Salt Creek Watershed Project
A watershed is an area of land that is drained by a distinct stream or river system and is seperated from other watersheds by ridgetop boundaries.
Often called a drainage basin or hydrologic unit, a watershed can cover a large multi-state area like the Columbia River watershed or a relatively small area, like the watershed of a small stream, pond, or wetland. Larger watersheds are made up of numerous smaller watersheds, often called sub-watersheds or sub-basins.
Most watersheds are composed of a mixture of landscape types including uplands (those areas extending from ridgetops down to the riparian area), riparian areas (the areas adjacent to or near the river), wetlands, lakes, streams, and rivers. In a healthy watershed, native vegetation and wetlands intercept snow and rain that falls in the watershed, slowing the flow of water as it travels through the watershed, removing pollutants, and allowing water to percolate into the ground and recharge groundwater supplies.
No matter where you live, you are living in a watershed!