Watersheds are important because the water quality of a waterbody are affected by things happening in the land area above the river-outflow point. If something spills on the ground, if nothing intercepts it, it will likely end up in the stream.
Watersheds are important because the water quality of a waterbody are affected by things happening in the land area above the river-outflow point. If something spills on the ground, if nothing intercepts it, it will likely end up in the stream.