Natalie Ballew presented TWDB updates at the May 2020 TAGD virtual business meeting

1. Texas Water
Development Board
Updates
TAGD Business Meeting
May 27, 2020

2. Regional Water Planning
Draft regional water plans under review
Non-municipal demand projections
Irrigation demands use a MAG-limited
methodology

3. Groundwater Availability
Models (GAMs)
Regional tools intended for use on a
regional scale
Proceed with caution if using on a local
scale

4. Contracted Groundwater
Availability Models (GAMs)
Northern Carrizo-Wilcox, Queen City,
and Sparta Aquifers – December 2020
Southern Carrizo-Wilcox, Queen City,
and Sparta aquifers – June 2021
Cross Timbers Aquifer – conceptual
model, March 2021
GSI Environmental
Daniel B. Stephens & Associates
GSI Environmental

5. In-House GAMs
Blossom Aquifer – March 2020
Gulf Coast Aquifer – February 2021
Northern Edwards (BFZ) and Trinity
aquifers – March 2021
Edwards-Trinity (Plateau), Trinity, and
Pecos Valley aquifers – 2023
Trinity (Hill Country) Aquifer – 2023

6. Future GAM Projects
Marathon Aquifer Conceptual Model
Pumping Research
Recharge and Groundwater-Surface
Water Interaction Research

7. Delayed water quality and spring
sampling and recorder well maintenance
Anticipate to resume field work in June
Field work: sampling and
recorder wells

8. First round of sampling includes
Gorman Spring in San Saba County
Park and Pleasant Valley Springs in Hays
County
Working on contacting landowners and
other entities for additional springs
Spring Sampling Program

9. Statewide suitability study
Underway with HDR Engineering
Aquifer Storage & Recovery
and Aquifer Recharge

10. Upper Coastal Plains Central Aquifers
under review
Trinity (Hill County) Aquifer in progress
BRACS Studies
www.twdb.texas.gov/innovativewater/bracs/index.asp
BRACS = Brackish Aquifer Characterization System

11. Edwards-Trinity (Plateau) Aquifer
Upper Coastal Plains East aquifers
(Carrizo-Wilcox, Queen City, Sparta,
and Yegua-Jackson aquifers)
Future BRACS studies

12. Kayla Shearhart joining Groundwater
team.
Two new GAM modelers
Recorder program specialist
John Meyer retired in April 2020
New Staff

13. Natalie Ballew
Groundwater Technical Assistance
natalie.ballew@twdb.texas.gov
512-463-2779