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The California Trail became the first important land link between San Francisco Bay and the eastern United States during the gold rush and became the route of the First transcontinental railroad in 1869. The gold rush brought approximately 200,000 new residents to California, and 36% of Californians lived around San Francisco Bay by 1870. [2]
Map of water storage and delivery facilities as well as major rivers and cities in the state of California. Central Valley Project systems are in red, and State Water Project in blue. California's interconnected water system serves almost 40 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. [1]
California region, with its 10 4-digit subregion hydrologic unit boundaries. The California water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey in the United States hydrologic unit system, which is used to divide and sub-divide the United States into successively smaller hydrologic units.
Chemicals and heavy metals from industrial wastewater are also toxic to aquatic life. They can shorten an organism's life span and its ability to reproduce while also endangering humans, since humans may feed on these organisms and any toxic impacts on these organisms may adversely impact humans. [8]
Watershed management is the study of the relevant characteristics of a watershed aimed at the sustainable distribution of its resources and the process of creating and implementing plans, programs and projects to sustain and enhance watershed functions that affect the plant, animal, and human communities within the watershed boundary. [1]
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This river drains a long, narrow basin of 230 square miles (600 km 2) [5] in extreme southern California, with its mouth less than 20 miles (32 km) north of the United States-Mexico border. Much of the river's watershed is mountainous, and the highest point is 5,730 feet (1,750 m) above sea level at Stonewall Peak in the
The Watershed Project is an environmental nonprofit organization based in the University of California’s Richmond Field Station. Its mission is "to inspire Bay Area communities to understand, appreciate and protect our local watersheds."