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2013 | OriginalPaper | Buchkapitel

3. Very Shallow and Shallow Groundwaters

verfasst von : Seifu Kebede

Erschienen in: Groundwater in Ethiopia

Verlag: Springer Berlin Heidelberg

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Abstract

Alluvial terrain covers less than 25 % of the land surface of the country (Fig. 3.1) however, major prolific aquifers and larger groundwater storage lay in this zone (Fig. 1.1). Investment on groundwater schemes is, could therefore, much more feasible in the regions underlain by alluvial aquifers.

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Vorheriges Kapitel Groundwater Occurrence in Regions and Basins

Nächstes Kapitel Geochemistry and Water Quality

The Musley fan has been studied in detail because of the groundwater flooding problem faced by Potalsh mining company while trying to excavate shafts into the potash bearing horizons which is found east of the alluvial fan deposits. The groundwater storage, flow, recharge and quality has been studied using sesmic geophysics, test well drilling, pumping test, and water quality measurements. Early in 1960 six wells has been sunk in the alluvial fan out of which four returned good quality water with TDS less than 2000 mg/L while two of them show TDS in excess of 20 g/l. One of the wells has been used for water sourcing the earlier mining camp.

In this particular case alluvial fans refers to those alluvial deposits with fan shaped morphology and occurring in solitary or collapsed forms occupying desert environments in Ethiopia. Other alluvial deposits such as intermountain alluvial valleys, flood plain related alluvial deposits (fluvial deposits) or any other form of alluvio lacustrine sediments such as valley fill alluvial sediments are not included.

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Titel: Very Shallow and Shallow Groundwaters
verfasst von: Seifu Kebede
Verlag: Springer Berlin Heidelberg
Buch: Groundwater in Ethiopia
Print ISBN: 978-3-642-30390-6

Electronic ISBN: 978-3-642-30391-3

Copyright-Jahr: 2013
DOI: https://doi.org/10.1007/978-3-642-30391-3_3