Upper Mokelumne River Watershed

Authority

IRCUP Concept Workshop

July 22, 2011

Introduction & Overview Welcome Self Introductions Lunch Options Workshop Purpose & Objectives Workshop Agenda

Workshop Purpose and Objectives Purpose: Acquaint Board members and others with agency water supply needs and potential IRCUP benefits in advance of UMRWA IRCUP Collaborative Decision Making Plan process and possible Moke River Forum ‘Inter-regional’ Planning Grant

Objectives are for Attendees to: •Learn basic water needs of Member Agencies•Be familiar with San Joaquin water resource issues•See potential benefits of IRCUP concept •Recognize environmental and other considerations•Know planned/anticipated IRCUP ‘next steps’

Workshop Agenda

I. IRCUP Basic Concept

II. MAC Member water needs and issues

III. San Joaquin water needs and issues

IV. How IRCUP May Help address needs– IRCUP scope and size options– Environmental and other considerations

V. Ongoing and Next Steps

VI. Conclude Workshop (Board mtg @ 1:00)

IRCUP Basic Concept• Mokelumne River stretches from High Sierra to Delta,

links MAC Region with Eastern San Joaquin (ESJ) Region• ESJ’s depleted Groundwater Basin creates ‘conjunctive

use’ opportunity (i.e. coordinated management of surface and ground water supplies via ‘water bank’)

• Potential benefits:- MAC Region: Increased water supply and reliability- EBMUD: Supplemental supply - drought protection - ESJ Region: Groundwater basin recharge

• IRCUP is ‘inter-regional’ by involving both MAC and ESJ Regions

IRCUP Basic Concept

Two ‘operations’ – wet years & dry years•Wet years

־ MAC members: surface water diversions

־ ESJ Region: ‘in-lieu’ of direct recharge

־ ‘Bank’ excess flows in SJ Groundwater Basin

•Dry years - MAC members: surface water diversions and

banked ‘exchange’ water

- ESJ Region: extracts water stored in GW basin

IRCUP Basic Concept

Amador Water Needs & Issues

AWA Water Needs & Issues

AWA Water Needs & Issues

AWA Water Needs & IssuesCURRENT & PLANNED WATER SUPPLIES (AFA)

Supply Source 2010 2015 2020 2025 2030

Surface Water

(Mokelumne River)

16,150 17,200 17,200 17,200 17,200

Groundwater

(Supplier produced)

296 369 442 511 581

Recycled Water 0 TBD TBD TBD TBD

TOTAL 16,446 17,569 17,642 17,711 17,781

AWA Water Needs & Issues

EXISTING USAGE  AFA

AWS Transmission Pipeline 5,000

Amador Canal / CAWP 3,200 / 1,100

Will Serves & Conditional Will Serves 500

City of Plymouth 400

SUBTOTAL 10,200

LAND USE AGENCIES GENERAL PLANS – DEMAND ESTIMATES  

Cities of Ione / Sutter Creek / Jackson / Plymouth7,400 / 2,200 / 1,300 /

1,800

Martell Reg. Service Center & Nearby Special Planning Areas / CAWP / Camanche 1,800 / 1,000 / 1,200

SUBTOTAL 16,700

OTHER FUTURE WATER DEMAND ESTIMATES  

County Parcels Eligible for Further Subdivision/ Elimination of Amador Canal 3,600 / (-1,900)

Ag Parcels w/in City of Plymouth SOI 2,200

Rancho Arroyo Seco 7,200

SUBTOTAL 11,100

Ag. Water Use Unknown

GRAND TOTAL 38,000

Estimated Water Demands (April 2009)

AWA Water Needs & Issues

Total Water Use (AFY) Draft Updated Urban Water Management Plan

Water Use 2005 2010 2015 2020 2025 2030

Total water deliveries 3,312 3,129 3,590 4,574 5,218 5,879 Sales to other water agencies 1,683 1,377 1,482 1,787 1,941 2,116 Additional water uses and losses 4,738 3,901 3,980 4,137 4,248 4,362

