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