Earth's Changing Climate

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Pristine WaterscapeSouthern California
Largest lake in state was Tulare Lake
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Other large lakes Buena Vista and Kernand
overflow lands
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California contained over 5 million acres of
wetlandsmainly in the Central Valley.
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Flowing artesian well
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Deciduous Riparian Forest
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Oak savanna
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Coastal Salt Marsh
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Los Angeles ca. 1850
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Pristine WaterscapeSouthern California
Owens Lake was a saline lake east of the Sierra
Nevada mountains
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Ships crossed the lake carrying gold ore to the
railroads
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Pristine WaterscapeSouthern California
Today, the largest lake in California is the
Salton Sea. It existed as the dry Salton Sink
prior to 1906
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1960s
Today
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Pristine WaterscapeNorthern California
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California Wild Scenic Rivers
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San Joaquin River flows restricted by irrigation
dams
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Lack of flushing by flood waters leads to saline
soils
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Bay Area and Delta
200,000 acres of coastal marshes along SF
bayonly 35,000 left now
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Missions were located near water and an abundant
supply of native heathen who would work on
canals and irrigation
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Four presidios were expected to grow own food and
clothing as well as carry out military duties.
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Three pueblos were established and expected to
provide provisions for the presidios as well as
themselves
LA in 1850
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Crumbling Mission San Juan Capistrano in 1880
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US invasion of Mexico at San Pascual (1846)
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