Many local governments use impervious surface calculations to determine the storm water bills for properties. This story map shows the steps involved to use high resolution multispectral imagery to derive a pervious/impervious surface map for a residential area near Louisville, Kentucky. The map is then used to compute the total square footage of impervious features per parcel. We’ll be using an object-oriented feature extraction method to accomplish this.
Data Courtesy: the Louisville/Jefferson County Information Consortium.