Describe The American River Basin

The upper basin states (including Colorado) were allocated a much greater percentage of the water than the lower basin states, while the upper basin states were developing at a much slower rate than those in the lower basin, notably California. Nevada (as of 1997) anticipated being unable to rely just on this water by 2015, while in 1997 California was already exceeding its originally allocated supply by diverting unused water from the upper basin states (Arizona.edu, 1997). It goes without saying that this legislation from the early twentieth century is not going to be sufficient in coming years as the development of these regions has progressed at a much faster rate than originally anticipated, and it is the responsibility of state and federal governments, water management companies, as well as appeals from farmers and non-farming residents alike to come to an agreement on how to apportion water and how to implement secondary hydration plans due to the rapidly declining resource that the once-magnificent Colorado River was able to supply us

One of the largest geographic physical structures in the United States is the Colorado River. Human activity and its interaction with this great river have an interesting history. The resources provided by the river have been used by humans, and caused conflict for human populations as well. One of these conflicts is water distribution, and the effects drought conditions have played in this distribution throughout the southwestern region. Major cities such as Las Vegas, Los Angeles, San Diego, and other communities in the southwest depend on the river. It provides water for over 20 million people, irrigation for 2 million acres of land, four thousand megawatts of hydroelectric energy, and over twenty million annual visitors for

The Mississippi River is one of the world’s major river systems not only in size, but in habitat diversity as well. It is the third longest river in North America. It flows 2,350 miles from its source at Lake Itasca through the center of the United States to the Gulf of Mexico.

The Colorado River Basin starts in the Rocky Mountains and cuts through 1500 miles of canyon lands and deserts of seven US states and two Mexican states to supply a collection of dams and reservoirs with water to help irrigate cropland, support 40 million people, and provide hydroelectric power for the inland western United States [1,2]. From early settlement, rights over the river have been debated and reassigned to different states in the upper and lower basin; however, all the distribution patterns lead to excessive consumption of the resource. In 1922, the seven US states signed into the Colorado River Compact, which outlined the policy for the distribution rights to the water [3], however, this compact was written during an exceptionally

I.) Water and Drought in California: Facts and data show that the weather we are experiencing here in California is that there is a difference between La Niña that brings the ocean temperature down and making them cooler and El Niño brings much warmer ocean temperatures. Currently california is experiencing a weakened La Niña. With a 55% chance of this weather continuing for the next 3 months. La Niña affect patterns of rainfall, atmospheric pressure, and global atmospheric circulation. Even though California is in a severe drought, with coordination, modernization, and compromise, California should be able to provide enough water for a growing population and growing economy.

The Sierra Nevada snowpack feeds Central Valley river systems and is a critical source of water in the state 's long dry season. Up to 30 percent of California 's water supply is from snowpack. Much of California 's extensive reservoir and aqueduct system is designed to store and capture runoff from the Central Valley watershed. The Central Valley watershed provides most of the water for Northern and Central California, as well as a significant proportion of Southern California 's usage.

The San Joaquin River is the backbone of the San Joaquin Valley. The valley is not only the nation's most agricultural area but it is also one of the entire worlds. Millions depend on the crops that come form this luscious valley. The river has gone through many drastic changes over its illustrious lifetime. Once it was a magnificent 350 miles long it is now one of the nation's ten most endangered rivers. The river once flowed with enough water to support steam ships and a salmon migration it now goes completely dry in some areas. The river does not have enough water to support itself any more and must take in water from various other places, such as the Pacific Ocean which

California has always had a warm climate, yet its supply of water has rarely been affected. In 2014 California’s water shortage issue truly began. Due to low amounts of snow in the winter in recent years, California has tried to equal out these shortages by drilling water from underground aquifers. Yet, underground aquifers recharge much slower than surface water sources. California has already made significant drawbacks to attempt to limit the amount of water they use, so these aquifers can recharge. But still resources continue going down and the Central Valley Aquifer’s water level is rapidly declining. Luckily, on April 7, 2017 the drought stage of emergency in California was ended. Yet the issue isn’t truly resolved. Glen MacDonald

Arizona has an incredibly large dependence on the Colorado River and groundwater. In fact, 39% of all water usage in Arizona is comprised of Colorado River water. Any dependence of that scale on any resource that originates in another area is always a major risk, as any major disaster or drastic change to the source of the river can cripple the state’s water supply. Furthermore, while Arizona does house the majority of the Lower Basin of the Colorado, the Colorado’s Upper Basin is shared between 4 other states, all with their own water needs and all with a susceptibility to drought. On the other hand, another 40% of all water Arizona uses is from groundwater sources. However, the Colorado River and these groundwater sources in the Colorado River basins have lost over 65 cubic kilometers of water over the last 9 years, with nearly 2/3 of it from groundwater loss due to over-pumping. This is because

A major problem in Southern California is that Los Angeles experiences very little rain all year, followed by intense downpours that last less than one day (53). Its unreliable rainfall severely hurts the region. In Northern California, mountains such as the Sierra Nevada allow for a huge range in rainfall over a short distance. “…a place on the western slope of the range may receive eighty or so inches of precipitation in a year, while a place on the east slope, fifty miles away, may receive ten inches or less” (58).

Most of us consider drought as a period of dry and hot weather with too little or no rain, and while any or all of these conditions might be existent during drought, the definition of drought is more complex and subtle. According to the United States Geological Survey, California Water Science Center (as cited in Congressional Digest, 2015, p. 2):

Sierra Nevada snowpack provide 75 percent to 80 percent of California’s freshwater, and as a result of the increasing temperature, the Sierra snowpack was only 14 percent of normal in February, 2014.3 The lack of water also causes more wildfires.

Diaz, H. F., & Wahl, E. R. (2015). Recent California Water Year Precipitation Deficits: A 440-Year Perspective*. Journal Of Climate, 28(12), 4637-4652. doi:10.1175/JCLI-D-14-00774.1

Powerful thunderstorms ran through California on Monday. The storms briefly knocked out the power to the Los Angeles’ airport and walloped the Sierra Nevada with blizzard conditions. Roads were flooded with over a foot of water in San Francisco Bay Area. Some counties saw about 11 inches of rain over 72 hours. Whiteout conditions are warned in Sierra Nevada by forecasters; 2 inches of snow was falling per hour. Sugar Bowl ski resort near Lake Tahoe saw 33 inches of snow overnight.

Prior to settlement of the western United States, the Colorado River roamed free. Starting from cool mountain streams, the river eventually became a thunderous, silty force of nature as it entered the canyons along its path. The river nourished wetlands and other riparian habitats from the headwaters in the Rocky Mountains to the delta at the Sea of Cortez in Northwest Mexico. Settlers along the river harnessed these waters mainly for agriculture via irrigation canals, but flooding from spring runoff wreaked havoc on agricultural land, prevented development in the floodplain and full utilization of the water, a waste in the eyes of western farmers. In order to meet current and future water demands in the west, the Federal Government