Fresh Water Systems

Introduction

Standing Water

Lake

- a large hole in the ground that holds standing water

- deeper than a pond

- sunlight does not reach the bottom of the lake (depends on the clarity of the water)

Pond

- a large hole in the ground that holds standing water

- not every deep

- can still be large in size

- sunlight reaches the bottom of it

Wetland

- low area of land where water collects

- saturated with water all or much of the time

- home to many, many different plants and wildlife

Flowing Water

Stream

- slower flowing waterway

River

- larger, faster flowing waterway

Watersheds

What Are They

- an area of land that drains into a body of water

- water that hits the ground and doesn't absorb or get evaporated will run-off along Earth's surface

- this run-off them flows along to larger bodies of water

- watershed includes both water and the land area that drains into it (rivers, streams, lakes, farms, forest and cities)

In Alberta

- Alberta water flows to the Arctic Ocean, Hudson Bay or Gulf of Mexico

- Landforms (like hills and mountains) determine how fast the water flows and in what direction

- Upstream portion of the watershed is called headwaters

- The end-point where it flows into a major body of water is the outflow

Relation to Land Use

- Pavement and cities effect the flow of the watershed, since nothing is soaked up by the ground

- Logging and removing forest can also change watershed patterns

- Soil conditions, vegetation and human settlement all impact how water runs-off