A watershed is like a large funnel that carries the water that falls on it into a water body like Casco Bay. The water may flow along the surface in streams or rivulets or move underground, percolating through the soil or squeezing between cracks in rocks as groundwater, until it reaches the sea. The Casco Bay watershed collects water from 53 towns all the way to Bethel, Maine. A quarter of Maine’s population lives in the Casco Bay watershed on only three percent of the state’s land. Anything done on the land may eventually affect the bay.
Source:”BayScaping: Green yards that keep Casco Bay blue”
(Friends of Casco Bay)