Merchant, M., Wilcox, B.

Table 17: Data needs.

The Land cover layer was the most important dataset in regards to the GIS model. It was used in 7 criteria or constraint layers to display spatial variation of suitable sites for siting a stormwater detention ponds. It was used in Figure 9, which displayed the current land cover in the study area, in Figure 14 to display the processed data before it is entered into the MCE model, and finally in Figure 16 and Figure 17 to display results of the models. The water table layer was primarily used to determine the spatial aspects of the water table criterion, and was used in Figure 16 and Figure 17, displaying the model results. The subcatchment basins layer was important in developing the study area boundary, and was used to display this boundary in Figure 8. The DEM layer was important for the development of the slope criterion and constraints. It was also used to develop the flow accumulation criterion and constraints, bringing the total use to four factors included in the MCE model. This data is displayed in Figure 14, Figure 16, and Figure 17, in processed form, and as results. The soils layer was primarily used to develop the soil criterion. This data is displayed in Figure 10, and was also used to produce Figure 14. It is also seen in the results displayed in Figure 16 and Figure 17. The Grand River Watershed layer was important in providing maps to display the study area and surrounding regions. This data was used in Figure 6 and Figure 8.

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