The Khaung Daing hot spring (Inle lake, Southern Shan State, Myanmar): development opportunities and challenges

Abstract

Located on the north-western border of the Inle lake basin, the Khaung Daing hot spring outflows at ca. 70°C. Temperature at depth, calculated with chemical geothermometers is probably less than 150°C, therefore classifying it as a medium-low enthalpy geothermal resource. Geochemical and isotopic results also demonstrate that the hot spring is fed by local groundwater, equilibrated with the carbonate rocks but without isotopic exchange with the matrix. Trace elements, particularly As (119 µg/L), display high concentrations, raising some concern about potential environmental and health effects.