1. UNIT 6 STANDARDS: NCES 2.3.2, 2.4.1, 2.4.2 LESSON 1
Surface Water
UNIT 6
STANDARDS: NCES 2.3.2, 2.4.1, 2.4.2
LESSON 1

2. Lesson Objectives In this lesson, you will learn about:
What landscape features on earth are formed and changed by water
Floodplains
Deltas
How surface water moves materials
Load vs Capacity
How surface water impacts humans
Benefits and Hazards

3. Surface Water Movement
Water Cycle
The continuous recycling of the planet’s water.
Evaporation, condensation, precipitation, collection
The sun’s energy drives the water cycle

4. Overall Water Cycle *know steps

5. Steps in the Water Cycle
Precipitation
Run Off
Accumulation
Evaporation
Transpiration
Condensation
Snow, Rain, Sleet, Hail
Surface flow of water
Collection of surface water
Liquid to Gas state
Water from Plants
Gas back to liquid state
(REPEAT CYCLE)

6. Runoff What is runoff? Influencing Factors
Water that flows on the surface, down slope, and may accumulate.
Vegetation .slows the flow of runoff
Rate of Precipitation
Soil Composition
Slope…Angle of land

7. Stream Systems Tributaries carry water to collection points.
Types of tributaries
Brook
Stream
Creek
River
Precipitation that does not enter the ground runs off the surface.
All streams flow downslope to a lower elevation.

8. Stream Load Definition 3 Ways of Transport
All materials carried in the water are known as stream load.
Solution: Material dissolved
Dissolved soil or minerals
Suspension
Parts carried along in the water
Bed Load
Sand and pebbles pushed along on the bottom of the flow

9. Flood Plain Why Floodplain definition
A flood occurs when the water spills over the sides of the river onto land.
The broad flat area surrounding the stream bank where flooding normally occurs.
Great farmlands

10. Floods Nature Monitoring Floods are a natural occurrence.
Caused by heavy accumulations in areas
Man monitors river depths, rainfall, and accumulation areas to issue flood warnings
US Dept of Geological Survey monitors rivers for floods.

11. Major Floods in the Last 20 Years
New Orleans
North Carolina
Cause: Hurricane Katrina
Hurricane Floyd
Hurricane Fran

12. Human Influences Harm Benefits Can help remove pollutants
Removal of topsoil
Clearing land
Building dams
Pollutants
Industry
Waste Water
Pesticides
Storm Water
Benefits
Can help remove pollutants
Can clear river ways
Can be used to increase cities
Increased sanitation
“River Keepers”

13. Lesson Review 1. Explain 3 ways a stream carries its load.
2. Why does little water seep into the ground on steep slopes?
3. Why do people live in floodplains?
4. What is the cost associated with living in a flood plain?
5. How does a hurricane cause flooding in North Carolina so far from the coast?