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.