Presentation on theme: "What is a Watershed ?. When it rains, the water has to go somewhere. Where does all the water go? Down the sewer In the drains Downhill To the creeks."— Presentation transcript:
When it rains, the water has to go somewhere. Where does all the water go? Down the sewer In the drains Downhill To the creeks and rivers
Watershed divide: Ridges that separate two watersheds Watershed : All of the land that drains water into one place Watershed Divide How many watersheds are pictured? 3 1 3 2 Watershed
Western Continental Divide: Pacific Ocean and Gulf of Mexico Eastern Continental Divide: Atlantic Ocean and Gulf of Mexico Atlantic Gulf of Mexico Pacific Watersheds can be very large – often called “river basins” Hypoxic zone
Atlantic Gulf of Mexico Pacific Mississippi River Basin (Watershed) Ohio River Basin (Watershed) What is the largest watershed (basin) in North America? Most of Kentucky is in what watershed?
Ohio River Basin – parts of 14 states KY IN TN OH PA NY VA WV IL NC MI MD
Rivers A B B B C D G F F E H I 1 2 3 4 5 6 7 8 Kentucky Watersheds Lakes 1) Kentucky2) Barkley 3) Cumberland4) Dale Hollow 5) Barren River6) Nolin River 7) Rough River8) Cave Run A) MississippiB) OhioC) Kentucky D) GreenE) TennesseeF) Cumberland G) Big Sandy H) SaltI) Licking
Watersheds of the Kentucky and Green Rivers By starting at the river mouth and drawing a line to separate two rivers from each other, the approximate watershed for that river can be drawn.
1) 2) 3) 4) 5) 6) 7) 8) Fayette Co. Watersheds Kentucky River Boone Cr. W. Hickman E. Hickman S. Elkhorn Town Branch Cane Run N. Elkhorn
Fayette Co. Watersheds Kentucky River Boone Cr. Hickman S. Elkhorn N. Elkhorn
So, what is a watershed ? The land that drains water into a stream, river or lake. It can be very small or extremely large. Tracing the watersheds for central KY could be: Town Branch, S. Elkhorn Creek, Elkhorn Creek, Kentucky River, Ohio River, Mississippi River to the Gulf of Mexico.