Efficient Water Management Practices (EWMPs)

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Oakdale Irrigation DistrictAgricultural Water Management PlanBriefing on 2015 UpdateJanuary 5, 2016

1/5/2016

OID AWMP Update Briefing

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OID AWMP Update Briefing

1/5/2016

Outline

•Agricultural Water Management Plan (AWMP)Process

•Water Balance Analysis and Summary

•Efficient Water Management Practice (EWMP)Status and Positions

•Water Resources Plan Implementation Status

•Drought Management Plan and DroughtImpacts Summary

•Questions and Discussion

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OID AWMP Update Briefing

1/5/2016

•AB3616 - Agricultural Water Suppliers EfficientWater Management Practices Act

•Enacted in 1990

•Established Agricultural Water ManagementCouncil (AWMC)

•Voluntary preparation AWMPs

•Initial OID AWMP adopted in September2005

Regulatory Context (AB3616)

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OID AWMP Update Briefing

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•SBx7-7 – Water Conservation Act of 2009

•Enacted in 2009

•Mandatory process for suppliers over 25,000acres

•Requires preparation and adoption of AWMP

•Includes new delivery measurement andvolumetric pricing requirements

•Non-compliance results in ineligibility forState water grants and loans

Regulatory Context (SBx7-7)

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OID AWMP Update Briefing

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•Executive Order B-29-15

•Issued by Governor Brown on April 1, 2015

•Requires 2015 AWMP updates to includedetailed “Drought Management Plan”

•Requires description of water supplies anddemands for 2013, 2014, and 2015 to theextent available

Regulatory Context (EO B-29-15)

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AWMP Preparation and Contents

•Prepare Water Balance

•Implement Critical (Mandatory) EWMPs

•Delivery measurement with “sufficient accuracy”

•Volumetric pricing

•Evaluate Additional (Conditional) EWMPs

•Implement if technically feasible and cost-effective

•Prepare Plan

•District description

•Water supply inventory

•Water balance

•Climate change evaluation

•Description of EWMP implementation

•Water Resources Plan (WRP) implementationreview

•Involve the public

1/5/2016

OID AWMP Update Briefing

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Status

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Ongoing

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Ongoing

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OID Water Resources Plan

OID AWMP Update Briefing

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2015 AWMP Update Adoption Process

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•Provide briefing on AWMP update (Jan 5)

•Set hearing date and make draft plan available (by Jan 19)

•Post on Internet

•Notify counties and cities of availability

•Hold public hearing (Feb 2)

•Consider adoption at Board meeting (Feb 2)

•Make final adopted plan available (within 30 days ofadoption)

•Send to Department of Water Resources

•Post on Internet

•Place at local libraries

•Send to other local water agencies

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Water BalanceAnalysis and Results

1/5/2016

OID AWMP Update Briefing

AWMP Results

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What is a Water Balance?

•Complete accounting of all water flowing into andout of the district over a specified period (months oryears)

•Basic accounting principle:Inflow – Outflow ± Change in Storage = 0

•Same as a checking account:Deposits – Withdrawals ± Change in Balance = 0

OID AWMP Update Briefing

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Water Balance Benefits

•Provide insights into water management

•Assess water supply adequacy andconservation opportunities

•Assess water measurement and datamanagement practices and opportunities

•Evaluate exchanges with underlyinggroundwater basin and demonstratesustainable management

OID AWMP Update Briefing

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OID Water Balance

•Separated into 3 accounting centers

•Distribution system (OID canals)

•Farmed lands

•Drainage system (OID drains)

•Monthly Accounting from 2005 to 2014

•2012 to 2014 added as part of update

•“Flow through” winter flows not fully accounted

•Results demonstrate the following:

•Efficient water management

•Net contribution to groundwater system

OID AWMP Update Briefing

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OID Water Balance Structure

OID AWMP Update Briefing

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OID Water Balance Summary

OID AWMP Update Briefing

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Inflows

Outflows

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Groundwater Recharge

OID AWMP Update Briefing

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OID AWMP Update Briefing

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Surface Outflow Destinations

