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How the Drought Has Affected Business presented by Scott Hall, Lower Neches Valley Authority at the TWCA annual conference http://www.twca.org
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LOWER NECHES VALLEY AUTHORITY
MUNICIPAL • INDUSTRIAL • AGRICULTURAL WATER
Created by the State Legislature in 1933 as a Conservation and Reclamation DistrictJurisdictional Area
Tyler, Hardin, Jefferson and portions of Liberty and Chambers Counties
Services Provided Water Supply from Neches & Trinity Rivers Wastewater Treatment for industry Potable Water to Bolivar Peninsula Environmental Water Quality Testing
Partnership with USACE Sam Rayburn Reservoir Lake B.A. Steinhagen Neches River Saltwater Barrier
Our neighborhood
Population of 250,000
Irrigation of 27,000 acres of rice, emerging biofuels
Refining and Petro-chemical Industries 11% of Nation’s refined petroleum products Delivers 400,000 BCD of waterborne crude Delivers 470,000 barrels per day of refined products Industry Drives the Economy of the Area:
Total expenditures exceed $35 billion per year
Gross product of $8.8 billion annually
Employs over 88,000 people
4th largest Port complex in the Nation
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Village Creek near Kountze, TXDrainage Area 860 square miles or 8.8% of the Neches River Basin
Gage Record Established June 1, 1924
Historical Minimum Flow 2011 Observed Flow
Historic Low Flow16 cfs - October 1-2, 1957
New Record Low Flow10 cfs – October 24, 2011
Sam Rayburn Reservoir
Reservoir Pool Total Storage Acre-feet
Flood Control 3,997,600
Conservation 2,898,500
Inactive Pool 1,452,000
At Elevation 150.79 feet on 11/17/11
Total Storage 1,584,800 acre-feet
Conservation Storage
132,800 acre-feet
9% of capacity
Inactive Pool
Elev. 173
Elev. 164.4
Elev. 149
Elev. 105
Conservation Pool for Water Supply and Hydroelectric Power Generation
Original DCP in response to 1996 drought
Untested in Severe Drought 30% reduction then no storage
Revised DCP Triggers at 1year, 6 months and 3 months Surcharge that increase as drought increases Trigger to curtail interruptible supply
Drought Contingency Plan
Conservation Efforts
Saltwater Barrier operated in a salinity control mode since Oct 2010
Coordinated Reservoir Releases with USACE
Required customers schedule water delivery
Municipal efforts – 20% reduction by replacing leaking distribution system pipes
Industrial customers actively engaged
All irrigation is metered – 27% reduction
Alternate Water Supply
Extension of active pool at Rayburn Requires extension of erosion protection and
modification to the hydropower plant
Request to Sabine River Authority for an additional supply from Toledo Bend SRA Board to consider later this month Requires IBT permit Goal to complete within 3 years
Summary
Two years of drought – call to action
Increased conservation efforts
Increased communication with stakeholders
Modification to existing projects/operations
Identified means to diversify water supply
Provide for the present and long term freshwater needs of municipal, agricultural and industrial customers,
Protect water quality in the Neches River and coastal basin,
Insure affordability of the water supply,
Enhance the economic
development in the Authority’s
jurisdiction.LNVA
Water for Today
Water for Tomorrow
www.lnva.org