Watersheds Scott A. Sinex production (modified by Barbara Gage ESI 2002 - Sinex

A map of streams in an area Main Stream streams tributary to the main stream tributary to the main stream

N Major stream in watershed Drainage divide high spot or ridge What is general streamflow direction? Any water flowing north?

Teachers’ Creek watershed N Teachers’ Creek watershed If the stream is Teachers’ Creek, the watershed is called the Teachers’ Creek watershed or drainage basin.

Drainage Divide Runoff to the west Runoff to the east Looking north up ridge

Major streams in watershed headwaters Watershed boundary headwaters Tributary to major stream mouth main channel mouth

N Area of collection of precipitation

N Watershed subwatershed Even smaller subwatershed

Nested watersheds airshed watershed Watershed is like a funnel Container such as Chesapeake Bay

Watershed and Airshed of Chesapeake Bay

http://www.dnr.state.md.us/streams/acid/page4.html