GEOLOGY

Detailed explanation-1: -A watershed is an area of land that drains or “sheds” water into a specific waterbody. Every body of water has a watershed. Watersheds drain rainfall and snowmelt into streams and rivers. These smaller bodies of water flow into larger ones, including lakes, bays, and oceans.

Detailed explanation-2: -A watershed is the region draining into a river, river system, or other body of water and may also be referred to as a drainage basin. How a watershed is shaped will determine how it drains, where flooding occurs, and how water quality is affected.

Detailed explanation-3: -It’s a land area that channels rainfall and snowmelt to creeks, streams, and rivers, and eventually to outflow points such as reservoirs, bays, and the ocean.

Detailed explanation-4: -Surface water seeps into the ground and recharges the underlying aquifer-groundwater discharges to the surface and supplies the stream with baseflow. USGS Integrated Watershed Studies assess these exchanges and their effect on surface-water and groundwater quality and quantity.

Detailed explanation-5: -Macro watershed (> 50, 000 Hect) Sub-watershed (10, 000 to 50, 000 Hect) Milli-watershed (1000 to10000 Hect) Micro watershed (100 to 1000 Hect) Mini watershed (1-100 Hect)