Lake Dartmouth is located in northeast Victoria, approximately one hour from Wodonga, at the headwaters of the Mitta Mitta River. It is Victoria's largest water storage, with a capacity of 4 million megalitres, and sits behind the largest earth-walled dam in the southern hemisphere. The lake is remote and sparsely developed along its shores, with steep banks characteristic of the surrounding terrain. Mobile phone coverage is essentially absent on the lake except for a small area near the boat ramp, which is worth factoring into trip planning and emergency preparedness.

The primary boat launching facility is located at Six Mile Creek, approximately 10 kilometres from the township of Dartmouth. A second launch point is available at Eustace Creek campsite. Boating on the lake is permitted year-round, though all vessels must remain at least 700 metres from the dam wall. Water skiing and houseboating are prohibited due to the steep, slump-prone banks, which are susceptible to erosion from significant wave action — a safety consideration relevant to paddlers as well, particularly in windy conditions.

Day paddles of around 19–20 kilometres over 8–9 hours have been recorded on the lake, giving a sense of the distances involved for those planning multi-day or full-day trips. Camping with limited facilities is permitted in designated areas around the lake.

The lake supports populations of Brown Trout, Rainbow Trout, and Macquarie perch, the latter being a species of conservation significance. Lake Dartmouth is one of only three Victorian fisheries where anglers may legally take Macquarie perch. The surrounding area hosts a variety of bird and animal life. The steep, undeveloped shoreline and remote character of the lake contribute to a strong sense of isolation from the surrounding landscape.

Near the dam wall, approximately 5 kilometres from the township, there is a viewing area and lookout. The Dartmouth Dam Display Park, adjacent to the dam, includes information on the power station operations along with picnic tables and BBQ facilities. The township itself offers a general store, pub, motel, bed and breakfasts, and a caravan park for those requiring supplies or accommodation before or after paddling.