The Barabba Gravity Low in the Northern Adelaide Plains has been interpreted as a southerly dipping trough-like depression in Precambrian bedrock, infilled with Tertiary and covered by a blanket of Quaternary sediments. All margins of this feature are defined by bedrock faults, except in the south where a bedrock ridge separates this area from the Northern Adelaide Plains Proclaimed Region (Water Resources Act, 1976). Drilling has verified the existence of aquifers similar to those further south in the Adelaide Plains. The reservoir properties of the aquifers are good but the moderate permeability of the overlying confining beds and their doubtful lateral closure against bedrock eliminate the possibility of storing natural gas in these aquifers. Several lignite seams were found during the drilling but they are uneconomical in terms of mining. Stock water could be produced from the upper aquifer but water from the lower aquifer is too saline to exploit for most purposes. Further testing of shallow groundwater is recommended to verify the results of this investigation and to explore for groundwater suitable for irrigation. Future exploration should be concentrated south of this area, where a more suitable gas storage structure is believed to exist.