Broome Sandstone aquifer, La Grange groundwater area: a preliminary report on the hydrochemistry and groundwater recharge rates, with recommendations for future drilling and environmental tracer sampling
Innovative Groundwater Solutions
Innovative Groundwater Solutions has been engaged by the Department of Agriculture and Food, Western Australia (DAFWA) to assist with the initial planning and design of the drilling and groundwater sampling program for the Broome Sandstone aquifer in the La Grange groundwater area.
There are multiple objectives of the drilling program, including defining aquifer stratigraphy and position of the salt-water interface; assessing groundwater recharge, residence time, lateral flow velocity and the source of water to culturally significant sites; enabling long-term monitoring of water level and water quality; and, ultimately, developing a groundwater model for the aquifer.
The following four tasks were considered important preparatory steps for the drilling program, the results of which are detailed in this report: review DAFWA’s preliminary interpretation of groundwater chemistry data collected from existing bores in 2013 derive preliminary estimates of recharge rate for shallow groundwater using the steady-state chloride mass balance method with best available data. work with DAFWA to determine suitable locations and completion details for new bores along 4-6 potential transects. recommend a suite of chemical and isotopic analytes for each of the proposed new bores, and the existing bores for which completion details are known along each transect.
Number of Pages
Broome Sandstone aquifer, La Grange area, hydrochemistry, groundwater recharge, irrigated agriculture
Harrington, GA 2014, Broome Sandstone aquifer, La Grange groundwater area: a preliminary report on the hydrochemistry and groundwater recharge rates, with recommendations for future drilling and environmental tracer sampling, report to Department of Agriculture and Food, Western Australia, Innovative Groundwater Solutions Pty Ltd, Blackwood.
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