Example: biology
Search results with tag "Building a farm dam"
Building a farm dam - Department of Primary Industries
www.dpi.nsw.gov.aufrom a river or bore, the source of water will be rainfall that runs off the catchment. The catchment is the area that collects rainfall run-off and directs it to the dam. The catchment can be natural, like fields and forest, or it can be artificial, like roads and roofs. Generally, as catchment area increases, so does the volume of run-off water.