Underground Construction Technology International...
22
J. Tom Ray, PE, D.WRE Water Resources Program Manager Lockwood, Andrews & Newnam, Inc Underground Construction Technology International Conference
Transcript of Underground Construction Technology International...
J. Tom Ray, PE, D.WREWater Resources Program Manager
Lockwood, Andrews & Newnam, Inc
Underground Construction Technology International Conference
Presentation outline Boondoggles or Real Business
the Overview of Texas Water Transfers
Texas Water Supply
Needs, Supply, and How Transfers Fit-in
Inter-State vs. Interbasin/Intrabasin
Current situation and future expectations
Examples – Diversity of Transfer Strategies
CRMWA, D/FW, and Far West Texas
Water Transfers – The Basic Driver
History Texas Water Development
1950Drought
1950 - 1970Dam Construction
1980 – presentNo Major Dam Construction
1950 1960 1970 1980 1990 2000 2010
1985 – presentConservation
1997 – presentSB1 Tx Wtr Plan
What goes around in Texas water comes around again—sometimes more severely
“From an engineering standpoint, this water import program – believed to be the largest water resources development program ever conceived in the mind of men and carried through the planning stages – is, I am told, quite feasible.”
Burleigh’s Ditch
The Texas Water Plan will be a flexible guide for the development and management ofour water resources – and if we are fortunate – an imported supply of surplus water fromthe lower Mississippi River to meet our needs and some of the requirements of Eastern NewMexico into the next Century. Lewis B. Seward, Asst Chief Engineer, TWDB
Plans call for moving water from areas of surplus to areas of scarcity, and from low-
to high- valued uses. Increased conservation will also occur so that the rights to such
"saved" water may be sold on the open market. These ideas constitute a major
departure from the way most Texans are accustomed to dealing
with water.
by Jean A. BowmanTexas Water Resources Institute1993
“Reallocation Era”
• Trend of reallocation from Ag use to M&I •Water short areas need water imports from water-rich East Texas• East Texans concerned with losing supply• Consideration of ‘water banks’ to reserve supplies• IMPORTANT – need for major water transfers
o Additional Interbasin transfers o Limited consideration of Inter-State transfers
Reallocation of Ag to M&I
0
2
4
6
8
10
12
14
2000 2010 2020 2030 2040 2050 2060
Ax
is T
itle Irrigation
Municipal
Manufacturing
Texas
Texas Projected Water Demand by Category, 2000-2060
Millions of Ac-Ft
SB1 and New Era in Texas Water Planning
• Passed in 1997• Comprehensive, “grass-roots” planning• Accomplished by Regions (16)• Junior water rights provision• GW gains primary role (transfers)• Five year planning cycles undertaken• Conservation given strong emphasis• WAMs and GAMs provide answers and more questions• Water Strategies identified for every major water need
Population will double to 40 million by 2050Water Use about 17 MAF todayWater Use will be 21 MAF in 2050Water Supplies
Surface Water about 15 MAFGroundwater about 6 MAF
Water Supply Strategies
Municipal and agricultural irrigation conservationBuild 14 more reservoirsTransfer water from East to Central TexasReuse of treated effluentMore wells
Agricultural Irrigation use will declineAgriculture to Urban water transfers
(thanks to Dr. Kaiser)
2007 Water Plan
4 500 water strategies at estimated $30.7 Billion (2006 dollars)
Options for Surface Water LOW: New State Appropriation 6,500 permits
90% by 200 permit holders
LOW: Redistribution of Water Supply Contracts
MODERATE: System Operations (basinwide) permits
MODERATE: Lease/Purchase from Others
HIGH: Water Transfers/Marketing
Intrabasin Transfers—many
Interbasin Transfers—about 100
Existing and planned
What happens next – intrastate transfers
“Water transfer and marketing is not limited to Houston, Dallas
or San Antonio; the practice is occurring in the Texas
Panhandle, Far West Texas, the Lower Rio Grande Valley and
the Hill Country. Amarillo, Lubbock and nine other Panhandle
cities have drilled water wells in rural areas and are piping this
water to their city customers. There are proposals to pump
groundwater from ranches and farms in West Texas to El
Paso, and the General Land Office is also considering leasing groundwater under state lands.”
Proposed Intra-State Water Transfers
Integrated Water Line – TRWD/DWU
Oklahoma
New Mexico
Oklahoma Water for Texas??“Oklahoma…is literally the
Kuwait of water.”Jim Oliver, Tarrant Regional Water District
More New Mexico Water?
Little chance of any future water coming from northern New Mexico to Texas because of politics.
From conversation with Kent Satterwhite, General Manager, CRMWA
Far West Texas Plans
WaterTransfers
Take-Away Message for UCT Water transfers are and will continue to be a major
part of Texas water picture
More than 100 existing interbasin transfer
More than 40 planned for the future
Most will be within Texas – maybe more in OK
Pipelines /pumps are most significant cost
Existing water transfer pipelines are aging
Expertise in design and construction needed
Better pipe materials lower O&M and increase life
