KarstBase a bibliography database in karst and cave science.
Featured articles from Cave & Karst Science Journals
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PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Journal of Hydrology, 1997, Vol 196, Issue 0, p. 47-65
A parsimonious model for simulating flow in a karst aquifer
Barrett Me, Charbeneau Rj,
Abstract:
This paper describes the hydrologic system associated with the Barton Springs portion of the Edwards aquifer and presents a lumped parameter model capable of reproducing general historical trends for measured water levels and spring discharge. Recharge to the aquifer was calculated based on flow loss studies of the creeks crossing the recharge zone and on estimates of the rate of diffuse infiltration of rainfall. Flow measurements on each creek above and below the recharge zone were used to develop a relationship between how above the recharge zone and the rate of recharge. The five-cell groundwater model, each cell corresponding to one of the watersheds of the five main creeks crossing the recharge zone, was developed to support the management objectives of the City of Austin. The model differs from previous models in that the aquifer properties within cells are allowed to vary vertically. Each cell was treated as a tank with an apparent area and the water level of a single well in each cell was used to characterize the conditions in that cell. The simple representation of the hydrologic system produced results comparable to traditional groundwater models with fewer data requirements and calibration parameters. (C) 1997 Elsevier Science B.V
This paper describes the hydrologic system associated with the Barton Springs portion of the Edwards aquifer and presents a lumped parameter model capable of reproducing general historical trends for measured water levels and spring discharge. Recharge to the aquifer was calculated based on flow loss studies of the creeks crossing the recharge zone and on estimates of the rate of diffuse infiltration of rainfall. Flow measurements on each creek above and below the recharge zone were used to develop a relationship between how above the recharge zone and the rate of recharge. The five-cell groundwater model, each cell corresponding to one of the watersheds of the five main creeks crossing the recharge zone, was developed to support the management objectives of the City of Austin. The model differs from previous models in that the aquifer properties within cells are allowed to vary vertically. Each cell was treated as a tank with an apparent area and the water level of a single well in each cell was used to characterize the conditions in that cell. The simple representation of the hydrologic system produced results comparable to traditional groundwater models with fewer data requirements and calibration parameters. (C) 1997 Elsevier Science B.V
Keywords: aquifer, area, barton springs, c, calibration, cells, discharge, edwards aquifer, flow, groundwater, groundwater model, infiltration, karst, karst aquifer, level, lumped parameter, lumped parameter model, management, model, models, parameters, rainfall, recharge, representation, requirements, science, spring, spring discharge, springs, support, system, texas, time, times, trends, water, water level, water levels, water resources, watershed, zone,