The small Bullabul Salinity Province consists of an isolated, deeply weathered granitic system and adjacent upland alluvial deposits over a meta-sedimentary aureole. These horseshoe shaped uplands to the north, west and south of the province drain to a larger area of low plains to the east. The area contains local to intermediate scale Groundwater Flow Systems in the deeply weathered bedrock of the uplands and plains.
Saline discharge occurs at ‘break-of-slope’ locations as perched groundwater moves down slope through colluvium of the footslopes and foothills. Salinity has also developed on the plains adjacent to creeks due to structural controls and restricted drainage patterns.
Salinity mitigation options include both recharge and discharge control mainly involving tree plantings and tall wheat grass, as the granitic country is deemed not suitable for lucerne.
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