Brain pop
What happens to rainwater after it reaches the Earth’s surface?

Storage

Evaporation and Transpiration
(Evapotranspiration)

Runoff

What’s it called when water is absorbed by the ground?

What happens to water after it infiltrates the ground?

Water occupies distinct zones

What do you need for infiltration to occur?

Think about factors that will allow water to INFILTRATE

Factors that Affect Infiltration
1. Permeable
2. Unsaturated
3. Gentle (flat) slope of land
4. Vegetation
5. Land Use
6. Rate of precipitation less than
Infiltration

Factors that affect runoff

The ground must be porous and permeable

Water occupies distinct zones

Water occupies distinct zones

http://earthguide.ucsd.edu/earthg uide/diagrams/groundwater/index.
html water table animation

Where does our drinking water come from

We get our water from water towers.
New York City gets their water from upstate reservoirs
People Drill wells for drinking water
Is ground water good to drink? YES because it is filtered as it sinks down.
Wells are drilled deep enough to reach water this varies throughout.
Remember the water table rises and falls.

Wells are drilled deep enough to reach water this varies throughout.
Remember the water table rises and falls.
What if it runs dry? Dig deeper or use less water.

Streams and Groundwater
Ever wonder why many streams, rivers, ponds, and lakes always have water in them even during dry periods? Where is the water coming from?

Because streams get water from the underground when it’s moist.

?
Excess water called?

Surplus: Excess amount of water flow. When?

Little or no water

Deficit: Decrease in water flow.
When does this occur?

Discharge: Amount of water in a body of water, rises and falls.

Where does the water go from runoff and small streams?

WATERSHED/ drainage Basin
.

Location A is in the zone of ___________?
While location B is in the zone of ______?
A
B