Townley, L.R., Turner, J.V., Trefry, M.G., and Barr, A.D. (1991), Groundwater flow patterns near lakes and wetlands: modelling and field validation, International Hydrology and Water Resources Symposium 1991, Perth, October, Volume 3, 732-737.
Shallow lakes and wetlands are frequently an expression of the regional water table. This paper focuses on flow-through lakes which receive groundwater on their upgradient side and discharge lake water to the regional aquifer on their downgradient side. Such a configuration is typical of lakes of the Swan Coastal Plain near Perth, Western Australia. Results are presented which summarise our understanding of two-dimensional flow patterns, both in plan and in vertical section. Preliminary results are presented for three-dimensional flow patterns, along with a methodology for identifying capture zones in a regional system with many lakes and complex variations in topography and land use. Environmental isotopes, in particular deuterium and oxygen-18, and chloride, are shown to be useful in confirming predicted flow patterns. Field results are presented for Nowergup Lake, a flow-through lake on the Swan Coastal Plain.
Copyright © 2005 by Lloyd Townley