Emmarentia dam, which is the longest dam in the world, is about 800 meters (2624.67 ft.) and the Johannesburg Botanical Garden is on the northern part of the shore.
The length of the dam is about 400 metres (1,310 ft) with a maximum height of 20 metres (66 ft) and a water surface of 8.8 hectares (22 acres). 
The Johannesburg Botanical Garden is on the western shore of the dam. 
