Warm Up 1/13/08Warm Up 1/13/081. Which of the following energy sources is most likely to be

abundant in California due to its position on a plate boundary?a. solar c. windb. geothermal d. nuclear

2. Which of these California geologic features formed as the result of erosion by glaciers?a. U-shaped valleys c. the San Andreas Faultb. Lassen Peak d. V-shaped valleys

3. Which of the following is NOT likely to be used to classify California soils?a. the local bedrockb. the region’s climate and plantsc. the region where the soil formedd. how people use the land in the region

Answers: 1) b. 2) a. 3) d.Answers: 1) b. 2) a. 3) d.

California’s Water California’s Water ResourcesResources

Chapter 13A, Section 2Chapter 13A, Section 2

California’s Water SupplyCalifornia’s Water Supply The main sources of California’s freshwater supply are The main sources of California’s freshwater supply are

precipitation, surface water, and groundwaterprecipitation, surface water, and groundwater California receives an average of about 58 cm of California receives an average of about 58 cm of

precipitation per yearprecipitation per year Northern CA and mountains receive most of the Northern CA and mountains receive most of the

precipitationprecipitation Some of CA’s precipitation flows back into the lakes, rivers, Some of CA’s precipitation flows back into the lakes, rivers,

and streams that make up the state’s drainage basins; and streams that make up the state’s drainage basins; supplies half of the freshwater needs for the yearsupplies half of the freshwater needs for the year

One of CA’s major sources of fresh water is the Colorado One of CA’s major sources of fresh water is the Colorado RiverRiver

Some precipitation seeps into the ground to become Some precipitation seeps into the ground to become groundwater; accounting for 30% of fresh water usedgroundwater; accounting for 30% of fresh water used

Most groundwater is used in the area from which the water Most groundwater is used in the area from which the water is withdrawnis withdrawn

DesalinationDesalination – removal of salt from ocean water to obtain – removal of salt from ocean water to obtain fresh waterfresh water

California’s Average Annual PrecipitationCalifornia’s Average Annual Precipitation

California’s Drainage BasinsCalifornia’s Drainage Basins

Concept CheckConcept Check

What is desalination?What is desalination? Desalination is the removal of salt from Desalination is the removal of salt from

ocean water to obtain fresh water.ocean water to obtain fresh water.

California’s Water ProjectsCalifornia’s Water Projects To meet freshwater needs throughout the state, To meet freshwater needs throughout the state,

California has an intricate network of water California has an intricate network of water storage and distribution systems, or water storage and distribution systems, or water projectsprojects

Aqueduct –Aqueduct – pipe, or channel, through which pipe, or channel, through which water flows from a higher elevation to a lower water flows from a higher elevation to a lower elevationelevation

The Los Angeles Aqueduct carries water 359 km The Los Angeles Aqueduct carries water 359 km from the Owens River east of the Sierra Nevada, from the Owens River east of the Sierra Nevada, providing L.A. with water since 1913providing L.A. with water since 1913

California’s State Water Project (SWP) is one of California’s State Water Project (SWP) is one of the nation’s largest water distribution systems, the nation’s largest water distribution systems, transporting water from northern CA to southerntransporting water from northern CA to southern

The federal government has also constructed The federal government has also constructed major water projects in CAmajor water projects in CA

California’s Water ProjectsCalifornia’s Water Projects

Yellow = Federal

Green = Local

Red = State

Water NeedsWater Needs Most of California’s water supply is used to grow Most of California’s water supply is used to grow

cropscrops The rest is used in homes, businesses, and The rest is used in homes, businesses, and

industries, or has been set aside for recreation industries, or has been set aside for recreation or wildlife useor wildlife use

About 80% of fresh water used each year goes About 80% of fresh water used each year goes toward irrigating cropstoward irrigating crops

Think of all the ways you use water, this adds up Think of all the ways you use water, this adds up to about 380 liters per person per dayto about 380 liters per person per day

The major use of water in industry is as a The major use of water in industry is as a coolant—either to cool products or the coolant—either to cool products or the equipment used to make productsequipment used to make products

CA preserves some streams and rivers as CA preserves some streams and rivers as fisheries and as recreation zones, not diverting fisheries and as recreation zones, not diverting the water from these areasthe water from these areas

AssignmentAssignment

Read Chapter 13A (pg. CA 4 – CA 26)Read Chapter 13A (pg. CA 4 – CA 26) Ch 13A AssessmentCh 13A Assessment

# 1 – 33 (pg. CA 31 – CA 32)# 1 – 33 (pg. CA 31 – CA 32) # 1 – 6 (pg. CA 33)# 1 – 6 (pg. CA 33)