Lake and River Files

Looking for top-secret info on lakes and rivers? Pull files by clicking on the questions below.

• How are lakes created?
• What are the most common types of pollution in lakes?
• What are the most common types of pollution in rivers?
• Why keep cows out of streams?
• Can you drink straight from a lake or river?
• What is water treatment?
• What is streambank erosion?
• What is sediment, and why should fish be afraid of it?
• Can pesticides and fertilizers hitch rides with eroding soil?
• How do you measure muddy water?
• What is dredging?
• What do storm sewers have to do with our lakes and rivers?
• Can grass blades guard our water?
• What is dissolved oxygen, and why can’t you breathe underwater?
• What is the “water cycle,” and what does it have to do with dinosaurs?
• What in the world is a watershed?
• If a river has a mouth, does it also have lips?