LCRA Lane City Reservoir Project, Karen Bondy

LANE CITY WATER SUPPLY PROJECT

Karen Bondy, P.E.LCRA Senior Vice President of Water Resources

March 2, 2017

Colorado River

REGIONAL WATER NEEDS

Region K Water Planning

• 2020-2070: Water demands increase 24 percent– From 1.2 million to 1.5 million acre-feet per

year

• In 2070: Potential water shortfall of 512,000 acre-feet

LCRA’S WORK TO EXPAND THE WATER SUPPLY

Expanding Water Supplies

• Using groundwater in Bastrop County– Drilled wells at Lost Pines Power Park– Purchased groundwater rights at Boy Scout

ranch• Completing design, permitting and land

acquisition for additional water projects• Building a new downstream reservoir

– Lane City Reservoir

Lane City Reservoir• Located in Gulf Coast Irrigation Division • Off-channel reservoir/ring dike • Existing river pump station and canals• Storage volume about 40,000 a-f• Annual firm yield acre-feet/yr 90,000• Cost is $250 million

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Why Build the Lane CityReservoir Downstream?

• Take advantage of a wetter climate in lower basin

• Capture and store runoff from rain falling downstream of Lake Travis

• Increase system efficiency

• Water demand

Major Permitting Efforts• Water right amendment• USACE Sections 404/10 permitting• Engineering design permits

Floodplain permittingDam safety permitting

• TPWD sand, gravel and marl permitting• TPDES construction storm water

discharge permit

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Lane City Reservoir Project Components

Lane City Reservoir

Lane City Reservoir Overlaid on Austin Map

0 0.5mile

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Reservoir Drains and Cut-off Wall

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Technical Review Board

• Includes leading engineering experts– Dr. Michael Duncan

and Dr. Stephen Wright

– Highly respected by TCEQ

Engineering textbook

Reservoir Progress

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11/29/2016

Embankment and Lime Stabilized Fill

CONFIDENTIAL - REFLECTS INTERNAL POLICY DEVELOPMENT AND/OR LEGAL ADVICE 15

11/29/2016

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Relift Pump Station Components

Canal

Reservoir

Relift PumpsStand-Pipe & Control Room

Inlet/Outlet

Relift Pump Station

Inlet to Relift Pump Station

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River Pumps, Return and Canal

Horizontal Pumps

Vertical Pumps

Main Canal

River Return

River Activities

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HorizontalPump Station Vertical

Pump Station

River Outfall

Fish and Mussel Relocation

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EFFORTS TO IMPROVE WATER MANAGEMENT

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Prairie Conservation Reservoir

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Prairie Conservation Reservoir

• $8 million grant from NRCS – for 2,000 acre-foot reservoir

• Will provide water for use in the Lakeside Irrigation Division

• Will enhance operational efficiencies– Potential to save up to 20,000 acre-feet of

irrigation water ordered from the Highland Lakes in a typical year

Questions?