Engineering Components

PHASED DEVELOPMENT Of THE MAIN FEATURES OF THE PROJECT

PHASE MAIN RESEVOIRS

Name Katse 1B Mohale
Cumulative Catchment Area (km²) 1 866 945
Cumulative Mean Annual Run-off(hm³) 622 314,7
Total Storage(hm³) 1950 810
Active Storage(hm³) 1519 720
Full Supply Level (masl) 2035 2075
Minimum Operating Level (masl) 1989 2005
Type of Dam Arch Embarkment
Height of Dam(m) 180 140
Crest Length(m) 710 564
Volume of Dam(hm³) 2,2 8,5

TRANSFER TUNNELS

Name Length (km) Excavated diameter(m) Lined Diameter (m)
Katse-Muela 45 4,95 4,35
Mohale-Katse 32,0 4,0 3,4
Katse-Muela II 45 5,5 4,9