The park lies on the border between the dry northern Adelaide Plains and the wetter Mount Lofty Ranges. Based on climate measurements for nearby Parafield Airport, the park has an average rainfall of , an average winter daily temperature range of 6.2—15.6 degrees Celsius and a summer range of 16.5—29.7. Due to the risk of flooding after heavy rain, the park's waterways have been dammed, though they are dry for much of the year. The park's topography ranges from steadily sloping in the west, to hilly in the east. Its lowest point, on the western edge along Bridge road, is above sea level, rising to at the Para Trigonometric Point in the park's southeastern corner. Flat land on the western side has red-brown soil with the remainder having Terra Rosas, Redzinas and fine-textured mallee soils.