waterdiversionslab

waterdiversionslab - Water Diversions Lab Trevor Nestor...

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Water Diversions Lab Trevor Nestor Period 1
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Questions Part One: 1.) The Salton Sea is located on the San Andreas Fault in southern California. The Salton Sea regional climate patterns include very hot summers (temperatures in the 90’s) and cool winters (temperatures in the 50’s). Annual precipitation is usually between 3 and 4 inches. The Salton Sea is located in a desertous region surrounded by the Santa Rosa range to the west, Orocopia range to the north, and the Chocolate range to the east. 2.) The Salton Sea was formed when in 1905 heavy rainfall and snowfall caused the Colorado River to swell up. The unusual swelling of the river caused flooding and erosion of the New River and the Alamo River. This flooding carried water into the Salton Basin and subsequently caused the Salton Sea to fill up. An accidental break in an agricultural diversion canal heightened the problem. The Southern Pacific Railroad attempted to stop flooding by dumping dirt into the headgates of the rivers, but efforts were in vain. The basin area had been under water before, and has had wet and dry periods in the past. 3.) The Salton Sea is growing more saline each year and is shrinking in size due to evaporation. Accumulation of pollutants has become an increasing problem because the Salton Sea has no outlets.
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4.) The Salton Sea’s creation has produced a haven for many species that would not otherwise live in the region in which it exists. The Salton Sea, for example, has altered migration patterns of many types of birds including the waterfowl. Many species of fish including the tilapia have been introduced to the lake. Because the lake has become increasingly more saline each year and pollutants have accumulated in it, species that have recently been introduced are tending to die with increasing frequency. Bird populations, for example, are in decline. For these reasons the ecosystem of the Salton Sea can be said to be unstable. 5.) The Salton Sea is environmentally important because it now supports bird populations, it now supports fish populations, and is a part of California’s dwindling wetlands. One government website claims that the Salton Sea supports up to 40% of the entire US population of the threatened Yuma clapper rail, 80-90% of the American white pelican, and 90% of the eared grebe.
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This document was uploaded on 11/19/2010.

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waterdiversionslab - Water Diversions Lab Trevor Nestor...

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