And Roads A road can carry a lot of fast moving traffic. It can also carry a lot of fast moving water.
Water gushing along a road can carry some serious run- off.
A road can make landslides and erosion more likely and more severe. And a road near a stream creates an added threat to the fish that live there. Building a road along the hill is like adding a rain gutter to your roof. When rain falls on the roof, it flows down to the gutter where it is concentrated into a stream that shoots quickly down a spout with a lot of force. Now imagine the hill with a road and a stream nearby.