Page - 402 - in Book of Full Papers - Symposium Hydro Engineering

3. HEPP POSO –1 3.1. Location Hydroelectric Power Plant Poso-1 (4 x 30 MW Nett) is located in Poso River, administratively located in the District of North Pamona, Poso regency, Central Sulawesi Province. Geographically, the study area is located at position 120 ° 39'07.6 "- 120 ° 39 '35.8" east longitude and 01 ° 39' 49.5 "- 01 ° 40 '23.1" South Latitude. Figure 1. Map of HEPP Poso-I, Indonesia 3.2. Purposes of HEPP Poso-I Poso-1 Dam construction is part of Poso-1 hydroelectric project that serve as a regulating dam through Poso River from Poso Lake in Central Sulawesi Province. The purpose of the construction of Dams Poso-1 (regulating dam) is: - Regulating water for electric power. - Water supply in dry season. 3.3. Technical data  Reservoir Normal water level : +511,7 m Reservoir volume : 1,97 million m3 Reservoir area : 148 ha Maximum water level : +512,7 m  Dam Type : Gravity dam Heigh from deepest foundation : 23,5 m Dam volume : 62.547 m3 Crest lenght : 162,2 m Width crest : 12 m Freeboard : 2,3 m  Hydropower Plant Central Building Type : Semi Underground Installed capacity : 4 x 30 MW Nett (MW) Turbine : Francis Vertical 402