Publication Date
11-2016
Series Number
397
Abstract
This report identifies wetlands that are likely to be dependent on the Broome Sandstone aquifer within the La Grange groundwater allocation area. The Broome Sandstone aquifer is the dominant groundwater resource in the area. With potential agricultural growth of this area, it is necessary to understand, monitor and manage the aquifer and its dependent wetlands. This report describes how we created a watertable surface that was used to identify wetlands and to determine which of the previously mapped wetlands are likely to be sourced from the Broome Sandstone aquifer. A watertable surface was created from 148 points taken from bore data. The accuracy of this watertable surface was validated with drilling data. The results of the drilling show a strong correlation with the modelled surface, which in turn was able to identify 43 groundwater-dependent wetlands (some of which were previously unmapped) and validate 85 previously mapped wetlands as also being groundwater-dependent.
Number of Pages
50
Keywords
La Grange, groundwater area, groundwater-dependent wetlands, Broome Sandstone aquifer, watertable surface, modelling
Disciplines
Agriculture | Environmental Indicators and Impact Assessment | Environmental Monitoring | Fresh Water Studies | Hydrology | Natural Resources Management and Policy | Soil Science | Water Resource Management
Recommended Citation
Wright, N, George, R, Paul, R & Raper, GP 2016, ‘Identifying groundwater-dependent wetlands of the Broome Sandstone aquifer in the La Grange groundwater area, Western Australia’, Resource management technical report 397, Department of Agriculture and Food, Western Australia, Perth.
Maps
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Included in
Agriculture Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Fresh Water Studies Commons, Hydrology Commons, Natural Resources Management and Policy Commons, Soil Science Commons, Water Resource Management Commons
