Gariep Dam is South Africa's largest inland water storage reservoir, situated on the Orange River on the boundary between the Northern Cape and Free State provinces, approximately 30 kilometres east of Colesberg. The dam's scale makes it a distinctive paddling environment — a wide, open expanse of water set within the arid Karoo landscape, where reflections of the surrounding terrain and sunsets are a notable feature of time on the water.

Kayaking and canoeing are permitted on the dam. Paddlers bringing their own equipment can launch at the Forever Resorts facility, which also offers a motorboat launch point. Organised kayak tours are available through at least one operator, Kayak Tours, which provides sit-in kayaks, waterproof bags, and camping equipment as part of a guided trip package. Boat cruises and kayaking are also offered through Tzamenkomst River Lodge, which is situated near the dam.

The Gariep Dam Nature Reserve occupies the northern banks and is home to Cape Mountain Zebra, Blue Wildebeest, and a variety of bird species. Paddlers on the water have views into this reserve, making wildlife sightings a realistic prospect during a trip. The broader Karoo setting means clear, dark skies at night, which is relevant for multi-day paddlers camping near the water.

The dam sits at the confluence of the Orange and Caledon rivers, and its position in the semi-arid interior means water temperatures and conditions will vary considerably between summer and winter. The open nature of the reservoir also means paddlers should be prepared for wind, which can affect conditions significantly on such a large body of water. Accommodation options near the dam range from camping to guest houses and self-catering establishments, giving paddlers flexibility in trip planning.