Making the invisible visible

Nègre, Julien

doi:10.12968/gasn.2022.20.10.20

Cited by 1 publication

(1 citation statement)

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“…Groundwater (GW) has become one of the most important sources of water around the world, and transboundary aquifer characterization is important for a sustainable approach to binational groundwater governance [1]. GW is the main water resource in arid and semi-arid zones, representing more than 99% of liquid freshwater availability in the world [2] and approximately 0.75% of all the existing water in the world [3]. However, groundwater is one of the least studied and understood water sources in terms of its nature, formation, movement, quality, recharge, availability, and extension worldwide [4].…”

Section: Introductionmentioning

confidence: 99%

Groundwater Prospecting Using a Multi-Technique Framework in the Lower Casas Grandes Basin, Chihuahua, México

Granados

Rascon-Mendoza

Gómez-Domínguez

et al. 2023

Water

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Groundwater is a strategic resource for economic development, social justice, environmental sustainability, and water governance. The lower Casas Grandes River Basin, located in the state of Chihuahua, México, is in a semi-arid region with increasing groundwater demand and regional challenges such as drought and depletion of aquifers. Even though there is official information about the availability of groundwater, a comprehensive aquifer characterization requiring an interdisciplinary investigation using a diverse suite of tools and multiple data sources has yet to be carried out. This study presents a multi-technique framework to evaluate potential sites to drill for groundwater resources and reduce the risk of unsuccessful drilling. The main components of the methodology include wellhead leveling correction with a differential global positioning survey to define piezometric levels, principal component analysis using LANDSAT-8 images, application of geospatial tools, geophysics analysis using time domain electromagnetic surveys (TDES) and vertical electric soundings (VES), and structural geohydrology to define aquifer characteristics. The results showed that using the proposed framework steps improved the possibility of identifying subsurface layers with lower resistivity values that could be related to groundwater. Low resistivity values (35 Ohm-m) were found at depths from 50 to 85 m at sites where the regional static water level reached a depth of 245 m, indicating the potential location of a shallow groundwater resource at a site where the intersection of a fracture trace was identified. This procedure can be used in other regions in the world where limited information is available for groundwater exploration, thus reducing the risk of drilling dry wells in complex hydrogeological environments.

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Section: Introductionmentioning

confidence: 99%