1. What are ephemeral streams? Streams that regularly exist for short periods of time, usually during a rainy period, and may have defined channels even when they are dry.

2. What are intermittent streams? Streams that flow at different times of the year, or seasonally, when there is enough water from either rainfall, springs, or other surface sources such as melting snow or even discharge from a wastewater treatment facility.

3. What are perennial streams? Streams that flow year-round.

4. What is stream order? A stream classification system.

5. Image: Jarek Jasiewicz Several Methods of Stream Classification

6. Strahler Stream Order It takes two streams of the same order, coming together, to make the next larger order. Two first order streams make a second order stream. A second order and a first order is still a second order. Image: Jarek Jasiewicz

7. Image: U.S. Corps of Engineer Strahler Stream Order

8. Image: U.S. Corps of Engineer Strahler Stream Order

9. Image: U.S. Corps of Engineer Strahler Stream Order

10. Image: U.S. Corps of Engineer Strahler Stream Order

11. Image: U.S. Corps of Engineer Strahler Stream Order

12. Image: U.S. Corps of Engineer Strahler Stream Order

13. Image: U.S. Corps of Engineer Strahler Stream Order

14. Image: U.S. Corps of Engineer Strahler Stream Order

15. Image: U.S. Corps of Engineer Strahler Stream Order

16. Image: U.S. Corps of Engineer Strahler Stream Order

17. Image: U.S. Corps of Engineer Strahler Stream Order

18. Image: U.S. Corps of Engineer Strahler Stream Order

19. Indicate the order of streams by writing 1, 2, 3, 4, or 5.