Stream Basics
Healthy vs Unhealthy
Fun Facts
100
Name one thing engineers use to stabilize a stream bank.
Rocks, wood structures, plants/vegetation
100
Heathy or Unhealthy?
Unhealthy. Completely eroded and exposed bank.
100
How many tons of sediment does the Mississippi River carry to the Gulf of Mexico every year?
a. 10,000 tons
b. 100,000 tons
c. 10 million tons
d. 500 million tons
d. 500 million tons
200
Niagara Falls and the Grand Canyon are large-scale examples of what process?
Erosion!
200
Healthy or Unhealthy?
Healthy. Dense vegetation protects the stream banks from erosion.
200
How many legs does a crayfish have?
Ten!
300
Why might an engineer care about bugs in a stream?
Because different bug types show the health of the stream system. Bug data tells us if our restoration is actually working!
300
Healthy or Unhealthy?
Healthy. Root wads help to stabilize the stream bank.
300
What year was the clean water act passed by Congress?
1972