It is 90.3 metres (296 ft) tall and creates a 1,750,000,000 m3 (1,420,000 acre⋅ft) reservoir, the largest inland dam in the country.
Total capacity 1,750×106 m3 (1,420,000 acre⋅ft)
Catchment area 7,120 km2 (2,750 sq mi)
Surface area 96.4 km2 (37.2 sq mi)

The first spilling of Tugwi-Mukosi Dam in southern Masvingo is a boon for irrigation, as water impounded in the lake can supply the Lowveld greenbelt for three years without replenishment.

Filling up of the 1,8 billion cubic metres capacity reservoir, the largest interior water body in Zimbabwe, also augurs well for Government’s thrust to open more irrigated land for food and cash crops downstream.

Tugwi-Mukosi, commissioned in May 2017, spilled for the first time on Saturday night 25 Janu 2021, marking a milestone in food security through irrigation development. The water body has never filled since its commissioning in May 2017.

However, the spilling in a good rainy season means that the combined flows of the upper Tugwi and Mukosi rivers can now flow unimpeded down Tugwi River from the spillway, and flow into Runde River, already running at flood levels.