A watershed is the land that water flows across, under, or through on its way to a stream, river, lake, wetland or other body of water

is surrounded by a divide, or natural, PARTS OF A WATERSHED Tributary Smaller rivers or streams that flow into a larger river or stream. Divide/ Ridgeline Higher ground separating two adjacent streams or watersheds. This larger body of water may be a bay. River drains Into a larger body of water The watershed is surrounded by a divide, or natural, elevated boundary

This is the Betsiboka River, PARTS OF A WATERSHED Flood Plain Flat, border areas on each side of a river. Which allows water to spill out / overflow at times of high flow. The sediment is carried down stream & settles out or is deposited into the bottom of the slower moving sections of river. Sediment Materials such as rock fragments & grains that have been transported by wind, water, or glaciers. This is the Betsiboka River, Madagascar. Taken by the Space Shuttle showing the impact of logging . -2002

Tributaries that flow into the Chesapeake Bay Of the 50 major tributaries that feed to the Chesapeake Bay just three deliver almost all the fresh water for the bay. 1. Susquehanna River ~50% 2. Potomac River ~ 20% 3. James River ~ 15% *See if you can find them on the next slide!

Susquehanna River Potomac River James River

Major watersheds in Virginia There are 5 watersheds in Virginia but only 3 major areas where water can flow. Chesapeake Bay North Carolina Sound Gulf of Mexico (Mississippi Watershed)

1. Chesapeake Bay Watershed Chesapeake Bay

2. North Carolina Sounds Watershed

3. Gulf of Mexico Watershed

The Largest Watershed In Virginia Chesapeake Bay Watershed covers 60% of Virginia. That equals 64.000 square miles and covers 6 states!!

Watersheds can be Broken Down into Smaller Watersheds… Watersheds can be Broken Down into Smaller Watersheds….. Virginia’s Top 5 smaller watershed’s - James (River) -York (River) -Rappahannock (River) - Potomac/Shenandoah (River) - Atlantic Coastal See if you can locate them in next slide!!!

Virginia’s Watersheds

Potomac River Watershed Loudoun County Potomac River Watershed -is part of the Chesapeake Bay Watershed System

Loudoun County Watersheds Aldie, Virginia Where does our water flow? Hint it goes south east…..into the ______________ __________. After that the water flows into the Potomac River.

Watershed Notes…Answers!!! ridgeline divide tributaries Flood plain sediment 50 20 15

5 60% 60,000 6 Potomac Bull Potomac Groundwater Runoff Infiltration

Homework Review 2nd Map 1st Map http://www.dgif.virginia.gov/education/sol/va-watersheds-bw.pdf

2nd Map: Find Loudoun County on your map and outline it in RED

Virginia’s Watersheds Potomac Watershed

The Major Rivers In Virginia

Virginia’s Rivers drain into five different places Atlantic Ocean Chesapeake Bay NC Sounds Yadkin Mississippi River

Loudoun County Watersheds

Goose Creek Watershed

Goose Creek

Catoctin Watershed

Activity: Location and Size of Virginia Watersheds

Sources: http://www.savethebay.org/land/landuse/maps/wash-region.gif http://education.usgs.gov/common/resources/mapcatalog/images/image/chesapeake_satellite.jpg http://www.mariner.org/chesapeakebay/images/hm_map.gif http://chesapeake.usgs.gov/images/baywaterinputmonitor.jpg http://www.cnr.vt.edu/PLT/potomacshenandoah/map/loudoun.gif http://erg.usgs.gov/tilley/images/image5.gif http://www.pecva.org/01filespublic/maps/GooseCrkMap576x499.jpg http://loudoun.vhost.vipnet.org/images/water/watersheds.jpg

HOMEWORK

Potomac River Watershed is part of the Chesapeake Bay Watershed System Loudoun County Potomac River Watershed is part of the Chesapeake Bay Watershed System

Zip codes: 20152 or 20105 Middle Potomac - Catoctin Watershed 02070008 Middle Potomac – Anacostia-Occoquan Watershed 02070010

Catoctin Watershed

Anacostia – Occoquan Watershed

Get out your Vocabulary (Item 2) 6. Runoff 7. Ground Water 8. Aquifer 1. Watershed 2. Divide 3. Tributary 4. Bay 5. Estuary

Watershed An area of land in which precipitation collects and then flows and drains into one body of water.

is surrounded by a divide, or natural, PARTS OF A WATERSHED 3. Tributary Smaller rivers or streams that flow into a larger river or stream. 2. Divide Higher ground separating two adjacent streams or watersheds. This larger body of water may be a bay. River drains Into a larger body of water The watershed is surrounded by a divide, or natural, elevated boundary

4. Bay A body of water partly enclosed by land, but having a wide outlet to the sea.

Other Bays in the U.S. Tampa Bay San Francisco Bay Bay of Fundy

5. Estuary A place where fresh and salt water mix 5. Estuary A place where fresh and salt water mix. (bay, salt marsh, mouth of a river)

Estuary – fresh water meets salt Water

6. Runoff Precipitation that travels across the surface of Earth in streams, rivers, drains, or sewers.

7. Ground Water Water that is stored underground that seeped into the soil, supplying water for springs and aquifers.

Aquifer: An underground bed or layer of Earth, gravel, or porous stone that contains water.

Use each word in a sentence. Vocabulary words 1-8 on the back of item # 2