Dams are an important infrastructure that in some cases prevents seasonal flooding damage, as was the intention of the Teton Dam near Rexburg, Idaho. Built by the United States Bureau of Reclamation, the embankment dam was cheap to construct but failed in early June 1976. Some scientists have hypothesized that this failure was caused by wet seams that may have been present on the right abutment, as they were found on the left abutment following the collapse. Wet seams are seepage zones between the embankment and the sides of the valley (Leonards and Davidson, 1984). This is one of many theories and factors that led to the failure of the Teton Dam, and whether or not this could have been prevented has yet to be determined. However, research …show more content…
Planning first began in the 1930s, however, it was stonewalled by environmentalists who believed that it would cause more harm than good to erect this dam in the tentative location and filed multiple lawsuits against the Bureau (Hyndman and Hyndman, 2011). Congress, after the dismissal of the complaints, approved the project in 1964 and eight years later construction began (Gunn, 2006; Hyndman and Hyndman, 2011). The purpose of the dam was not only for providing irrigation water and hydroelectric power to eastern Idaho, as the soil is rich in minerals that makes for good farming, but for recreational purposes and flood control (Hyndman and Hyndman, 2011; Smalley, 1992). The annual spring flooding caused extensive damage, and the Bureau of Reclamation proposed this as the only practical means of controlling it (US Gov., 1976). The Teton Dam was completed in October 1975, and filling of the reservoir began almost immediately at approximately one foot of water per day (Hyndman and Hyndman, 2011; Seed and Duncan, 1987). Statistically the dam was 126 meters high, and 950 meters long and was set to hold 7650000 cubic meters of water (Smalley, 1992). It was a five zoned embankment with a compacted, centralized core built with the silt deposits near the site, as it had “good strength characteristics and …show more content…
The federal government has taken action in requiring “each federal agency to review its dam-safety activities and to strengthen its dam safety programs” (Gunn, 2006). Dams are now required to be inspected annually, with a detailed report of the dam every three years (Gunn, 2006). Moreover, “Congress passed several acts authorizing a natural dam-safety program” which works to protect Americans from dam failure, in addition to installing more instrumentation to monitor the dam’s stability (Gunn, 2006). Sherard (1987b) proposes that having bureaucracies design dams is dangerous and should be avoided; Seed and Duncan (1987) added that it should be reviewed by an outside group of engineers to ensure that no possible design flaw has been over looked. The Teton Dam was an inadequate and unacceptably designed for this environment, and any unanticipated conditions and problems with materials, such as low quality, should be taken into account (Sherard, 1987b; Seed and Duncan, 1987). The wet seam was a new discovery and a lesson in the hydrogeologic properties that were a result of the situation created by the Teton Dam (Sherard, 1987b). An additional lesson is that filling the reservoir at the recommended speed, in controlled conditions is essential, so that it is possible to lower the
There are nine dams in and directly leading to New York State’s Letchworth State Park. These dams have been built for a variety of reasons and affect nearly 400 miles of freshwater rivers in the Genesee River Basin of Western New York (Fish, n.d.).
Behind Millerton Lake, lies an existing structure made up of concrete of 319 foot high, this dam is called the Friant Dam. In the San Joaquin Valley below the project's authority of Fresno, Madera, Kern, and Tulare; the water holds and deliver up to a million acres. In 1933 and throughout 1934, the state couldn't find enough contributors to buy revenues bonds to complete the project. Luckily, the River and Harbors Act of 1935 by the United States Congress came through and financed under the United State Army Corps of Engineers.
