This reconnaissance gravity survey comprised 3883 gravity stations read on a regular 5-mile grid spacing. Late in 1963, GSI also made an additional 819 point gravity readings at 1/2-mile station intervals along existing UGC seismic lines (this work being called the Alton Downs East Gravity Survey). In the subject final report, regional scale gravity anomalies are interpreted, using the aeromagnetic TMI contour map plus density data of key formations. Two Bouguer gravity maps, 2 geological summary maps showing major positive and negative structural axes and faults, and 3 Bouguer gravity profiles are presented. Areas of interest are recommended.