Identifying recharge areas for the upstream portion aquifers of Awash Basin, Ethiopia

The western and eastern flanks of Ethiopia's Awash and Abay Basins, respectively. Identifying recharge zones of the main aquifers in the Upper Awash Basin, which are water resources targeted for long-term sustainable use. In this work, lithohydrostratigraphic concepts with fracture density, hyd...

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Bibliographic Details
Published in:Journal of hydrology. Regional studies 2024-08, Vol.54, p.101890, Article 101890
Main Authors: Tadesse, Ephrem, Azagegn, Tilahun, Alemayehu, Taye
Format: Article
Language:English
Subjects:
Aquifers
basalt
basins
deuterium
Ethiopia
groundwater
Groundwater chemistry
hydrogeochemistry
Part of the Upper Awash Basin
Recharge area
seepage
Stable isotopes
water supply
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Summary:The western and eastern flanks of Ethiopia's Awash and Abay Basins, respectively. Identifying recharge zones of the main aquifers in the Upper Awash Basin, which are water resources targeted for long-term sustainable use. In this work, lithohydrostratigraphic concepts with fracture density, hydrogeochemical and stable isotopic insights were applied using information from 94 water-supply wells, 188 geoelectrical resistivity, 124 hydrochemistry, and 81 stable isotopic data sets. The results illustrate that recharge of superficial deposits and Rift basalt aquifers is from modern precipitation and from nearby streams/rivers through fractures, which is exemplified by mixed CaHCO3 or CaMgHCO3 water types of low TDS (5), low RA (
ISSN:2214-5818
2214-5818
DOI:10.1016/j.ejrh.2024.101890