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RAGC0 - Percentage of stream corridor classified as cropland The percentage of cropland cover adjacent to streams is calculated
by dividing the number of cropland land cover cells underneath stream
segments in the 1 km grid cell reporting unit and dividing by the
stream corridor’s total land area (total number cells underneath
stream segments minus those classified as water). Agricultural practices
typically employ fertilizers, pesticides and other chemicals that
may be transported to streams in water runoff. The closer agriculture
is to a stream the more likely related pollutants will enter the
stream. Concentrations of pollutants transported into streams are
also more likely to be higher when agriculture is closer to streams. |