Assignment 3 Semester 1 2026
Unique number:
Due Date: April 2026
SCENARIO 1: GIS ANALYSIS OF FLOOD-PRONE FARMING AREA
To evaluate the flood-prone farming communities south of Enon in the Eastern Cape, a
Geographic Information System (GIS) will be used to integrate spatial and attribute datasets
and perform spatial analysis. The aim is to answer the three specified questions using
structured GIS procedures.
1. Farms adjacent to the river
OR
SCENARIO 2: GIS ANALYSIS OF THE KOGELBERG BIOSPHERE RESERVE
The Kogelberg Biosphere Reserve is a sensitive ecological area characterised by high
biodiversity and increasing human pressure. A Geographic Information System (GIS) will be
used to integrate spatial and attribute data to assess human activity within conservation
boundaries and support environmental management decisions.
1. Points of interest located inside the conservation area
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SCENARIO 1: GIS ANALYSIS OF FLOOD-PRONE FARMING AREA
To evaluate the flood-prone farming communities south of Enon in the Eastern Cape,
a Geographic Information System (GIS) will be used to integrate spatial and attribute
datasets and perform spatial analysis. The aim is to answer the three specified
questions using structured GIS procedures.
1. Farms adjacent to the river
Datasets used:
Spatial data: River layer, Buildings layer (farms identified as a building type)
Attribute data: Building type (to filter farms)
Method and analysis:
The first step is to query the attribute table of the buildings dataset using a Boolean
expression such as:
Building_Type = "Farm"
This isolates all farm features.
Next, a spatial selection is applied using the “Select by Location” tool. The spatial
relationship used is “adjacent to” or “within a specified distance” from the river layer.
In GIS practice, adjacency is often operationalised using a buffer. A small buffer (for
example, 10–20 metres) is created around the river using the Buffer tool.
The farm layer is then overlaid with the river buffer using spatial query:
Boolean spatial operator: INTERSECT
The GIS will return all farm features that intersect or fall within the buffer zone. The
number of selected features is obtained using the attribute table count function,
giving the total number of farms adjacent to the river (Baron, 2025).