The document discusses water resource management strategies for the City of Corpus Christi. It provides an overview of the current water supply system, which serves nearly 500,000 residents across 18 communities. It also outlines water management strategies recommended in the 2011 regional water planning process, including expanding existing reservoirs and promoting water conservation. Finally, it discusses plans to conduct a variable salinity desalination pilot project to develop an alternative, drought-resistant water source and determine the feasibility of a full-scale desalination facility.
1. City of Corpus Christi
Water Resource Management
April 8, 2014
2. Overview
• Corpus Christi Regional Water System Overview
• Water Management Strategies
• Future Water Supply-Demand
2
3. Current Water Supply System
• Corpus Christi provides water to 18 cities and
communities in the Coastal Bend
• Customers include nearly 500,000 residents, as
well as diverse businesses and industries
• In FY, 2013 annual consumption of region was
39,907,000,000 gallons (122,469 acre-feet)
3
4. 4
Corpus Christi Regional Water Supply System
Corpus Christi
Choke Canyon Reservoir
Lake Texana
Lake Corpus Christi
San Antonio
Capacity of Reservoirs
In Nueces Basin: 952,531 ac-ft
Lake Texana: 161,085 ac-ft
How much can we use?
In Nueces Basin (consumptive rights):
443,898 ac-ft / year
Lake Texana (contract): 41,840 ac-ft / year
6. Safe Yield 206,000 Ac-ft
Average Annual Demand 120,000 Ac-ft
Surplus 86,000 Ac-ft
Garwood rights Add- 35,000 Ac-ft
6
Water Supplies in
the System
7. Communities Relying
On Regional Surface
Water System
ALICE
BEEVILLE
THREE
RIVERS
PORTLAND
KINGSVILLE
PORT
ARANSAS
FULTON
ROCKPORT
INGLESIDE
CORPUS
CHRISTI
ARANSAS
PASS
BISHOP
DRISCOLL
ROBSTOWN
MATHIS
8.
9. Regional Water Planning
• Regional water planning
process mandated by state
in 1997
• 16 regions
• Coastal Bend is Region “N”
• Has 11 Counties
• Involves multiple
stakeholders
9
10. Recommended Water Management Strategies
(WMS) in the 2011 Region N Plan
• Mary Rhodes Ph II -Construction to start April
2014
• Water Conservation
• Reclaimed Wastewater Supplies
• Variable Salinity Desalinization
10
11.
12. Potential Industrial Demands
12
County Industry Maximum Usage
(ac-ft/year)
First Year of Delivery
San Patricio Tianjin Pipe 2,200 2014
San Patricio Cheniere Gas 3,900 2017
San Patricio Hot Iron Steel 3,900 2016
San Patricio Occidental Fractionator 1,100 2015
San Patricio Occidental Ethylene 3,900 2016
San Patricio Ingleside X 6,700 2017
San Patricio Ingleside Y 2,200 2016
San Patricio Occidental Port 1,700 2016
Nueces LyondellBasell – Project X 900 2014
Nueces LyondellBasell – Plant Expansion 2,200 2016
Nueces M&G Industries – PET Plant 8,200
Total 36,900
13. Project Goals and Objectives
• Feasibility and cost estimate for desalination in region
• Testing of emerging technologies
• Determine basis for design of full scale facility
• Be prepared to start full scale facility
13
Variable Salinity Desalination Project
14. Overview of Variable Salinity
Demonstration Project
•Goals of Project:
• Develop a drought resistant “alternative” water supply
capable of providing continuous source water to the
City’s water supply and distribution system
• Determine the basis for design of a full-scale facility,
operating parameters, costing information and product
water quality to assess the feasibility of a seawater
and/or brackish groundwater supply, including ASR
14
15. Benefits of Desalination/Pilot Project
• Initiate pilot study to continue desalination initiative, including:
• Determine the “Design Criteria” by which we could go to a
full scale plant if this drought continues.
• Determine the rate impact of a full scale plant
• Take advantage of any state or federal grants and loans
• Seawater sources would be closer than existing remote water
supplies
• Reliability of water supply
• Economic development opportunities
• Pilot studies would provide a focal point for public attention
and education
16. Overview of Pilot Project
• Project phases
• Phase 1 Conceptual Plan
Define potential areas for pilot facilities, considering
environmental and technical constraints
• Phase 2 Site Selection/Scoping of Pilot Study
Driven by environmental, land use, technical and
financial considerations, all of which will have an
impact on the scope and budget of the eventual Phase
3 Project
• Phase 3 Demonstration Project
At selected site, water production tests to be
conducted in accordance with TCEQ membrane
protocol
17. Next Steps
• Finalize grant award and details
• Application for Emerging Technology funds from state
completed
• Seek City Council Approval April 2014
for Phase 2 Site Selection/Scoping of Pilot
• Final Phase 3 –Demonstration Pilot to produce an
industrial water
• Anticipated time to complete is November 2017
17
18. Desalination - Program Schedule
18
Current Contract Estimate: 180 Calendar Days 6 Months
Projected Schedule reflects City Council award in May 2014 with
anticipated completion in October 2014.
2014 2015
Q1 Q3 Q4
Next Steps
Equipment Acquisition and Installation
Operating Desalination Demonstration Plant, Technology Testing, and Data Collection
2016
Q4Q3Q2 Q1 Q2 Q3 Q4 Q1 Q2
TM #1 TM #2 TMs #3 & #4
Current Contract Amendment No.1
2014
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant Siting and VSD Protocol
Development
19. • Completed work: $101,932
• Site selection and pilot protocol (item going to
City Council on April 22): $1,032,085
• Pilot installation and testing: $1,772,700
• Funding to come from USBR grant and water
supply development fund
19
Program Budget
Variable Salinity Desalination Project
21. Variable Salinity Demonstration
Phase 2 Funding
• US Bureau of Reclamation
• $400,000
•City of Corpus Christi
• $ 1.2M
•Total Study Cost $1.6 Million
plus in-kind services
•Securing additional funding through
state
21
Why NowFunding is available to get the Coastal Bend ready to move forward with brackish and seawater desalination.One outcome will be a better understanding of the costs of a full-scale operation.Potential to leverage local investments to get state and federal funding of a demonstration plant.Process industries need the reliability of drought proof water supplies.By acting now the Region will be poised to move forward with a full-scale desalination option when the water is needed.
