Journal ArticleDOI
The use of environmental chloride and tritium to estimate total recharge to an unconfined aquifer
GB Allison,MW Hughes +1 more
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In this article, a portion of the Gambier plain underlain by an unconfined aquifer with readily definable hydrologic boundaries has been divided into a number of areas within which soil types have similar hydrological properties, and mean annual recharge has been estimated for each area using both the tritium concentration and the chloride concentration of water within the soil profile.Abstract:
A portion of the Gambier Plain underlain by an unconfined aquifer with readily definable hydrologic boundaries has been divided into a number of areas within which soil types have similar hydrologic properties. Mean annual recharge has been estimated for each area using both the tritium concentration and the chloride concentration of water within the soil profile. Good agreement was obtained between the two methods with local recharge varying between 50 and 250 mm year-1. Total mean annual recharge for the area has been estimated to be 2.4 ± 0.3 x 108 m3 year-1, and this compares favourably with an estimated discharge of 2.5 ± 0.3 x 108 m3 year-1.read more
Citations
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Journal ArticleDOI
Determination of groundwater recharge mechanism in the deep loessial unsaturated zone by environmental tracers.
TL;DR: The tracer technique is found to be applicable and effective this region with thick unsaturated zone of China's Loess Plateau and has important implication to groundwater management and recharge modeling for regions covered by thick loess.
Journal ArticleDOI
Estimate of recharge from radiocarbon dating of groundwater and numerical flow and transport modeling
TL;DR: In this paper, the authors combine radiocarbon age and hydraulic data to estimate recharge to a regional groundwater aquifer using a linked numerical 14C transport and flow model while hydraulic conductivity values are proportionally adjusted to match observed heads.
Journal ArticleDOI
Fractured bedrock and saprolite hydrogeologic controls on groundwater/surface-water interaction: a conceptual model (Australia)
Eddie W. Banks,Craig T. Simmons,Andrew J. Love,Roger H. Cranswick,Adrian D. Werner,Erick A. Bestland,Martin Wood,Tania Wilson +7 more
TL;DR: A hydraulic, hydrochemical, and tracer-based study was conducted at Scott Creek, Mount Lofty Ranges, South Australia, to explore the importance of both the deeper fractured bedrock aquifer system and the shallow saprolite layer on groundwater/surface-water interaction.
Journal ArticleDOI
Estimating impacts of changed land use on recharge: review of modelling and other approaches appropriate for management of dryland salinity
TL;DR: In this article, the authors used Agronomic water-balance studies, where appropriate soil-water measurements exist, may be used with a soil-vegetation model to estimate long-term deep drainage.
Journal ArticleDOI
Factors affecting groundwater recharge following clearing in the south western Murray Basin
TL;DR: In this article, a simple water balance model was used to study the importance of factors which affect diffuse recharge in the south western Murray Basin in Australia, and the results showed that as the texture of the soil became heavier the recharge decreased.
References
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Journal ArticleDOI
Photometric determination of chlorides in water.
Journal ArticleDOI
Chloride concentration in groundwater, recharge rate and rate of deposition of chloride in the Israel Coastal Plain
Erik Eriksson,Vachi Khunakasem +1 more
TL;DR: In this article, a study of the possibility of using chloride concentrations in groundwater for estimating recharge rates is described, the application being demonstrated on available data from the Coastal Plain Aquifer in Israel.
Journal ArticleDOI
Chloride balance of some farmed and forested catchments in southwestern Australia
A. J. Peck,D. H. Hurle +1 more
TL;DR: In this paper, the authors estimate that removal of forest vegetation from forested catchments has increased groundwater discharge of whole catchments by amounts ranging from about 1 to 13 cm3/cm2yr, and the characteristic times for equilibrium of chloride input and loss on farmed catchments are estimated to range from 30 to 400 years.
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Chloride concentration in groundwater, recharge rate and rate of deposition of chloride in the Israel Coastal Plain
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