In this laboratory assignment, we are tasked with identifying the most appropriate location for a developer to establish a new project. Our analysis will encompass five distinct layers, each based on the provided suitability ratings: Land Cover, Soils, Slope, Rivers, and Roads.
To begin, we will utilize the Reclassify tool to categorize the Land Cover into the specified suitability ratings.
Next, we will convert the vector soil layer into a raster format using the polygon to raster method, followed by reclassifying this new raster layer according to the designated suitability ratings.
We will then employ the slope tool to generate a slope raster from the Digital Elevation Model (DEM) and subsequently reclassify this new layer based on the suitability ratings.
Additionally, we will apply the Euclidean tool to create a raster representing the distance from the river, which will also be reclassified according to the provided suitability ratings.
Lastly, we will generate a distance raster from the Roads vector layer using the Euclidean tool and reclassify this new raster based on the specified suitability ratings.
After completing these steps, we will utilize the Weighted Overlay tool, assigning a scale of 1-5 and incorporating all raster layers, with each layer contributing 20% to the overall analysis.
The outcome will be a new map illustrating areas ranked from the most suitable to the least suitable for development.
Alternative Scenario
In the alternative scenario, we applied the Weighted Overlay tool again using the same layers but adjusted the percentage contributions as follows:
▪ Land Cover – 20%
▪ Soils – 20%
▪ Slope – 40%
▪ Distance to Streams – 10%
▪ Distance to Roads – 10%
This adjustment resulted in a new map depicting different suitability areas.
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