Sand-and-Gravel Aquifer Contamination Potential
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资源简介：
The SNG Response theme grid is the relative vulnerability map for the Surficial Aquifer System. It was calculated using the ArcSDM extension and applying the weights of evidence method. A relative vulnerability class field is also in the table so that the grid can be symbolized into 4 vulnerability classes. These classes were developed based on weights of evidence vs. cumulative area breaks.
创建时间：
2017-05-11
