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Modeling in a
GIS requires several input maps.
These are added together to simulate factors that affect water
quality such as septic system operation and erosion. ???We created a septic suitability
model to show areas in the watershed that are suitable and unsuitable for
septic systems. We also created
an erosion potential model to show areas that have high potential to affect
water quality through erosion and runoff. I will first talk about the septic suitability model.
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