The thesis describes a gee-hydrologic investigation of the underground water resources of the Condamine River alluvium between Ellangowan and Chinchilla.
A search was made of both published and unpublished literature that refers to various aspects of the Condamine River catchment which relate to occurrence and recharge of underground water supplies.
An attempt has been made to present the occurrence and use of underground water and surface water in the context of a total water resource of the catchment.
An investigation programme was designed to provide the necessary data for the determination of the location, extent, and long-term availability of underground water and to assess its suitability for use for irrigation purposes.
An investigation was undertaken into the feasibility of establishing artificial recharge works to augment the natural recharge of the aquifer. The performances of recharge bores and wells, sand and gravel filled trenches and a large open excavation were compared.
A distributed parameter, digital, computer model of the alluvial aquifer was developed by a joint effort of several personnel of the Queensland Water Resources Commission, and was used by the author to predict the future trends of groundwater levels for various pumping conditions and the declining availability of groundwater supplies as water levels decline.
On the basis of the experimental and computer modelling work, suggestions were made for the long-term management of the available underground water resources of Condamine River alluvium.