LESOTHO HIGHLANDS
WATER PROJECT
CONTENTS
• Phase I – Current Status• Phase II - Future
– Costs– Implementation program
• Performance• Effects of Climate Change
Treaty signed on 24 Oct 1986Phase II Agreement signed on
11 August 2011
WHAT IS THE LHWP ?
• Bi-national interbasin water transfer
- ultimate delivery 70 m3/s• 5 Phases - 30 year• Implementation - LHWC, LHDA &
TCTA• One of largest engineering projects• Worth $ 8 billion
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
Project governance
LESOTHO HIGHLANDS WATER COMMISSION
Gov of
Lesotho
Gov of South Africa
PHASE 1A & 1BCurrent
Phase 1
MUELA HYDRO POWER SWITCH YARD
POWERLINES
Bokong Vehicular Bridge
PHASE IIFuture
LHWP PHASE II
Polihali Dam163.5m high rockfill dam49.5m Saddle dam
Transfer Tunnel38.2 km long5.2m diameter
Kobong Pump storage101m high Kobong Dam6.3 km tunnels 11.5m dia
KA
TS
E
PO
LIH
AL
I
POLIHALI to KATSE TUNNEL
TBM
BREAKTHRU
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
SOCIALResettlement
• Polihali Reservoir Affects - 17 Villages = 534 Households = 2547 People
Other assets Affected By Reservoir ( Fields & Grazing Lands)
• 72 Villages Affected• Mokhotlong Town Excluded
ADVANCED INFRASTRUCTURE
ROADS
St Peters to Oxbow Rd
Oxbow to Seate Bridge Rd
Seate Bridge to Mapholaneng Rd, etc….
= OR = Matsoku to Polihali Route
RESIDENTIAL AREAS
Client, Engineer, Contractor facility, Lodge @ Mporosane and Polihali
Labour camps
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
TELECOMMUNICATIONS
Relocate existing lines
Polihale dam connection
Tunnel connection @ Polihali
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
KOBONG PUMP STORAGE
SCHEME
Upper dam
Tunnel
Powerhouse
Discharge tunnel to Katse Dam
PS
Katse reservoir
Tunnel Intake Water transfer to SA
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 2014 to 2016
• Construction to start 2016
• Completion end 2021
KOBONG 1200MW PUMP STORAGE SCHEME
TOP STRUCTURE OF THE LHDA – PHASE II
Chief Executive
Div Manager
Development and Operations Division
Div Manager
Social Development and Environmental
CHIEF OPERATING OFFICER (COO)
Div Manager
Phase II
& Project management Unit
PMU- Engineering- Social & environmental- Financial- Communications (PR)- Contracts / Legal …….
WATER TRANSFERRSA RESPONSIBILITY
TCTA
Funding procurement / administration
HYDRO FUNDING LESOTHO RESPONSIBILITY
Funding procurement / administration
Finance
Chief Financial Officer
PERFORMANCE
Key Performance Indicator
• Yield – Water Delivery (Volume & Quality)
• Power Supply – Revenue (Availability)
• Sustainability – Policy (IFR, EAP)
• Safety – Instrumentation (DSR)
Effects of Climate Change
4 x 1
THANK YOU