Volume II - The Northern Cape Provincial Spatial Development ...

Table 3.4: Variables for towns and municipal indices
URBAN GROWTH POTENTIAL
Natural resources Nr Derivation methods and data sources Mun.
Availability of water 1 Mean annual precipitation (mm) (SA Weather
Bureau polygon shapefile) assigned to town
Yes
2 Towns: Proximity ( 4). (GIS analysis) (Mun: Length per
100sq km)
Yes
3 Groundwater potential (in million cubic metres)
per annum assigned to town by intersection of
towns with groundwater potential polygon
shapefile obtained from DWA. (Mun:
Groundwater potential (in million cubic metres)
per annum per sq km)
Yes
Agricultural potential 4 Perennial and annual commercial crops, National
Land cover (2000). (Towns closer than 10 km
from cultivated areas > 10 sq km). (Mun: Area of
perennial & annual commercial crops as % of
municipal area) (GIS analysis).
Yes
5 Weighted average grazing capacity (Large Stock
Units) (LSU) in closest area (Within Thiessen
polygon).(Dept. Agriculture)
Mining potential 6 Status of mineral deposits (Number of working
mines closer than 20 km (Mun: Status of mineral
deposits as number of working mines per 100 sq
km) (Council for Geoscience).
7 Size of unexplored minerals (Average rank size of
deposits closer than 20 km). (Council for
Geoscience)
Tourism Potential 8 Mean weighted SA Terrain Index (SATI) in
closest area derived from ENPAT (2002 )
9 Number of cultural and heritage sites (excluding
graves & burial sites) closer than 20 km derived
from ENPAT (2002). (Mun: Number of cultural
and heritage sites per 100 sq km)
Environmental sensitivity 10 % Conservation/Protected areas in closest area
(Thiessen polygon). (GIS analysis)
11 Weighted mean bio-sensitivity index per town
derived from ENPAT (2002)
Human resources Nr Derivation methods and data sources Mun.
Size of labour force 1 Total size (number) of the labour force
(Population census 2001). (Mun: 2007
Community Survey)
Yes
Quality of labour force 2 Labour force > 15 < 65 years with education levels
equal to or better than Grade 12 as percentage of
total labour force. (Population census 2001).
(Mun: 2007 Community Survey)
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
31