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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Estimating groundwater recharge in the humid and semi-arid African regions: review.
TL;DR: In this article, the authors reviewed existing studies on groundwater recharge, especially in the semi-arid and humid regions of Africa, and suggested methods for dealing with this limitation and also the future outlook using recently developed technologies such as Remote Sensing (RS) and Geographical Information System (GIS).
Journal ArticleDOI
Analysis of Stable Isotope Contents of Surface and Underground Water in Two Main Geological Formations in the Northern Region of Ghana
TL;DR: Stable isotope (18O and 2H) contents of groundwater and some surface waters from the Northern Region of Ghana were studied in this article, where the authors obtained the transmissivity values using the screen length and hydraulic conductivity.
Journal ArticleDOI
Understanding sub-surface solute distributions and salinization mechanisms in a tropical coastal floodplain groundwater system
TL;DR: The Burdekin coastal floodplain aquifer is a tropical groundwater system exploited for irrigated agriculture that has exhibited increases in groundwater salinity since regular monitoring was introduced in the 1960s as discussed by the authors.
A quantitative estimation of groundwater recharge in part of the sokoto basin, nigeria
TL;DR: In this article, three basic methods have been quantitatively and comparatively applied to estimate recharge into the groundwater system in the Sokoto Basin: empirical (using three simplified equations), hydrochemical (chloride mass balance) and climatic-hydrological methods.
Journal ArticleDOI
Characteristics of Point Recharge in Karst Aquifers
TL;DR: In this article, the hydrologic characteristics of point recharge and their influence on recharge estimation for four groundwater basins are described and the authors suggest that modification to the conventional chloride mass balance (CMB) method may be required to include both point and diffuse recharge components.
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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