The dam was originally constructed by the Department of Defence during World War II to provide a reliable supply of fresh water to Darwin, completed in 1942.

[5] The environment around the dam is an excellent habitat for crocodiles, which Parks and Wildlife regularly patrol and survey to trap and remove many of these animals, especially during the wet season.

[6] In February 2014, an experimental hydroelectric generator was installed by the PowerWater in partnership with Charles Darwin University's Centre for Renewable Energy.

[7] A 2018 report prepared by the CSIRO included a detailed investigation of potential dam sites to meet the future needs of the region.

This report found that while Manton Dam could provide a short-term solution until a much larger storage can be created, there are some concerns over water quality.