lcra lane city reservoir project, karen bondy
TRANSCRIPT
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?