PRIMA - Progressive Realisation of the IncoMaputo Agreement
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Transcript PRIMA - Progressive Realisation of the IncoMaputo Agreement
Integrated Water Resources Management Plans
for the Maputo and Incomati River Basins
Programme: PRIMA - Progressive Realisation of
the IncoMaputo Agreement
Tripartite Permanent Technical Committee (TPTC)
Lead Consultant: Aurecon
Trans-Boundary Water
Management in Africa
Africa’s 63 trans-boundary river
basins account for:
• 1/3 of the World’s major
international river basins
• 93% of the total African water
resource
• 77% of the Continent’s
population
Maputo Basin
Incomati Basin
Background to PRIMA
In 1986 the Governments of Moçambique, South Africa and Swaziland
signed an “Accord” to seek the cooperative management of their shared
water resources in the Maputo and Incomati River Basins.
Maputo River Basin: Area – 30 000 km2; natural MAR – 3 600 million
m3/a; existing storage in basin – 90% MAR
Incomati River Basin: Area - 47 000 km2 ; natural MAR - 3 500 million
m3/a; existing storage in Basin - 60% of MAR
In 2002 the Interim IncoMaputo Agreement (IIMA) on water sharing was
signed , but implementation slow & limited
In 2009 the Parties initiated PRIMA - “Progressive Realisation of the
IncoMaputo Agreement ”. Its primary objective is to support the Parties in
implementing the IIMA.
Objective of this IWRM Project under PRIMA
• Develop Integrated Water Resources Management
Plans for the Incomati and Maputo River Basins (one
Plan for each basin),
• which will enable the three countries to establish final
Comprehensive Agreements to follow the current
Interim Incomati-Maputo Agreement - IIMA
• which will aim to ensure the protection and
sustainable utilisation of the water resources of the
two Basins.
Process for developing IWRM Plan Phase 1
Process for developing IWRM Plan Phase 2
Maputo Basin Development Projects
Maputo Basin – Baseline and
Development Scenarios 1, 2, 3 and 4
Current-Day 1:50 Year (98% Assurance) System Yield
Baseline Water Requirement (Current-Day)
Stochastic System Modelling of Each Intervention’s
Contribution to Maputo Basin System Yield
• Configuration of complete Maputo system of subcatchments, dams, abstractions in a monthly
network model of input/output nodes and interconnecting channels
• 55 input nodes provide 77 years each of naturalised
system streamflows, previously simulated by
calibrated rainfall-runoff sub-catchment models
• Water allocations and operating rules controlled by
penalty structures
• Stochastic inflow sequences generated by a 55-D
ARMA (n,p) model that preserves serial crosscorrelations between all pairs of streamflow
sequences
Example of a
Typical
Network Model
Structure
Scenario 1: Optimised 2011 Reference Scenario
Preferred IWRM Scenario for Maputo Basin
Increase water supply to most urban areas - Swaziland
Develop irrigation projects in all three countries
Dams: Three new dams in Swaziland and two new dams in
Moçambique
Operationalise all Environmental Water Requirements
Invasive Alien Plant removal programmes
Curtail all future irrigation demands by 20%
Implement 20% WC/WDM for existing irrigation
Maputo Basin – Water Balance for Preferred IWRM Scenario
Current-Day 1:50 Year (98% Assurance) System Yield
Baseline Water Requirement (Current-Day)
Final IWRM Strategies
• Strategy for Resource Management and
Regulation of Water Use;
• Strategy for Water Resource Development;
• Strategy for Water Resource Protection;
• Strategy for Drought and Flood
Management;
Final IWRM Strategies (Cont.).
• Enabling Strategies
•
Stakeholder engagement, incl. public awareness
•
Financial,
•
Monitoring,
•
Information management,
•
Institutional organisation and governance,
•
Training and capacity building.
Current Steps towards Implementation of
IWRM Strategies for both Basins
• Tripartite Structures and their resourcing
agreed, but not established
• Organisations in each country responsible
for implementing each element of the Plan
confirmed, but necessary authority not yet
delegated
• IWRM Plan and Tripartite Structures still to
be signed off by the Parliaments of the three
countries
Thank you!
Upper Maputo River