Total 9,733 8,407 9,052 10,498 11,407 12,356

AMADOR WATER AGENCYWater Supply Portfolio Planning

Conservation Projects

•Adopted Conservation Plan•Review and implement other water savings infrastructure projects such as piping open channel conveyance systems & replacement of leaking storage facilities

Reclamation Projects

• SNC Grant Funds to initiate regional wastewater & reclamation• Developer Infrastructure

New Water Supply Projects

•Investigation of the Inter- Regional Conjunctive Use Project (IRCUP) with partnerships & phased facilities•Investigate raising Lower Bear Reservoir either as stand alone project or part of IRCUP•Continue to look for potential projects involving Mokelumne & Cosumnes Rivers

JVID Water Needs & Issues

Annual demands 10,000 -12,000 AFA– Serves 90% ag and 10% domestic– Supplies bottled water to ~60 customers

Supply sources:– Jackson Creek (storage at 22,000 af Lake Amador)– Mokelumne River (3,850 af now, 2,800 af soon)– Working w/EBMUD on Pardee tie-in

Major system improvements in design– Replace 2 WTPs with 1– New transmission lines

Calaveras Water Needs & Issues

CCWD Water Needs & Issues

CCWD Water Needs & Issues

CCWD Water Needs & IssuesNew Hogan/Camanche/Valley Springs Sub-

RegionProjected Water Demands (AFA)

Water use category 2015 2020 2030 2040 2050

Single-family 2,372 2,536 3,029 3,562 4,215Multi family 17 18 22 26 31Commercial 137 147 175 206 244Institutional 59 63 76 89 105Landscape irrigation 169 180 215 253 300Groundwater recharge 1,500 1,500 3,500 5,500 5,500Raw water (agricultural use) 10,822 13,986 20,315 26,643 32,972Raw water (golf course irrig.) 60 60 60 60 60Recycled 245 245 245 245 245Unaccounted-for water 16% 12% 10% 8% 8%

Total: 15,381 18,735 27,637 36,584 43,672

CCWD Water Needs & Issues

Water use category 2015 2020 2030 2040 2050

Single-family 324 360 442 488 520Multi family 2 3 3 4 4Commercial 19 21 26 28 30

Institutional 8 9 11 12 13

Landscape irrigation 23 26 31 35 37Raw water (agricultural use) 0 2,000 2,000 2,000 2,000Recycled 0 0 0 0 0Unaccounted-for water 18% 14% 11% 8% 8%

Total: 376 2,419 2,513 2,567 2,604

West Point/Wilseyville/Blue Mountain Area

Projected Water Demands (AFA)

CCWD Water Needs & Issues

Sub-Region 2015 2020 2030 2040 2050

New Hogan/ Camanche/Valley Springs

15,381 18,735 27,637 36,584 43,672

West Point/ Wilseyville/Blue Mountain

376 2,417 2,513 2,567 2,604

Total 15,757 21,152 30,150 39,151 46,276

Combined Projected Water Demands (AFA)

of Sub-regions Proximate to Mokelumne

CCWD Water Needs & Issues

CCWD Issues and Needs

Calaveras Water Supply Objectives:•Meet existing and future supply needs

•Secure Mokelumne River storage

•Mitigate existing groundwater overdraft

•Resolve protest of San Joaquin County’s water right filing

•Preserve reservation of Senior Priority of Area of Origin water rights

CPUD Issues and Needs

CPUD Issues and Needs

CPUD Projected Future Demands

Year # of services

Avg. Demand

(MGD)

Avg. Annual Demand

(AF)

2010 1,975 1.31 1,468

2015 2,180 1.45 1,624

2020 2,407 1.60 1,792

2025 2,658 1.76 1,972

2030 2,934 1.95 2,185

CPUD Issues and Needs

CPUD Water Supply•Mokelumne River South Fork diversion

•Raw water pumped to Jeff Davis reservoir

•Agreement w/EBMUD provides approx. 9,125 AF per year

•Water Rights Order 16338 limits annual diversions to 6,656 AF

EBMUD Water Needs & Issues

EBMUD Water Needs and IssuesWater Supply Management Program 2040

Current Status:- Revising PEIR to address Court Order

Program Elements (adopted by EBMUD Board in 2009):- Rationing - Conservation- Recycling- Supplemental Supply Options:

a) Water Transfersb) Groundwater Banking / Exchange (various locations)c) Desalinationd) Reservoir Enlargement (various locations)