In December 1936 the United States Department of the Interior authorized the Lower Colorado River Authority to construct a low dam at the site of an old crossing on the river known as Marshall Ford. Marshall Ford Dam was completed in 1941 through the collaboration of the United States Bureau of Reclamation (USBR) and the Lower Colorado River Authority (LCRA) of Texas. The original purpose of the dam was to prevent floods from devastating Austin, TX. The capital city had substandard heavy damage from previous floods since its establishment in 1846. Soon bureaucrats came together to create the Colorado River Project, wanting to create a series of dams along the Colorado River to create hydroelectric power and serve to control floods and droughts. With Buchanan dam well under way with a total of six planned Marshall Ford was the only dam designed primarily for flood control and the only dam in which USBR oversaw construction. With money scarce there was debate over the final height dam and it reservoir capacity. This issue resolves itself with the flood of 1938. Once completed Marshall Ford Dam would flood 65 miles of the Colorado to form Lake Travis, creating the largest of the seven reservoirs known as the Highland Lakes.
The one feature common to the Hoover Dam, The Mississippi river and the three gorges dam is that they all tried to control nature’s swings, specifically in the form of flooding. Before the Hoover dam was built, the Colorado river “used to flood spectacularly…but after 1900 the Colorado provoked a vehement response” (Pg 177). The response was simple, but large. The U.S. built several large dams, including the Hoover dam, on the Colorado to decrease its flooding and increase power and irrigation. Unfortunately, just as human control of the Colorado’s flooding increased, its organisms and habitats were detrimentally influenced, and the water became more and more salinated.
The South Fork Dam collapsed and unleashed 20 million tons of water from its reservoir. A wall of water, reaching up to 70 feet high, swept 14 miles down the Little Conemaugh River Valley, carrying away steel mills, houses, livestock and people. At 4:07 p.m., the floodwaters rushed into the industrial city of Johnstown, crushing houses and downtown businesses in a whirlpool that lasted 10 minutes. (New York Times, 1889).
The negative aspects of Glen Canyon Dam greatly exceed the positive aspects. The dam’s hydroelectric power supply is only three percent of the total power used by the six states that are served by the facility. There is a surplus of power on the Colorado Plateau and with more and more power-plants being created in the western hemisphere, Glen Canyon Dam’s power is not needed (Living Rivers: What about the hydroelectric loss). Although the ‘lake’ contains twenty seven million acre feet of water, one and a half million acre feet of water are lost yearly due to evaporation and seepage into the sandstone banks surrounding the ‘lake’ (Living Rivers: What about the water supply?). The loss of that much “water represents millions, even billions of dollars” (Farmer 183). If the government were to employ more water efficient irrigation practices, as much as five million acre feet of water per year could be saved.
As dams became old and upkeep costs rose many were torn down. This allowed the river to flow freely again and the salmon population increased by 20%. It was discovered that the best way to increase the diminishing salmon population was to simply restore the rivers to their original state. In 2008, a judge ordered for the Columbia and Snake River dams to spill water, allowing the rivers to flow as they would naturally. This water flow allowed the salmon to swim along the currents, as they would have once done
Congress to delete Echo Park Dam from the Colorado River Project in 1955. Other projects
Over the years Glen Canyon Dam has been the spark for hundreds of debates, rallies, and protests. These debates have been going on for almost forty years now. The fact is that the dam created a huge lake when it was built, this is what bothers environmentalists. This lake is called Lake Powell and thousands of people depend on its tourists for income. The lake also filled up a canyon called Glen Canyon, some people say it was the most beautiful place on earth. The anti-dam side of the debate has its basis in the fact that Lake Powell is currently covering Glen Canyon. It was very remote so few people got to witness its splendor. This is probably the reason the dam was built in the first place, ignorance.
