Without County Overlay:
With County Overlay:
_____________________________________________________________________________________
Procedures:
The following steps were taken in accordance with Viazanko, Andrea, "Predictive Model of Illegal Dumpsites in Westmoreland and York Counties, Pennsylvania" (2017). Theses and Dissertations (All). 1561.
Roads:
Road shapefiles were obtained from TDOT.
Euclidean Distance was used upon the roads polylines.
Extract by Mask was used to cut the extent down to the Upper Cumberland Region.
Roads were reclassed based on the following criteria;
0-492 ft = 3
492.01-984 ft = 2
984.01-14252 ft = 1
The resulting raster surface was then set aside until final step.
Landcover:
NCLD 2016 Landcover data was used.
Extract by Mask was used to cut the study area down to the Upper Cumberland Region.
The resulting file was then reclassed based on which land uses most commonly held UC Illegal Dumps. These values are shown in the following bar chart;
21 = Devoloped Open Space
22 = Devoloped, Low Intensity
23 = Devoloped, Medium Intensity
24 = Devoloped, High Intensity
Values 25-29 do not exist, which may skew the values
Values were then reclassified as such;
21-24 = 2
All other Values = 1
The resulting raster surface was then set aside until final step.
Population:
2017 Block Group polygon data from the Census Burea (obtained with the help of Chuck Sutherland) was used.
Calculate Geometry was used to calculate area, expressed as square kilometers, for each block group.
Calculate field was then used to calculate population density per square kilometer for each block group. Formula was as follows;
Population (B01001m1)/Area = Population Density per Square Kilometer
Polygon to Raster was then used upon the blockgroup.
Raster was reclassed as follows;
Pop Density/sqr kilom
0.00-0.11 = 0
0.11-50 = 1
50.01-100 = 2
100.01-150 = 3
150.01-250 = 4
over 250.01 OR 250.01-506.684 = 5
The resulting raster surface was then set aside until final step.
Slope:
TNDEM (obtained from Chuck Sutherland)
Extract by mask was used to cut the study area down to the Upper Cumberland Region.
Slope was ran on the resulting file using percent rise rather than degree.
Raster surface was then reclassed as such;
0.00-8.00 = 3
8.01-25 = 2
Over 25.01 OR 25.01-1000 = 1
The resulting raster surface was then set aside until final step.
Final Steps
Weighted Sum was used to combine the above raster files using the following weights;
Roads = 0.47
Population = 0.23
Slope = 0.15
Land Use = 0.15
The productive surface was then symbolized based upon a stretch type of equalized histogram.
___________________________________________________________________ The results of these procedures were 'proof of concept' and need further refinement based upon Upper Cumberland's illegal dump sites. As is, I am highly skeptical of the accuracy of these models as applied to the Upper Cumberland region. Refinement will be detailed with the next set of predictive models.