Groundwater development in Lemoa, Guatemala |
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| Authors: | Erin Lepper Andrew Curtis Elmore |
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| Institution: | (1) Geological Engineering, University of Missouri, 125 McNutt Hall, 1870 Miner Circle, Rolla, MO 65409, USA |
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| Abstract: | In the rural Guatemalan Central Highlands, drinking water wells are a rare commodity due to lack of data regarding depth and sustainability of groundwater. At a study well in Lemoa, aquifer sustainability and other characteristics were estimated using hydrograph data and Theis s recovery method for pumping tests. These tests showed that while specific capacity remained fairly constant, transmissivity increased, indicating development of the well subsequent to installation of the study well. The time domain electromagnetic (TDEM) method was evaluated at the site as a prospective groundwater prospecting technique. Characterization of subsurface conditions using TDEM is feasible with local subsurface data for correlation; however, it is limited to delineating low electrical resistive zones without geologic data for correlation. Data showed that groundwater produced from volcanic alluvium at approximately 79 m in depth is sustainable at the study area at current use rates. |
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| Keywords: | Geophysics Groundwater Guatemala Time domain electromagnetics |
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