Most of the destructions from the events of August 29th 2005, when Katrina Hit the City Of New Orleans, were not only caused by the storm itself; but also, by failure of the engineering of the levee system protecting the entire infrastructure of the city. The years of poor decision making and avoidance of the levee system led to one of the most catastrophic events in the history of the United States. Throughout our research, we have identified three key players in charge of the levee system design, construction and maintenance. These three organizations are the Unites States Corps of Engineers, the New Orleans Levee District and the Louisiana Department of Transportation. The consequences of the hurricane showed the organizations negligence in the design, construction and maintenance of the protective walls. Later independent sresearch showed that more than 50 levees and food walls failed during the passage of the hurricane. This failure caused the flooding of most of New Orleans and all of ST. Bernard Parish. The Unites States Corps of Engineers had been in charge of the of the levee system and flood walls construction since the 1936 flood act. According to the law, the Louisiana Department of Transportation is in charge to inspect the overall design and engineering practices implemented in the construction of the system. Once the levee systems were finished, they were handed over to the New Orleans Levee District for regular maintenance and periodically inspections. The uncoordinated actions of these three agencies resulted in the complete failure of a system that was supposed to protect the people of New Orleans. The evidence is clear that this catastrophic event did not happened by chance. The uncoordinated response of these...
The fallout of the 1927 flood demonstrates the one of many continuing struggle in dominating the Mississippi River despite understanding the true nature of the river. For example, “The average gauge readings through the last three months of 1926… of the three largest rivers… was the highest ever known… no one at the Weather Bureau or the Mississippi River Commission correlated or even compiled this information” (pg 175). The failure in understand the nature of the river prelude to more elaborate control schemes by expanding the federal government’s responsibility in seizing full control of the Mississippi River from states jurisdiction. The U.S Army Corps of Engineers is fully responsible in constructing va...
Dams made from dirt are very weak and the South Fork dam was built entirely with dirt. From an engineering standpoint dams made with dirt needed to be built ...
The Tacoma Narrows Bridge is perhaps the most notorious failure in the world of engineering. It collapsed on November 7, 1940 just months after its opening on July 1, 1940. It was designed by Leon Moisseiff and at its time it was the third largest suspension bridge in the world with a center span of over half a mile long. The bridge was very narrow and sleek giving it a look of grace, but this design made it very flexible in the wind. Nicknamed the "Galloping Gertie," because of its undulating behavior, the Tacoma Narrows Bridge drew the attention of motorists seeking a cheap thrill. Drivers felt that they were driving on a roller coaster, as they would disappear from sight in the trough of the wave. On the last day of the bridge's existence it gave fair warning that its destruction was eminent. Not only did it oscillate up and down, but twisted side to side in a cork screw motion. After hours of this violent motion with wind speeds reaching forty and fifty miles per hour, the bridge collapsed. With such a catastrophic failure, many people ask why such an apparently well thought out plan could have failed so badly?(This rhetorical question clearly sets up a position of inquiry-which iniates all research.) The reason for the collapse of the Tacoma Narrows Bridge is still controversial, but three theories reveal the basis of an engineering explanation. (Jason then directly asserts what he found to be a possible answer to his question.)
Ice dams in the Clark Fork area that backed up Glacial Lake Missoula actually caused some of the largest floods known to man. As ice will float, these ice dams would periodically rise up and burst, catastrophically flooding the Rathdrum Prairie, eastern Washington and into northern Oregon. Locally, these floods brought in glacial till and deep deposits of outwash that obliterated the St. Joe River once running through the Rathdrum Prairie. The southernmost edge of these deposits terminated where Coeur d’Alene exists today, damming the old St. Joe River and creating Lake Coeur d’Alene (Alt and Hyndman, 73). The new lake received the entire flow of the Coeur d’Alene and St. Joe Rivers, more than could be absorbed through the gravel deposits, thereby causing the lake to overflow and seek a new course, now known as the Spokane Ri...
The state offered to sell the canal, the railroad company bought it for the right of ways yet had no need to maintain the dam, which due to neglect, broke for the first time in 1862. McCullough stresses that man was responsible for the dam and its weaknesses nearly thirty years before the great flood as he explains how the initial repair work was carried out by unqualified people and how the discharge pipes were blocked up.... ... middle of paper ... ... McCullough makes a firm argument for the responsibility of man, and asserts the blame on the necessary people, therefore I feel he makes a fair and accurate assertion which I would agree with.