Roodeplaat Dam is a concrete arch dam on the Pienaars River (also known along parts of its length as the Moretele River and Moreleta Spruit), a tributary of the Crocodile River, located near Pretoria in Gauteng, South Africa. Constructed between 1955 and 1959, the dam stands 55 metres high with a wall length of 351 metres, impounding a reservoir with a total capacity of approximately 43.5 million cubic metres across a catchment area of 684 square kilometres. The dam is classified as a warm monomictic impoundment, meaning it maintains stable thermal stratification during the summer months. Its hazard potential has been officially ranked as high.

Originally built for irrigation, the dam has become a significant recreational destination and also serves as a potable water source for Magalies Water, supplying areas north of Pretoria. Non-motorised boating is permitted on the dam, and kayaking and canoeing are established activities here. The Academy for Canoe Development is based at Roodeplaat Dam and regularly hosts training sessions and competitive events, including national-level kayak sprint competitions. The dam has hosted South African paddling events with significant athlete participation, indicating it is a recognised venue for flatwater sprint paddling.

Access to the dam is managed through the Roodeplaat Dam Provincial Nature Reserve. The main entrance is located off Moloto Road, though access arrangements and the availability of boat launching facilities at various points along the shoreline should be confirmed in advance, as conditions and openings can vary. Fishing resorts operate along the banks and may offer alternative access points. Permits are required for boating and fishing activities, and paddlers should verify current permit requirements and entrance fees with the Gauteng Department of Agriculture and Rural Development or the reserve management before visiting.

The reserve surrounding the dam offers birdwatching opportunities and hiking trails, which contribute to the overall natural character of the area. Accommodation options in the broader Pretoria area are plentiful, with several lodges and guesthouses in proximity to the reserve. Water quality should be considered given the dam's dual role as a recreational and potable water supply source; paddlers are advised to check current advisories from relevant authorities before use.