what is a watersheds
Â­A watershed is an area of land that feeds all the water running under it and draining off of it into a body of water.It combines with other watersheds to form a network of rivers and streams that progressively drain into larger water areas. Topography determines where and how water flows.Ridge tops surrounding a body of water determine the boundary of a watershed. Imagine turning an open umbrella upside down in the rain.t combines with other watersheds to form a network of rivers and streams that progressively drain into larger water areas. Topography determines where and how water flows. Ridge tops surrounding a body of water determine the boundary of a watershed.