Larger Image

RAGP90 - Percentage of stream corridor buffered to 90 meters classified as pasture

The percentage of pasture land cover within 90 meters of a stream is calculated by summing the total number of pasture land cover cells underneath stream segments in the 1 km grid cell reporting unit and within a three cell buffer (90 meters) and dividing by the stream corridor’s total land area (all cells 90 meters adjacent to streams minus those classified as water). Cells inside the buffer zone but outside of the grid cell boundary are ignored. Animals grazing in pasture land may decrease vegetation cover possibly leading to increased runoff. Livestock may also impair stream banks by trampling riparian vegetation, which may cause increased sedimentation in the stream.