Service Description: 2010 derived MTR polygon dataset with stream polyline dataset showing correlation to 2005 MTR data provided by Skytruth.org. Stream feature used to provide indication of potential environmental hazards.
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Description: This is a Mountaintop Removal (MTR) dataset for Eastern Kentucky, in the Appalachian mountain range. It reflects the total acreage of MTR affected areas reflected in tracts that are greater than 40 acres. The sum acreage of this 2010 data is 61,851.34 acres. This information was directly correlated to data tracts greater than 40 acres in a similar 2005 dataset identifying a total of 64,552.29 acres affected by MTR. This yields a reduction of 4% or approximately 2,701 acres.
The polygon portion of this dataset depicting is derived from a series of Landsat rasters covering R019 P034 and R019 P033. The MTR coverage calculation is a result of unsupervised reclassification of 2010 Landsat raster image, then reclassification for areas displaying MTR effects. The result was converted to a polygon feature class and systematically erased major rivers within 400m, highways within 400m, roads and minor rivers within 50m each. Then the resulting areas were selected by attribute of being larger than 40 acres. Accuracy of the dataset was checked by adding 30 random points for ex situ sampling. 28 of 30 were classified appropriately yielding an overall 93% accuracy rating.
It is likely that the reduction in coverage indicates reclamation efforts or potential expansion of mining in other areas of the region. The MTR data is joined by a stream polyline feature which was also generated by DEM information for the same area. Despite the overall decline in MTR areas evidenced by the data there is still significant downstream danger as the largest concentrations of MTR activity is centered around several of the larger stream systems in the South Eastern portion of the study area. The majority of the stream systems flow from South East to North West based on local elevations. There is also a significant area of MTR data in the North West portion of the area that has many stream features terminating in close vicinity to possible MTR sites. With these areas being at lower overall elevation, should a MTR or slurry accident occur it is likely these waters would be damaged further as they don't have the elevation to aid in clearing flow and are closer to population centers. Overall despite a potential decline in MTR activity in this area there is still high likelihood of hydrological damage.
Copyright Text: Skytruth.org provided landsat and DEM. Calculations conducted by Brandon Deusenberry, Lindsay Golden, Gil Castillo, Gary Crowe.
Spatial Reference: 32617 (32617)
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Spatial Reference: 32617 (32617)
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Spatial Reference: 32617 (32617)
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