1 / 18

Conjunctive Management & Groundwater Storage

Conjunctive Management & Groundwater Storage. California Water Plan Update 2003. Rich Juricich Division of Planning and Local Assistance. Phased Work Plan. Phase 1 (Public Review Draft - 2004) California Today, Future Uncertainties Regional Portfolios 25 Resource Management Strategies

juro
Download Presentation

Conjunctive Management & Groundwater Storage

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Conjunctive Management& Groundwater Storage California Water Plan Update 2003 Rich Juricich Division of Planning and Local Assistance

  2. Phased Work Plan • Phase 1 (Public Review Draft - 2004) • California Today, Future Uncertainties • Regional Portfolios • 25 Resource Management Strategies • Narrative 2030 Future Scenarios & Options • Work Plan for subsequent quantitative studies • Phase 2 (Final Update – Late 2004) • Select methods, tools, data and assumptions for more Quantitative 2030 Scenarios & Options • Phase 3 (Begins Update 2008) • Conduct Quantitative 2030 Scenarios & Options

  3. Economic Incentives Policy Urban Use Efficiency Agricultural Use Efficiency System Reoperation Urban Runoff Management Conjunctive Management & Groundwater Storage Water Transfers Conveyance Facilities Precipitation Enhancement Recycled Municipal Water Desalination Surface Storage Watershed Management Ecosystem Restoration Urban Land Use Management Working Lands Management Recharge Area Protection Source Water Protection Matching Water Quality to Use Drinking Water Treatment & Distribution Flood Plain Management Aquifer Remediation Water-Dependent Recreation Other R&D Resource Management Strategies

  4. Sources of Statewide or Regional Conjunctive Use Information Proposition 13 Applications, FY 2001-2002 Association of Groundwater Agencies, 2000 Conjunctive Use Report Natural Heritage Institute Studies U.S. Army COE Comprehensive Study

  5. Sources of Statewide or Regional Conjunctive Use Information Proposition 13 Applications • Includes both funded and unfunded projects from FY 2001-2002 • Will be updated with FY 2002-2003 projects

  6. Sources of Statewide or Regional Conjunctive Use Information AGWA report • Completed from agency survey by AGWA • May be issues with non standard approach

  7. Sources of Statewide or Regional Conjunctive Use Information NHI Yield Studies • Looks at re-operating surface reservoirs by pre-delivering water to groundwater banks • Significant yield comes from capture of additional flood peak in surface reservoirs • Uses only imported water to recharge, but assumes initial drawdown of “full” aquifers in Sacramento Valley

  8. Sources of Statewide or Regional Conjunctive Use Information NHI Storage Study • Looks at potential for increased in-lieu recharge to areas with available groundwater storage capacity • Potential areas are served by groundwater in close proximity to surface water distribution networks

  9. Sources of Statewide or Regional Conjunctive Use Information USACE Study • Looks at potential for using conjunctive use as a method to increase flood protection • Uses similar approach to NHI studies by pre-delivering surface water to groundwater banks • Available groundwater storage based on unused aquifer space (volume above high groundwater level)

  10. Potential BenefitsSpecified in Water Plan • Increase average annual water deliveries by 500 TAF • Potential for up to 2 MAF in increased deliveries if look at significant changes in system operation • Potential Increase in “New” Groundwater Storage from 9 - 20 MAF

  11. Potential Benefits(Increased Water Deliveries)

  12. Potential Benefits(Increased Groundwater Storage)

  13. Potential CostsSpecified in Water Plan • Range of project costs varies widely from $10 to $600 per acre-foot of increase in average water delivery • Weighted Average cost is $110 per acre-foot • Estimated cost for conservative implementation is $1.3 billion

  14. Lack of data Infrastructure and operational constraints Surface water – groundwater interaction Water quality Environmental concerns Funding needs Need for more Integration of water resources management Implementation Issues

  15. Recommendations • Continue with State financial and technical assistance, data collection, assessment • Give priority to projects with multiple benefits • Assist with and encourage development of regional groundwater management plans • Encourage interagency coordination (federal, State, local)

  16. Recommendations Cont’d • Encourage local agencies to manage vacant aquifer space • Encourage development of projects that generate source water for groundwater recharge • Streamline environmental permitting for projects with pre-defined benefits to wildlife and wildlife habitat

  17. What’s Next • Continue coordination with CALFED Common Assumptions to come up with agreed upon method to quantify resource strategies • Working to achieve consensus on analytical tools in 2004-2005 • Initiate quantitative work for Update 2008

  18. Discussion

More Related