Sustainable Groundwater Management Act (SGMA) · 14/05/2019 · Describe current & historical...
Transcript of Sustainable Groundwater Management Act (SGMA) · 14/05/2019 · Describe current & historical...
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Sustainable Groundwater Management Act (SGMA)
May 14, 2019Groundwater ManagementProgram
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Groundwater managementin California is best
accomplished locally.“
”Former Governor Jerry Brown
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GSAs
DWR
State Water Board
SGMA
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4
Central Valley
Central Valley
Subbasin
Basin
Groundwater in SGMA
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FormAgencies
DevelopPlans
Achieve Sustainability!
ImplementPlans
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Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
SurfaceDepletion
What is Sustainability?Basin operated within its sustainable yield and not experiencing undesirable results:
Significant and unreasonable…
…caused by groundwater conditions occurring throughout the basin.
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Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
SurfaceDepletion
What is Sustainability?Basin operated within its sustainable yield and not experiencing undesirable results:
“Depletions of interconnected surface water that have significant and unreasonable adverse
impacts on beneficial uses of the surface water.”
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Surface water that is hydraulicallyconnected at any point by a
continuous saturated zone to the underlying aquifer and the overlying
surface water is not completely depleted.
“”Cal. Code Regs. tit. 23 § 351(o)
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Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
Land Subsidence
LoweringGW Levels
Storage Reduction
SeawaterIntrusion
DegradedQuality
SurfaceDepletion
What is Sustainability?Basin operated within its sustainable yield and not experiencing undesirable results:
“Depletions of interconnected surface water that have significant and unreasonable adverse
impacts on beneficial uses of the surface water.”
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Groundwater Conditions AssessmentHydrogeologic Conceptual ModelWater BudgetSustainable Management CriteriaManagement Actions & ProjectsMonitoring Network
KeyGSP Requirements
Groundwater Conditions AssessmentHydrogeologic Conceptual ModelWater Budget
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DemonstrateUNDERSTANDINGDescribe current & historical groundwater conditions
Identify and characterize interconnected surface water systems
Estimate quantity and timing of depletions
Identify GDEs
Estimate groundwater & surface water budgets
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Groundwater Conditions AssessmentHydrogeologic Conceptual ModelWater BudgetSustainable Management CriteriaManagement Actions & ProjectsMonitoring Network
KeyGSP Requirements
Groundwater Conditions AssessmentHydrogeologic Conceptual ModelWater BudgetSustainable Management Criteria
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Interim Milestone
Sustainable Management Criteria
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Rate or volume of surface water depletions caused by groundwater use:
Location
Quantity
Timing
Groundwater elevation may be used as a proxy indicator
Minimum Threshold
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Where a local groundwater sustainability agency is not managing its groundwater
sustainably, the state needs to protect the resource until…a local groundwater
sustainability agency can sustainably manage the groundwater basin.
“
”California Legislature
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Board only steps in when local efforts fail.
Temporarily protects the basin until locals come up-to-speed.
Backstop is triggered bySGMA deadlines.
1
2
3
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No GSAor
Alternative
TRIGGERING the BACKSTOP
Critical overdraft
&No plan or
DWR fails plan
No planor
DWR fails plan
DWR fails plan
& Surface
depletions
No GSAor
Alternative
Critical overdraft
&No plan or
DWR fails plan
No planor
DWR fails plan
DWR fails plan
& Surface
depletions
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TriggerIntervention
BasinProbation
InterimPlan
Issues NotFixed?
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Significant Depletions of Interconnected Surface Waters
Reductions in flow or levels of surface water that is hydrologically connected to the basin such that the reduced surface water flow or levels have a significant and unreasonable adverse impact on beneficial uses of the surface water
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Agencies
SWRCBGSAs
Instream needs
Roles Outcomes
SGMA provides forum for coordination
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Groundwater managementin California is best
accomplished locally.“
”Former Governor Jerry Brown
Natalie StorkSam [email protected](916) 322-6508
Groundwater ManagementProgramwww.waterboards.ca.gov/gmp
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Appendix
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GSP
GSADevelops
Plan
GSAAdopts
Plan
DWREvaluates
Implementation
DWREvaluation &Assessment
Review Process
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AVOIDING the BACKSTOP
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The interim plan may include the following: a) Restrictions on groundwater extraction. b) A physical solution. c) Principles and guidelines for the
administration of rights to surface waters that are connected to the basin.
“
”SGMA Section 10735.8 (c)
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Except as provided in subdivision (e) [when incorporating elements of an existing GSP], the interim plan shall be consistent with water right priorities....
SGMA Section 10735.8 (d)
“
”
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groundwater BASINProbationary
State Water Board makes decisions for locals
Board gathers data
May require meters
Opportunity to fix issues
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ExtractionREPORTSReports are submitted annually.
Reports require…well location & capacitymonthly extraction volumesplace & purpose of use
Reports must be filed electronically.
Information on extraction reports is available at www.waterboards.ca.gov/water_issues/programs/gmp/reporting.shtml.
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Board works with individual pumpers
Examination of water rights
Informational orders
Data transparency
Well registration
Fees
BoardINVESTIGATIONS
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Collect fees
Identify extractors
Notify extractors
Reviewreports
Collect reports
Reporting Process
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BaseFiling Fee
(per well)
300$
LateFee
(per month)+
25%
*special studies extra
Volumetric Rate
(per acre-foot)+
Unmanaged
25$
InterimPlan
55$
Probation
40$
*
*
FEES: Pumpers who have to report
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TriggerIntervention
BasinProbation
InterimPlan
Issues NotFixed?
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InterimPLAN
Corrective Actions
Schedule
MonitoringPlanEnforcement
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Physical Solutions
Demand Management
Decrease demandIncrease supply
Storm water capture
Develop local supply
Water imports
Desalination
Reduce groundwateruse
*most likely corrective action
*