lcra lane city reservoir project, karen bondy
TRANSCRIPT
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LANE CITY WATER SUPPLY PROJECT
Karen Bondy, P.E.LCRA Senior Vice President of Water Resources
March 2, 2017
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Colorado River
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REGIONAL WATER NEEDS
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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
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LCRA’S WORK TO EXPAND THE WATER SUPPLY
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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
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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
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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
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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
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Reservoir Progress
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11/29/2016
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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
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Relift Pump Station
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Inlet to Relift Pump Station
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River Pumps, Return and Canal
Horizontal Pumps
Vertical Pumps
Main Canal
River Return
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River Activities
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HorizontalPump Station Vertical
Pump Station
River Outfall
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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
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Questions?