Catchment-scale groundwater-flow and recharge paradox revealed from base flow analysis during the Australian Millennium Drought (Mt Lofty Ranges, South Australia)

• Published in: Hydrogeology journal Vol. 29; no. 3; pp. 963 - 983
• Main Authors: Anderson, Thomas T., Bestland, Erick A., Wallis, Ilka, Kretschmer, Peter J. C., Soloninka, Lesja, Banks, Edward W., Werner, Adrian D., Cendón, Dioni I., Pichler, Markus M., Guan, Huade
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2021; Springer Nature B.V
• Subjects: Aquatic Pollution; Base flow; Bedrock; Catchment area; Catchment scale; Catchments; Chlorides; Drains; Drought; Dry season; Earth and Environmental Science; Earth Sciences; Geology; Geophysics/Geodesy; Groundwater; Groundwater flow; Groundwater recharge; Hydrochemicals; Hydrogeology; Hydrology/Water Resources; Mass balance; Mediterranean climate; Moisture content; Paradoxes; Regolith; Resource management; Rivers; Runoff; Salinity; Salinity effects; Sandstone; Seasons; Sedimentary rocks; Shale; Shales; Silica; Silicon dioxide; Soil water; Spatial distribution; Stream discharge; Stream flow; Strontium 87; Strontium isotopes; Waste Water Technology; Water balance; Water Management; Water Pollution Control; Water Quality/Water Pollution; Water resources; Water resources management; Australia; South Australia Australia; Groundwater recharge/water budget; Hydrochemistry; Australia; Groundwater/surface; Water relations

Catchment-scale recharge and water balance estimates are commonly made for the purposes of water resource management. Few catchments have had these estimates ground-truthed. One confounding aspect is that runoff and soil-water inputs commonly occur throughout the year; however, in climates with stro...