Posts Tagged ‘Watershed’
Tuesday, March 9th, 2010
Most of the Sacramento–San Joaquin Delta has been reclaimed for agricultural use, which has led to subsided land. View this segment to learn
- about the tidal freshwater marshes that used to exist in the Delta.
- how the construction of levees has altered the Delta.
- how reclamation of the marshes led to subsidence of the land.
- why subsided land makes levees prone to break.
Download the Viewing Guide for pre- and post-viewing discussion questions, activities, and additional resources to use with students.
Tags: Delta, Planning projects, Watershed
Posted in 4-5, 6-8, 9-12 | Comments Off on The Sinking Delta
Tuesday, March 9th, 2010
The west coast of North America once extended 27 miles west of the Golden Gate. The San Francisco Bay as we know it is a very young landform in geologic time. View this segment to learn
- how the west coast of North America has changed dramatically over time.
- when the Bay with which we are familiar was created.
- how San Francisco Bay is a flooded river canyon that formed as a result of rising sea levels at the end of the last ice age.
Download the Viewing Guide for pre- and post-viewing discussion questions, activities, and additional resources to use with students.
Tags: Climate, Sea level change, Watershed
Posted in 6-8 | Comments Off on The Formation of San Francisco Bay
Tuesday, March 9th, 2010
Mercury-laden sediments from mining operations in the Sierra Nevada and Coast Ranges still enter the vast network of streams and rivers that feed into San Francisco Bay. The mining activity dates as far back as California’s Gold Rush era. View this segment to learn
- how hydraulic mining techniques caused massive amounts of sediment to enter the San Francisco Bay watershed.
- where mercury (which was needed to separate gold from ore) was mined in the Bay Area.
- about the mercury that persists in area rivers and its toxic effects in the food chain.
Download the Viewing Guide for pre- and post-viewing discussion questions, activities, and additional resources to use with students.
Tags: Ecosystem, Pollution, Resource depletion, Watershed
Posted in 6-8, 9-12 | Comments Off on The Aftermath of the Gold Rush: Mining and Mercury in the Bay
Tuesday, March 9th, 2010
Together, California’s Central Valley Project and State Water Project stand as an engineering marvel that endowed the state with the ability to move water from the north to the arid south, permanently transforming California. View this segment to learn about
- Robert Bradford Marshall’s network of dams and canals designed to move Northern California water to the Central Valley.
- the rapid growth of California’s agricultural industry following the construction of the Central Valley Project.
- California’s two water projects that bring fresh water for drinking from the San Francisco–San Joaquin Delta to 23 million people throughout the state.
Download the Viewing Guide for pre- and post-viewing discussion questions, activities, and additional resources to use with students.
Tags: Delta, Growth of cities, Planning projects, Water projects, Watershed
Posted in 4-5, 9-12 | Comments Off on Moving California’s Water Supply
Monday, March 8th, 2010
The San Francisco Bay is a unique and biologically productive estuary. View this segment to learn
- about the size and scope of the estuary.
- about the Mediterranean climate of the Bay Area.
- that the estuary is a biologically productive region.
Download the Viewing Guide for pre- and post-viewing discussion questions, activities, and additional resources to use with students.
Tags: Climate, Ecosystem, Watershed
Posted in 4-5, 6-8 | Comments Off on A Unique Estuary
