Managing CaliforniaManaging California s Water: ’s Water ... · California’s freshwater fishes...
Transcript of Managing CaliforniaManaging California s Water: ’s Water ... · California’s freshwater fishes...
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Managing California’s Water: Managing California s Water: From Conflict to Reconciliation
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A Collaborative Effort by an Interdisciplinary TeamInterdisciplinary Team
Biologist:Peter Moyle UC DavisPeter Moyle, UC DavisEconomists:Ellen Hanak, PPIC*Ariel Dinar, UC RiversideRichard Howitt, UC DavisEngineer:Engineer:Jay Lund, UC Davis*Geologist:Jeffrey Mount UC DavisJeffrey Mount, UC DavisLawyers:Brian Gray, UC HastingsB Thompson Stanford
Supported with funding fromS.D. Bechtel, Jr. Foundation, The David and Lucile Packard Foundation, Pisces
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Buzz Thompson, Stanford*Lead authors
Foundation, Resources Legacy Fund, Santa Ana Watershed Project Authority
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OutlineOutline
C lif i ’ California’s water systemThe ecosystem crisisP i i t t iPromising strategies
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A Highly Engineered Water SystemA Highly Engineered Water System
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A Precarious Supply HubA Precarious Supply Hub
F il lFragile leveesImperiled ecosystem
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Agriculture 75%, Urban 25% of Supplies for Human UsesSupplies for Human Uses
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30
35
40
s)
Total
20
25
30
-feet
(Mill
ions
Agriculture
10
15 Acre
-
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1960 1967 1972 1980 1985 1990 1995 2000 2005
Urban
Source: Authors’ calculations using Dept of Water Resources data on applied water use
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OutlineOutline
C lif i ’ California’s water systemThe ecosystem crisisP i i t t iPromising strategies
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The Fish Are LosingThe Fish Are Losing
100%D it d d f
California’s freshwater fishes
4438
22
80%
90%Despite decades of well-intentioned effortsEfforts now threaten
6960%
70% Reasonably Secure
Special
Efforts now threaten water supply reliability and flood protection
5053
30%
40%
50% Concern
Listed
Extinct
Conditions will worsen with climate warming, more invasive species
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10%
20%
30% Extinct more invasive species
7 7 70%
1989 1995 20108
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Dams and Diversions Are Major FactorsFactors
Bl k f t Blockage of upstream habitatAlteration of Alteration of downstream habitatDisturbance of natural flow patterns
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So Are Losses of Floodplains and WetlandsWetlands
H bit t d li f Habitat declines from water and land developmentp
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And Water Quality Is Still a Major ConcernConcern
Cl W t l h Clean Water laws have reduced “point” source pollutionpBut runoff from farms, cities still not well
g dmanagedAnd few controls on new chemicalsnew chemicals
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OutlineOutline
C lif i ’ California’s water systemThe ecosystem crisisP i i t t iPromising strategies
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Shift to Ecosystem Reconciliation ApproachesApproaches
Use natural flow regimesSet back, remove lleveesReduce contaminantsLimit new invasivesLimit new invasivesRe-operate, retire dams
Matilija Dam
Improve hatcheriesSpecialize some streams
13Yolo Bypass
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Multiple Benefits Possible with Shift in Flood ManagementShift in Flood Management
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Much Can Be Done Within Existing Environmental LawEnvironmental Law
E d d S i A ll hif i fEndangered Species Act allows shift in focus– From single species to ecosystems
From single stressor to multiple stressors– From single stressor to multiple stressorsOver time, more flexible implementation rules may be neededmay be needed
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Treat Water As a Public Commodity: Balance & FlexibilityCommodity: Balance & Flexibility
Build on “reasonable use” and “public trust” Build on reasonable use and public trust doctrines– Manage groundwaterManage groundwater– Promote conservation & water market– Reallocate some supplies to environment
Fund public management aspects– Public goods chargeg g– Special mitigation fees
Improve adaptive capacity– Review contract, license, & permit terms
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Address Coordination FailuresAddress Coordination Failures
Decentralized “adhocracy” misses adhocracy misses opportunitiesCoordination also a problem for state, federal agencies
A simplified “conceptual model”
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A simplified conceptual model of state and federal agency roles
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Integrate Within Large Watersheds: Supply Quality Floods HabitatSupply, Quality, Floods, Habitat
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Proposed regional stewardship authorities
Current integrated regionalwater management areas
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Use Cooperative Approaches to Reduce CostsReduce Costs
State, feds set goals, standards, deadlinesLocals jointly develop implementation and
f lenforcement plans– Groundwater basins
Water quality– Water quality– Environmental flows– Flood protectionFlood protection– Integrated watershed management
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For More InformationFor More Information
Book Book – Free pdf from ppic.org– E-reader and paperback from amazon.com
Executive summary – Free from ppic.org
Interview appendix – Free from ppic.org
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Managing California’s Water: Managing California s Water: From Conflict to Reconciliation
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Notes on the use of these slidesNotes on the use of these slides
Th lid t d t These slides were created to accompany a presentation. They do not include full documentation of sources, data samples, methods, and interpretations. To avoid misinterpretations, please contact:
Ellen Hanak: 415-291-4433, [email protected]
Thank you for your interest in this work.
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