DWAF (July 2004) Managing Economic and Managing Economic and Demographic Information for Demographic Information for Modelling Modelling Brendon Wolff-Piggott Independent Specialist Consultant DEPARTMENT OF WATER AFFAIRS AND FORESTRY DEPARTMENT OF WATER AFFAIRS AND FORESTRY User Group Forum User Group Forum 1 July, 2004 1 July, 2004
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DWAF (July 2004) Managing Economic and Demographic Information for Modelling Brendon Wolff-Piggott Independent Specialist Consultant DEPARTMENT OF WATER.
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DWAF (July 2004)
Managing Economic and Managing Economic and Demographic Information for Demographic Information for
ModellingModelling
Brendon Wolff-Piggott
Independent Specialist Consultant
DEPARTMENT OF WATER AFFAIRS AND FORESTRYDEPARTMENT OF WATER AFFAIRS AND FORESTRY
User Group ForumUser Group Forum1 July, 20041 July, 2004
DWAF (July 2004)
1. Background
2. Opportunities
3. Current and envisaged systems
- Baseline information management
- Managing future estimates
4. Summary
Structure Structure
DWAF (July 2004)
BACKGROUNDBACKGROUND
DWAF (July 2004)
Information ManagementInformation Management in DWAF in DWAF
Management Decision-making
Source Information Processed Information
Source InformationSystems
Processed Information
Systems
External Data
Raw Data
Information Warehouse
CD: IM D: WRPS
DWAF (July 2004)
Minordams
Groundwater
Reservoir
SFRAs
Ecology
Irrigation
Urban
Industrial
Rural
Typical water resource systemTypical water resource system
Runoff
DWAF (July 2004)
Minordams
Groundwater
Reservoir
SFRAs
Ecology
Irrigation
Urban
Industrial
Rural
Study Identifies Additional InformationStudy Identifies Additional Information
Runoff
DWAF (July 2004)
OPPORTUNITIESOPPORTUNITIES
DWAF (July 2004)
Baseline data sets exist e.g. Census Planning estimates of long-term economic and
demographic scenarios related to water use have been made
Detailed studies can provide additional info Water Services estimates current population
using the Census Useful for national and catchment strategy
modelling and planning
Opportunities Opportunities
DWAF (July 2004)
CURRENT AND ENVISAGED CURRENT AND ENVISAGED SYSTEMSSYSTEMS
DWAF (July 2004)
Current and Envisaged Systems Current and Envisaged Systems
SYSTEM STATUS
Economic Information System Maintenance
Planning Scenarios System Maintenance
Population IMS Business analysis
Projections IMS Preliminary Analysis
DWAF (July 2004)
Economic and Demographic IMSEconomic and Demographic IMSin the Modelling Frameworkin the Modelling Framework
DWAF (July 2004)
BASELINE BASELINE INFORMATION INFORMATION MANAGEMENT MANAGEMENT
DWAF (July 2004)
Information collected for different purposes Often not easy to build on
– Different boundaries – Boundaries changes over time – Assumptions not stated
Relationship to catchments not in data
Issues to address Issues to address
DWAF (July 2004)
Information Sources Information Sources
SOURCE DETAIL (units)
Census (1996, 2001) 10’s of 1000’s
Water services 8 000
Planning 800
Magisterial districts (GGP) 350
Municipalities 250
DWAF (July 2004)
Example of Boundary Issues Example of Boundary Issues
Camperdown
Inanda
Umbumbulu
Pinetown
Ndwendwe
Durban
Richmond
New Hanover
Pietermaritzburg
Umlazi
Chatsworth
DWAF (July 2004)
Matching Different Information Matching Different Information
??
Census
Planning Estimates
Water ServicesInfo
DWAF (July 2004)
Proposed System Capabilities:Proposed System Capabilities:PopulationPopulation and Socio-economic and Socio-economic IMS IMS
Based on Census 2001 All data sets should be represented as
adjustments to the Census Metadata tracked for each data set Adjusted Census data aggregated as