Plot of contour lines of nitrate concentration and location of feedlots for Castro County. Solid square indicates location of cattle feedlots. Plot of contour lines of nitrate concentration and location of feedlots for Cochran County. Solid square indicates location of cattle feedlots. Plot of contour lines of nitrate concentration and location of feedlots for Deaf Smith County.
Solid square indicates location of cattle feedlots.
Plot of contour lines of nitrate concentration and location of feedlots for Floyd County. Solid square indicates location of cattle feedlots. Plot of contour lines of nitrate concentration and location of feedlots for Bailey County. Solid square indicates location of cattle feedlots. Plot of contour lines of nitrate concentration and location of feedlots for Parmer County.