The IRCUP can be considered a combination of items b&d and was framed in the WSMP 2040 as a Regional Up-Country Project option

EBMUD Water Needs and Issues

Demand (MGD) 2010 2015 2020 2025 2030 2035 2040

Customer Demand 251 266 280 291 304 308 312

Adjusted for Conservation

-26 -32 -43 -49 -56 -59 -62

Adjusted for Recycled Water

-9 -11 -16 -18 -19 -20 -20

Planning Level of Demand

216 223 221 224 229 229 230

EBMUD Demand Projections:•Uses land-use based method to project demands •Consistent with anticipated levels of development in community planning policies

EBMUD’s Demand Projections (2010 UWMP)

Demand recovery trend from 2010 to

2020 based on previous

trends

EBMUD Water Needs and Issues

Court Ruling Identified Deficiencies with Environmental Review of Enlarge Pardee element + suggested consideration of an

Enlarge Los Vaqueros option

Enlarge Pardee Reservoir (up to 37.5 MGD)

Rationing Level: up to 15% (32 MGD)

Conservation Level: D (39 MGD)

Recycling Level: 3 (11 MGD)

EBMUD’s Projected 2040 Water Supply

* 11% Shortfall to be met by Supplemental Supply Option/s

San Joaquin WaterNeeds & Issues

2005 Water Use 2030 Land Use

Figure 1-X

GROUNDWATER BASINSOF SAN JOAQUIN COUNTY

NORTHEASTERN SAN JOAQUIN COUNTY GROUNDWATER BANKING AUTHORITY

Source: California Spatial Information Library at http://www.gis.ca.gov/

CONTRACOSTA

COUNTY

ALAMEDACOUNTY

STANISLAUSCOUNTY

CALAVERAS COUNTY

MODESTOSUB-BASIN

EASTERN SAN JOAQUINSUB-BASIN

TRACYSUB-BASIN

COSUMNESSUB-BASIN

N

10 0 10 Miles

San Joaquin Water Needs & Issues

• 7 Major cities & towns• 9 Water districts &

agencies• Large agricultural

community• Rapid urban growth,

increasing demands• Complex water

management• Lack of adequate surface

water supplies• Heavy reliance on

groundwater

Ground Water Elevations

SJ Water Needs & Issues

Groundwater Management Area – portion of San Joaquin County that overlies the Eastern San Joaquin County, Cosumnes, and Tracy Sub-Basins

San Joaquin Water Needs & Issues

Identified Water Management Strategies:•Reduce Water Demand (conservation/recycling)•Improve Operational Efficiency and Transfers (conveyance, reoperation, transfer)•Increase Water Supply (conjunctive use, desal, surface storage)•Improve Water Quality (water treatment, GW remediation)•Practice Resources Stewardship (ag land, economic incentives, ecosystem mgt, protect recharge areas)•Other Resource Management Strategies (Regional partnerships, imported water, land use planning, flood management)

San Joaquin Water Needs & Issues

Alternative Project Elements:•Max. Demand Side Actions •Maintain water levels at 1986-1992 levels

– 140-160 kaf/yr– fluctuates around 1986 water level

•Utilize multiple sources & recharge areas•Maximize in-lieu supply•Program EIR: 4 equal alternatives to achieve 140-160 kaf/yr

Conjunctive Use Projects

Groundwater BasinAlternative A Alternative B

Alternative C Alternative D

• No Project Alternative– Continued decline

• Beneficial for:– Groundwater levels– Groundwater

recharge– Land Subsidence– Wells– Surface Water– Reduce Salt Intrusion

San Joaquin Water Needs & Issues

San Joaquin ‘Next Steps’: •Significant Regional Consensus•No Single Project will Solve SJC Problem•Maximum Demand Side Actions•Up to 140,000 to 160,000 acre-feet of New Conjunctive Supply on Average Annually•Help Stop Overdraft and Saline Intrusion•Possible Flood Control/Stormwater Components•Inter-Regional Program/Project Participation

