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LESOTHO HIGHLANDS WATER PROJECT
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CONTENTS Phase I – Current Status Phase II - Future Performance
Costs Implementation program Performance Effects of Climate Change
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Phase II Agreement signed on
Treaty signed on 24 Oct 1986 Phase II Agreement signed on 11 August 2011
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WHAT IS THE LHWP ? Bi-national interbasin water transfer
- ultimate delivery 70 m3/s 5 Phases year Implementation - LHWC, LHDA & TCTA One of largest engineering projects Worth $ 8 billion
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WHY THE LHWP ? Augmentation for Vaal System in RSA
Millions people without water Cheaper alternative source Good quality water Opportunity for regional development Hydro-electricity for Lesotho
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LESOTHO HIGHLANDS WATER COMMISSION
Project governance Gov of Lesotho Gov of South Africa LESOTHO HIGHLANDS WATER COMMISSION
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PHASE 1A & 1B Current
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Phase 1
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MUELA HYDRO POWER SWITCH YARD
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POWERLINES
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Bokong Vehicular Bridge
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PHASE II Future
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LHWP PHASE II Kobong Pump storage 101m high Kobong Dam
6.3 km tunnels 11.5m dia Transfer Tunnel 38.2 km long 5.2m diameter Polihali Dam 163.5m high rockfill dam 49.5m Saddle dam
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POLIHALI to KATSE TUNNEL
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TBM BREAKTHRU
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Biophysical features Mitigation measures: Fish species
Natural grass and woodlots Sedimentation Erosion prevention programmes Rehabilitation of disturbed areas Rescue Indigenous and threatened flora and fauna Instream Flow Requirements IFR volumes and policy - Downstream losses & compensation Water quality Responsibility for monitoring
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Other assets Affected By Reservoir ( Fields & Grazing Lands)
SOCIAL Resettlement Polihali Reservoir Affects - 17 Villages = 534 Households = 2547 People Other assets Affected By Reservoir ( Fields & Grazing Lands) 72 Villages Affected Mokhotlong Town Excluded
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ADVANCED INFRASTRUCTURE
Roads St Peters to Oxbow Rd Oxbow to Seate Bridge Rd Seate Bridge to Mapholaneng Rd, etc…. = OR = Matsoku to Polihali Route construction power Reroute Letseng-Tlokoeng 33kV line Reroute Tlokoeng-Mapholaneng 33kV line Reroute Mapholaneng-Mokhotlong 33 kV line New line 132kV line (Kao option done by LEC to be considered later) = OR = Matsoku to Polihali line Substation Polihali Upgrade Ha Lejone sub station Residential areas Client, Engineer, Contractor facility, Mporosane and Polihali Labour camps FEEDER ROADS Mokhotlong to Mositeng Chaba Li Maketse to Moeaneng Ha Tlhakola to Makalong Ramoruti to Ha Pohla Ntlholohetsane to Ha Letjama Various road bridges Telecommunications Relocate existing lines Polihale dam connection Tunnel Polihali
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KOBONG PUMP STORAGE SCHEME
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Upper dam Tunnel Powerhouse Discharge tunnel to Katse Dam
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Tunnel Intake Water transfer to SA Katse reservoir PS
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KOBONG 1200MW PUMP STORAGE SCHEME
PROJECT STATUS Lower Dam = Katse Dam Upper Dam = Kobong Dam Dam height = 101 meters Headrace Tunnel length = 4270 meters Headrace Tunnel diameter = 11.5 meters Detailed Feasibility Study funded by Swedish Government commenced in 2012 Feasibility Study complete 2013 Detailed design to 2016 Construction to start Completion end 2021
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TOP STRUCTURE OF THE LHDA – PHASE II Chief Executive
CHIEF OPERATING OFFICER (COO) Div Manager Social Development and Environmental Div Manager Phase II & Project management Unit Div Manager Development and Operations Division PMU - Engineering - Social & environmental - Financial - Communications (PR) - Contracts / Legal ……. Finance Chief Financial Officer HYDRO FUNDING LESOTHO RESPONSIBILITY Funding procurement / administration WATER TRANSFER RSA RESPONSIBILITY TCTA Funding procurement / administration 27
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PERFORMANCE
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Key Performance Indicator
Yield – Water Delivery (Volume & Quality) Power Supply – Revenue (Availability) Sustainability – Policy (IFR, EAP) Safety – Instrumentation (DSR)
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Effects of Climate Change
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4 x 1
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THANK YOU
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