COORDINATES (degrees, minutes,seconds) and Lesotho. The maximum long-term transfer volume is 877 million m 877 million is volume transfer long-term maximum The Lesotho. and Africa South Africa’s South augmenting transfervia a watersupply Vaal to the throughRiver catchment, agreement an between release from Katse Vaal Damtothe Damis777 million m Africaregardlessto South storage ofthe V inthe dead storage reservoir ofthe bottom levelisat1,989 mandthe isat1,895m. of the LHWP Phase Iofthe Purpose 70 m accommodate to designed been has and Dam Katse of north km 18 approximately T Description catchmentD11E. (landlocked Africa)inquaternary bySouth T Location maximum transfer Lesotho ofthe implementation envisagedforfull HighlandsWaterP Transfer Tunnel has a maximum capacity of 807.56 million m I of the project also consisted of a 31-km tunnel from the is connected LHWP MuelaDamviaa45-kmtunnel(PhaseIofthe tothe he damisadoublecurvature concrete arch dam,1,993mabovesealevel.T River, Malibamatso his damissituatedonthe SenquRiver. ofthe whichisatributary ItislocatedinLesotho 29° 20’11”S LATITUDE K atse Dam , whichwascompleted construction in2005,includedthe ofK L 28° 30’25”E ONGITUDE aal orOrange catchments(ORASECOM, 2007a).Currently the 3 Mohale Reservoir to the /a. 3 /a. The dam has a full supply level of 2,053 m. The , whichwascompleted in2005).Phase K atse Dam, with the intention of intention the atse Dam,with atse Dam. 3 /a, and will be transferred he intake towerislocated roject (LHWP).K 3 /s, whichwasthe T he Mohale–K atse Dam atse (source: www.jacquesleslie.com) NAMIBIA Orange-Senqu SOUTH AFRICA River Basin BOTSWANA Katse Dam LESOTHO Katse Dam

Through this release, water is also used for hydropower generation, travelling Area–Capacity Relationship through a 4-m-diameter, 45-km tunnel, existing at a hydroelectric station near Muela, approximately 45 km from Katse Dam. During periods of water shortages, water Elevation (m) Storage (million m3) Surface area (km2) is discharged into the Mohokare (Caledon) River to provide water to the capital of Lesotho, Maseru. Releases are also made for the downstream ecological reserve of 2,053 1,950 35.80 approximately 65.86 million m3/a. 2,050 1,845 34.60 Physical information 2,040 1,520 30.50 2,030 1,234 26.70

Quaternary FSC* 2 Wall height Wall length 2,020 985 23.10 Dam name River catchment (million m3) FSA (km ) Owner DWA code (m) (m) 2,010 773 19.60

Katse Senqu D11E 1,950 35.8. Lesotho D1R002 185 710 2,000 593 16.40

* Live full supply capacity (ORASECOM, 2007a, WRYM datasets and DWA, 1990) 1,992 472 13.90 1,985 381 12.10

Demands/abstractions (million m3/a) 1,895 0 0.00 1:50 yield (million Maximum spillway Year of completion 3 3 Transfer to Vaal m /a) capacity (m /s) Domestic Irrigation Dam Vaal Basin To Vaal Dam 1996 Unknown Unknown 777 † 451–586 70 LESOTHO Sterkfontein Delivery Dam Tunnel ± 38 km long † ORASECOM, 2011 4.35 m Ø

FOURIESBURG Woodstock Dam Transfer BERGVILLE FICKSBURG Tunnel ± 45 km long 4.35 m Ø Tugela Basin

Matsoku Weir Mohale to Katse and Tunneltunnel transfer ± 3125 m high MASERU ± 32 km, 3.9 m Ø ± 6.4 km long Katse Dam 3.8 m Ø ± 185135 m high Mohale Dam ± 145135 m high Phase I of the Lesotho Highlands Water Project