I am using ArcGIS.
My point represents a monitoring station and is located within a polygon representing a river catchment.
I have created a buffer of 300m representing the detection range of the monitoring station and I have clipped this to the polygon area using the intersection tool.
I want to further clip the buffer region so that it only contains the polygon area in 'line of sight' from the monitoring station.
The image shows the GIS output I have so far achieved, with the clipped buffer region in purple, but with areas marked in red that are not in line of sight of the monitoring station and should therefore be removed. Is there a tool to achieve this, perhaps with radiating lines from the monitoring station?