Presentation is loading. Please wait.

Presentation is loading. Please wait.

Streams. Major US Rivers A drainage basin a.k.a. watershed is the area of land that drains to a particular lake, wetland or ocean.

Similar presentations


Presentation on theme: "Streams. Major US Rivers A drainage basin a.k.a. watershed is the area of land that drains to a particular lake, wetland or ocean."— Presentation transcript:

1 Streams

2 Major US Rivers

3 A drainage basin a.k.a. watershed is the area of land that drains to a particular lake, wetland or ocean.

4 DRAINAGE BASIN/Watershed

5

6 Where do rivers and streams get their water from? 3 sources

7 From its source to the Sea A stream begins at its headwaters, often in areas where there is constant runoff of rain or melting snow or an underground spring. The stream continues to flow and combines with other streams (called tributaries) until they become a river system The river will flow until its mouth (the end of the river) opens into the ocean, lake or sea The mouth of a river creates a Delta (a layer of sediment)

8

9

10

11

12

13 TRIBUTARIES, DIVIDES

14

15

16 ALLUVIAL FAN

17 What is a Stream Erosion? Stream erosion is the transportation of weathered material collected in the stream

18

19 Parts of a River Channel Bank (outside of a river) Bar (inside of a river) Bed (bottom of a river)

20 RIVER BED

21 STREAM LOAD

22 Suspended load

23 Dissolved Load

24 Youthful Steep gradient Rapids and waterfalls Stream course is straight No or very little drainage basin (the area of land that surrounds and include the major river and all of its tributaries.

25 Youthful

26

27

28

29

30

31 HYDROELECTRIC POWER

32 Mature Weathering and erosional effects have made the land wider and flatter Speed of river is reduced Starting to get curvy (meanders) Drainage basin are forming and more tributaries are joining

33 MEANDER Meander – a curve or bend in the river

34 Old Extreme meanders are present Land around it is very flat Speed is super slow Large drainage basin Oxbow lakes

35 Fig

36 Old

37 MEANDERS/OXBOW LAKE

38 Oxbow Lakes

39 OXBOW LAKES

40 EROSION/DEPOSITION

41

42

43 Rejuvenated River

44

45 NAME THE STAGE

46

47

48

49

50

51 FLOOD PLAIN

52 WATERFALL FORMATION

53 Summary Question A Changing River 200 years ago a stream was set as a boundary on some land. Now surveys show that this river is no longer used as an accurate boundary. Why?

54


Download ppt "Streams. Major US Rivers A drainage basin a.k.a. watershed is the area of land that drains to a particular lake, wetland or ocean."

Similar presentations


Ads by Google