1. Rivers and Streams Court Monroe October 3, 2007

2. Water Cycle ~ the movement of H 2 O through the hydrosphere

4. Runoff ~ water flowing down slope along the Earth’s surface.

7. Factors that determine rates of water runoff Amount of vegetation Rate of Precipitation Soil Composition Slope

8. Factors that determine rates of water runoff Amount of vegetation

9. Factors that determine rates of water runoff Rate of precipitation http://waterdata.usgs.gov/ne/nwis/rt Started to rain

10. Factors that determine rates of water runoff Soil composition. Loose soil with heavy rains, with little soil to hold it in place will often cause mud slides.

11. Mud slide

15. Factors that determine rates of water runoff Slope

16. Stream Systems Brooks and Creeks -> Streams Streams --> Rivers Rivers --> Watershed areas

18. Continental Divide

19. Stream Load ~ All the materials that the water in a stream carries. Solution ~ Dissolved minerals. Suspension ~ Particles held up by the moving water. Bed load ~ Particles bounced along the bottom of the stream.

20. Stream Load ~ All the materials that the water in a stream carries. Solution ~ Dissolved minerals. a.Usually salts, or salt forming ions. b.Counted in parts per million (ppm).

21. Stream Load ~ All the materials that the water in a stream carries. Solution ~ Dissolved minerals. See page 216 in book.

22. Stream Load ~ All the materials that the water in a stream carries. Suspension ~ Particles held up by the moving water.

23. Stream Load ~ All the materials that the water in a stream carries. Bed load ~ Particles bounced along the bottom of the stream.

24. Stream Velocity and Carrying Capacity Stream Velocity based on how fast water flows. Carrying capacity is how much of a stream load a stream can….carry. Based largely on discharge. m 3 / s = meters x meters x meters ÷ seconds

25. Floodplains Flood ~ too much water in one place at one time. Floodplain ~ where all that water goes a.Nice an flat b.Firtile soils c.Sometimes covered with water i 10 year flood ii 50 year flood iii 100 year flood iv 500 year flood