaries to the Sacramento-San Joaquin Delta Invited review panels e.g., Long-term Operations Biological Opinions Annual Science Reviews (2010-2013) Delta Collaborative Analysis and Synthesis - DCAS One Delta, One Science 42. Environmental Data Management in the Era of Big Data June 5-6, 2014 Inter-disciplinary Integrated Community Modeling Coming Fall 2014 Biennial Bay-Delta Science Conference October 28-30, 2014 One Delta, One Science 43. A shared list of science needs, questions, and actions A collaborative road map for science Grand Challenges of Agencies and NGOs Interim Science Action Agenda Workshop (May 6, 2014) One Delta, One Science 44. A common body of knowledge Peer review and best available science Technical support for adaptive Delta decision making Shared priorities actionable, relevant, legitimate and credible Transparent and accessible data and tools Management of scientific conflict One Delta, One Science 45. Delta Stewardship Council www.deltacouncil.ca.gov California in Crisis Delta at the heart of the crisis Replace conflict with inclusive collaboration Coequal Goals One Delta, One Science Policy-Science Partnership Invest in a more resilient future 46. Bay D el t a Co n ser vat io n Pl an BD CP Interti dal Marsh Fl oodpl ai n Channel Margi ns Agri cul tural Land oodpl ai np nFlF Terrestrial species habitat and food supplies for migratory waterfowl Food supplies and spawning and rearing habitat for many fish species gggri cccuA LLLaa u uurru al tu aala nnnd Sacramento- SanJoaquin RiverDelta Proposed Intakes Proposed Tunnel Alignment The Proposed BDCPis ECOSYSTEMRESTORATION IMPROVEDFLOW CONDITIONSTOBENEFIT FISHINTHEDELTA PROTECTED SPECIES56 150,000 ACRESOFRESTOREDAND PROTECTEDHABITAT WATERSUPPLYRELIABILITY 30MILES INLENGTH 9,000CFS* CAPACITY *Cubic Feet per Second GRAVITYFLOW TUNNELS2 INTAKES3 Theproposed project includes: Apart of Californiaswatermanagement portfolio Alongtermstrategytoimprovethereliabilityof Californias watersuppliesandimprovetheecosystemof theSacramento- SanJoaquinDelta AHabitat ConservationPlan TheBDCPprovidesawaytoimprovewatersupply reliabilityandecosystemhealth.