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Surface Outflows by Destination

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OID AWMP Update Briefing

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Efficient WaterManagement PracticeImplementation Status

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OID AWMP Update Briefing

AWMP Results

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Efficient Water Management Practices

•SBx7-7 requires districts to evaluate &implement two types of EWMPs

•2 Critical (Mandatory) EWMPs[§10608.48(b)]

•Delivery Measurement

•Volumetric Pricing

•14 Additional (Conditional) EWMPs[§10608.48(c)]

OID AWMP Update Briefing

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Critical (Mandatory) EWMPs

1.Delivery Measurement

•District-wide inventory and inspection completed

•Compliant turnout standards developed

•Replacement in accordance with WRP

•Focus on turnouts serving largest acreages

•Continued improvements to meet State regulatoryrequirements

2.Volumetric Pricing

•Adopted pricing structure in part on volume in 2014

•Provided mock bills in 2015

•Coordinate with WRP update

OID AWMP Update Briefing

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Additional (Conditional) EWMPEvaluation Process

1/5/2016

Is EWMPalready beingimplemented?

Describe actionsand estimateWUEimprovements

Yes

Whynot?

Providejustification

Not

Technically

Feasible

Prepare NetBenefitAnalysis

Not

Cost

Effective

OID AWMP Update Briefing

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Additional (Conditional) EWMPs

1.Facilitate alternative land use

2.Facilitate use of available recycled water

3.Facilitate financing of on-farm capitalimprovements

4.Implement incentive pricing

5.Line or pipe canals, and constructregulatory reservoirs

6.Increase flexibility in water ordering anddelivery

7.Construct and operate supplier spill andtailwater recovery systems

1/5/2016

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Status

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NotFeasible

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OID AWMP Update Briefing

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Additional (Conditional) EWMPs, cont.

8.Increase planned conjunctive use ofsurface water and groundwater

9.Automate canal control structures

10.Facilitate or promote customer pumptesting and evaluation

11.Designate Water Conservation Coordinator

12.Provide for the availability of watermanagement services to customers

13.Evaluate supplier’s policies

14.Improve supplier’s pumping efficiency

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Status

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OID AWMP Update Briefing

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Water Resources PlanImplementation Status

1/5/2016

OID AWMP Update Briefing

AWMP Results

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Water Resources Plan

•Under Implementation since 2006

•510 capital improvement projects between2006 and 2014 ($46 million)

•175 projects since 2012 ($7.1 million)

•Currently being updated

•Increased focus on turnouts for compliance withnew State regulations

•Less projects since 2012 due to expended bondproceeds and lack of firm long-term watertransfers

OID AWMP Update Briefing

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Capital Improvements by Year(Does not include main canal and tunnel improvements or North Side reservoir)

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Cumulative Capital Improvements(Does not include main canal and tunnel improvements)

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Drought ManagementPlan and ImpactsSummary

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OID AWMP Update Briefing

AWMP Results

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Drought Management Plan

•Required under Executive Order B-29-15

•Expands upon existing OID surface watershortage policy

•Topics addressed:

•Determination of available water supply

•Drought responses (OID water managementactions)

•Drought impacts (supplies and demands)

OID AWMP Update Briefing

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Drought Responses

•Declaration of drought and surface watershortage policies

•Coordination and collaboration

•Supply management

•Demand management

OID AWMP Update Briefing

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Drought Impacts

•Impacts on water supplies

•OID surface water

•OID groundwater

•Impacts on water demands

•Reference evapotranspiration

•Crop evapotranspiration of applied water

OID AWMP Update Briefing

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OID Surface Water Supplies, 2012-2015

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OID Groundwater Supplies, 2012-2015

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Reference Evapotranspiration, 2012-2015

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Crop Evapotranspiration of Applied Water, 2012-2015

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Questions and Discussion