Rosario Sanchez Rosario Sanchez Officially there are 11 - - PowerPoint PPT Presentation

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Rosario Sanchez Rosario Sanchez Officially there are 11 - - PowerPoint PPT Presentation

Aug 21, 2023 15 likes •415 views

Rosario Sanchez Rosario Sanchez Officially there are 11 transboundary aquifers between Officially there are 11 transboundary aquifers between Mexico and the US Current research shows Current research shows there can be 36 12 potential

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Rosario Sanchez Rosario Sanchez

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Officially there are 11 transboundary aquifers between Officially there are 11 transboundary aquifers between Mexico and the US

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Current research shows Current research shows there can be 36

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12 potential aquifers 12 potential aquifers with limited data

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Mexico and Texas: Mexico and Texas: Current research shows…

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33 hydrogeological units 33 hydrogeological units

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21 potential aquifers 21 potential aquifers

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50% of the shareable land has 50% of the shareable land has good aquifer potential

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and good to moderate and good to moderate water quality

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Red areas indicate zones of potential prioritization Red areas indicate zones of potential prioritization

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Another approach Another approach beyond delimitation…

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OBJECTIVES OBJECTIVES

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  • The ETAA approach offers an alternative way to

assess priority areas within the natural boundaries assess priority areas within the natural boundaries

  • f each HGU.
  • A more refined, practical and effective aquifer
  • A more refined, practical and effective aquifer

boundary can be delineated.

  • A more comprehensive and local approach for

governance and management options in a more governance and management options in a more feasible way.

  • Applicable not just at the binational level but also
  • Applicable not just at the binational level but also

at the domestic level.

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TBAs with potential ETAAs

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TBAs with potential ETAAs

Carrizo-Wilcox

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TBAs with potential ETAAs CARRIZO-WILCOX 2000

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TBAs with potential ETAAs

Laredo-Palma Carrizo-Wilcox Laredo-Palma Guayabal

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TBAs with potential ETAAs

Laredo-Palma Carrizo-Wilcox Yegua -Jackson Laredo-Palma Guayabal Yegua -Jackson

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TBAs with potential ETAAs Yegua-Jackson Heads 1997 Yegua-Jackson Heads 1997

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TBAs with potential ETAAs

Laredo-Palma Carrizo-Wilcox Yegua -Jackson Laredo-Palma Guayabal

Lower Catahoula

Yegua -Jackson

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TBAs with potential ETAAs

Laredo-Palma Carrizo-Wilcox Yegua -Jackson Laredo-Palma Guayabal

BRB/Gulf Coast

Lower Catahoula

Yegua -Jackson

BRB/Gulf Coast Aquifer

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Accordingly, Accordingly, priority TBAs:

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BRB/Gulf Coast

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Lower Catahoula

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Yegua-Jackson

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Laredo-Palma Guayabal

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Carrizo-Wilcox

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AND THE AND THE MANAGEMENT?? MANAGEMENT??

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  • 44 interviews (Mexico and
  • 44 interviews (Mexico and

Texas):

Categories

Texas Mexico

Categories

Texas Mexico

State officials

4 2

Federal officials

2 5

City/District officials

4 2

City/District officials Agriculture users

2 2

Academics/Experts

7 5

NGOs

1 1

Private/Industry

4 3

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Maturity Process of Transboundary Groundwater Cooperation Efforts

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Take home ideas ideas

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  • First, stakeholders support a binational groundwater agreement;

however, the majority also suggest that short-term local or regional arrangements may be preferable as local/regional regional arrangements may be preferable as local/regional approaches may be more achievable or realistic

  • Second, participants identified leadership and individual

personalities as key factors for success at the local level, but such personalities as key factors for success at the local level, but such influence had limited sustainability over time and limited regional-systemic effects.

  • Third, water quality, rather than water quantity, is the main

driver of transboundary cooperation efforts in the region. driver of transboundary cooperation efforts in the region.

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So, what is the proposed MODEL?

  • Local

Local-scale scale

  • Non

Non-binding arrangements binding arrangements

  • Non

Non-binding arrangements binding arrangements

  • Focused on water

Focused on water quality/environment quality/environment

  • Leadership

Leadership

  • Leadership

Leadership

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Looking for data? Looking for data? We are too!

Transboundary.tamu. Transboundary.tamu. edu

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