More than half of Vermont’s roads are unpaved, and many snake up steep mountain slopes. As a result, the state already struggles to control soil erosion that damages roads, and prevent run-off that can pollute fresh water supplies.
So for more than a decade, the state of Vermont has improved road drainage through the Better Back Roads program.
Some of these projects include controlling the direction of the runoff – for example, moving water across the road instead of down it. It’s a technique used to direct excess rain to grass-lined ditches and other vegetated areas where it can be filtered and absorbed slowly into the soil.
Continue reading at Yale Climate Connections.