Legacy product - no abstract available

The 'River Murray Corridor (RMC) Salinity Mapping Project', provides important new information in relation to salinity hazard and management along in a 20 km-wide swath along a 450 km reach of the River Murray. The project area contains iconic wetlands, national and state forest parks, irrigation and dryland farming assets and the Murray River, significant areas of which are at risk from increasing salinisation of the River, the floodplain, and underlying groundwater resources. The project utilised a hydrogeological systems approach to integrate and analyse data obtained from a large regional airborne electromagnetic (AEM) survey (24,000 line km @ 150m line-spacing in a 20 km-wide swath along the Murray River), field mapping, and lithological and hydrogeochemical data obtained from drilling. New holistic inversions of the AEM data have been used to map key elements of the hydrogeological system and salinity extent in the shallow sub-surface (top 20-50 m). The Murray River is known to display great complexity in surface-groundwater interactions along its course. Electrical geophysical methods (such as AEM) are able to map surface-groundwater interaction due to the contrast between (electrically resistive) fresh water in the river, and (electrically conductive) brackish to saline groundwater in adjacent sediments. The location of significant river flush zones is influenced both by underlying geology and the location of locks, weirs and irrigation districts. The study has also identified significant areas of high salinity hazard in the floodplain and river, and quantified the salt store and salt load across the floodplain. The study has also identified sub-surface factors (including saline groundwater, shrinking flush zones, declining water tables) linked to vegetation health declines.

This Record was originally issued as a BMR Engineering Geology Technical Note dated 11 March 1977. The original document was admitted as evidence in the Canberra Coroner's Enquiry into the explosion and fire at the Center Cinema, at hearings in August 1977. Minor amendments have been made to the original. Following an explosion at the Center Cinema in Canberra City on 10 February 1978, groundwater seepage into the building was found to be contaminated with hydrocarbons. This report discussess hydrocarbon pollution of groundwater in general and the hydrogeology of Canberra City. Hydrocarbon pollution makes groundwater unfit for drinking, and gas may accumulate in buildings and constitute a fire hazard.

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

Legacy product - no abstract available

Broken Hill Managed Aquifer recharge Projects 3D models and Fly-through

Legacy product - no abstract available

Legacy product - no abstract available