How IRCUP May Help Address Inter-regional Needs

Summary: Inter-regional Water NeedsRegional Component

Basis of Need Timing

AmadorMeet future demands of

planned growthYear 2030

Calaveras

Meet future demands in west county and West Point,

provide storage, and mitigate groundwater overdraft

As soon as possible

East Bay MUDSecure supplemental dry

year supply (drought mitigation)

Year 2030 +/-(current assumption based on implementation order)

San JoaquinAddress groundwater

basin overdraft / salt water intrusion

As soon as possible

How IRCUP May Help Meet Needs

Size and Scope Options for IRCUP• Conjunctive use benefits and impacts vary

depending on size/scope of IRCUP, e.g.- Use only existing facilities- Minor/moderate expansion of existing facilities- Build new/additional storage reservoir

• Water supply benefits, costs and impacts correspond to size/scope of IRCUP

• Facilitated stakeholder discussions should yield good understanding of agency needs and stakeholder interests

How IRCUP May Help Meet Needs

Upstream Reservoirs

Camanche Res.

Potential Off Stream Reservoirs

PG&E Tributary Reservoirs

Folsom South Canal

Freeport Pipeline (100 mgd)

Potential New Water Conveyance

Pipelines

Mokelumne

Aqueducts

Service to Ione / Camanche (AWA)

Service to Camanche / Valley Springs Area

(CCWD)

Groundwater Basin

IRCUP (Forum)

Extract Stored Water For use in SJC or

exchange with others

Mokelumne River

Directly to EBMUD (alternative to in lieu)

Groundwater Basin Recharge Facilities

How IRCUP May Help Meet Needs

Environmental & Other Considerations(Considerations listed below are illustrative and represent

an incomplete list) Fish & Wildlife•Fish habitat (downstream and/or upstream of project components)•Fish passage components •Hatchery program expansion / enhancements•Cold water pool expansion / cold water releases•Habitat creation, protection, enhancements

Recreation•Public access features; trail system components•Fishing and rafting venues (put-ins, take-outs)•Facilities to support recreational uses

How IRCUP May Help Meet Needs

Cultural resources / Native American issues• Preservation and documentation of cultural resource features

Historic Resources• Artifact preservation and restoration• Documentation programs / historic preservation assessments

Other Considerations• Water rights (resolve long-standing water rights disputes)• Inter-regional approach and ‘right-sizing’ facilities may reduce

the impacts of agency-specific stand-alone efforts• Capital and ongoing financing• Operations agreements

Ongoing and Next Steps

UMRWA – Planned 2-step process to seek MAC Stakeholder IRCUP consensus •Begin August/Sept - Develop Collaborative Decision Making Plan (Prop 84 Planning Grant) •2011/2012 - Conduct IRCUP ‘facilitated negotiation’ per Decision Making Plan (new grant)

Mokelumne River Forum – Work Plan•Outreach to potential IRCUP stakeholders•Planning Grant proposal for further study

Ongoing and Next StepsUMRWA ‘Collaborative Decision Making Plan’•Perform Conflict Assessment to determine needs and interests of MAC Region stakeholders•Develop, review and select preferred collaborative decision making process option•Develop joint problem statement which addresses stakeholder needs and interests•Prepare Collaborative Decision Making Plan to include facilitation requirements, info needs, ground rules, support resources, and more

Mokelumne Forum IRCUP Work Plan

Outreach Efforts- Interest Groups: Environmental, Agricultural,

Business, etc. communities- Community / Electeds (political officials, recreation

interest, Native Americans)- Alternating Bimonthly Forum Meetings and Subgroup

Teleconferences (next meeting August 2011) Deliverables (by end of 2011)

- Re-worked / revisited IRCUP Terms & ConditionsAttempt to have Board approvals / integrate IRCUP interest groups principles as attachments

- DWR Planning Grant Application to further study of IRCUP concept (Prop 84 / Round 2)

Conclude Workshop

• Thank you……

• UMRWA Board meeting begins at 1:00

• Lunches provided for those who made prior arrangements