The Great Flood Of 1889

Finally, the Elwha dam was removed in 2012 again for similar reasons as the previous dams. An additional reason for the Elwha removal was the dam’s dangerous materials, PCBs and asbestos [3], polluting the surrounding area, the cost to remove and rebuild the dangerous materials was astronomical compared to the economic and environmental benefits of removing it. The dam was drained in a slow controlled fashion similar to Glines Canyon, and the original flow channels were even restored. This resulted in salmon population restoration, and more biodiversity in the river system that spread to the

flooding. The dyke was one of the biggest in America at a mile and three quarters long. Colt’s

It didn't take long for the South Fork dam to become so overwhelmed that it broke and dumped water onto the town causing the deaths of 2,200 people. This was not the first problem they had with the dam though; structural problems with the dam were not a new development. Only two years after the finishing of the dam 2 leaks were discovered before the dam was even put into its full usage. They were forced to empty the dam so they could repair it. The dam suffered a major break on June 10, 1862, when the up-stream portion of the stone culvert running under the dam collapsed (Haddock, Vikki). There was little damage to property downstream, but a large section of the dam over the damaged portion of the culvert collapsed and was washed away. They dam was then closed and left with the large gap in it because of financial reasons until 1875 when the Pennsylvania Railroad sold the dam and also 500 acres to Benjamin Ruff who wanted to turn the area into a summer resort. Ruff's plan was to fill in the gap left in the dam and allow the lake behind it to refill to make a resort and the remaining water would run-off he had decided to sell the valves used to control the run-off for scrap metal (Johannson, Shelley). Ruff had hired a man to fill the gap who had some experience building railway embankments but no experience with dams. The plan was to add a double thickness of hemlock pilings was placed across

(Ref. 5) On May 29, 2015 which was Memorial Day the rain decided to pour. This left around 12 inches of rain in just hours. This flood caused a lot of damage to homes and buildings. Unfortunately, there was cases of people that did lose their lives. Air rescues had to be performed along with emergency evacuation due to severe flood for some people. It was almost at much severity as the tropical storm Allison that happen in

However, the dams were of faulty construction. Dam number one which caused the flooding was constructed of coarse mining refuse that Pittston had dumped into the Middle Fork of Buffalo Creek starting in 1968. This dam failed first on the heels of heavy rains. The water from Dam number three then took out dams number two and then number one. Dam number three had simply

The source of what became known as the “Great Molasses Flood” was a 50-foot-tall steel holding tank located on Commercial Street in Boston’s North End. On January 15, 1919, a crowded section of Boston was rocked by a massive tidal wave--not of water, but of molasses. The bizarre deluge came after a molasses holding tank burst and sent 2.3 million gallons of the dark-brown syrup swirling through the city streets. 21 people were killed and over 150 people were injured. (The Great)

Just after Dam No. 3 started to show symptoms of collapsing, the Pittson Company sent a bulldozer to dig a drainage pitch in an attempt to alleviate some pressure.

On May 31, 1889, a 35-foot-high wall of water, set loose by days of rain and a failed dam, rushed into the city of Johnstown, Pennsylvania. In its wake, most of the town was destroyed and more than 2,200 lives were lost. The Johnstown Flood was one of the worst natural disasters ever seen in the United States and brought in relief from all over the nation and world. For Clara Barton, the Johnstown Flood disaster was the first test for her newly formed Red Cross. About 3:00 p.m. on May 31, 1889, water had backed up to the point where it began to spill over the South Ford Dam. It wasn't long before the entire dam broke, sending 20 million tons of water rushing down the narrow Conemaugh Valley. The "terrible wave" reportedly sounded like a freight

The Johnstown Flood was a catastrophe that occurred in Western Pennsylvania on May 13st of 1889. The flood occurred when a dam on the Little Conemaugh River, South Fork Dam, failed to support heavy rainfall flow that caused the river to swell and the dam to be overloaded. Unfortunately, a short fourteen miles down the river lived the people of Johnstown. Johnstown was a prosperous yet modest western Pennsylvania town. The town had an iron company called Cambria Iron Company, which employed most of its men in producing steel products. The town, at the time, had a few phones, three local newspapers, and a handful of saloons. At the time, they were self-sufficient.

The American Red Cross team had 50 volunteers to help lead by Clara Barton. It was a major diester it overflowed all the dams and got into people’s house and destoryed their values. May 31st it was already flooding

The Johnstown Flood of 1889 was a terrible natural disaster. Sixty miles east of Pittsburgh in a valley near the Stony Creek, Alleghany, and Little Conemaugh rivers is where Johnstown is located. It all started on May 28, 1889 when a storm appeared over Nebraska and Kansas. The storm headed east and struck the Johnstown-South Fork area only two days later. The storm caused the worst downpour in this area with six to ten inches of rain in just twenty- four hours. The downpour caused trees to fall and rail lines to wash away. Elias Unger who was the president of the South Fork Fishing and Hunting club woke up to find the water in Lake Conemaugh swollen after the storm. The South Fork Dam was built to hold back the water in Lake Conemaugh. This

For instance, around 500 people were violently drowned to death by the rapid waters rising into homes and communities. Many people lost friends, and loved ones to this flood. Many tragically lost their homes and jobs too. Homes were destroyed, jobs were taken down, and people became devastated and depressed. A lot of people were able to go live will relatives, or friends, but a majority of them had nowhere to go.

The Ellicott City flood was destructive because it was on a high gradient stream. The high gradient stream made it flood faster, and had low stream discharge. Discharge is cross section of stream channel. It was also capable of moving large particles, which is an example of deposition and erosion. In the experiment, the ‘Main Street Ellicott City’ stream was more affected than the Meandering Stream. The Main Street Ellicott City stream was flooded faster, and more houses and cars were destroyed compared to the Meandering

In addition, farmland has been destroyed because of the floods and the decrease in delta sediment. The dam has reduced downstream nutrients and sediment flow. And has seriously impacted neighboring river and seacoast ecosystems.

On NBC Bay Area news, Four were arrested for vandalising the Bay Area dam that caused the loss of 50 million gallons of water. They slashed the inflatable dam which send millions of gallons of water into the San Francisco Bay. This cost $1 million in damage and it worsened California because of its drought. The vandalism happened on May 21, after a six month investigation, the four men were arrested under the suspicion.