Johnstown flood

It began to prosper with the building of the Pennsylvania Main Line Canal in and the construction in the s of the Pennsylvania Railroad and the Cambria Iron Works. With a population of 30, it was a growing industrial community known for the quality of its steel. The valley had large amounts of runoff from rain and snowfall. The area surrounding Johnstown is prone to flooding due to its location on the rivers, whose upstream watersheds include an extensive drainage basin of the Allegheny plateau.

Johnstown flood

On May 31, a Johnstown flood of rushing water three stories high struck the city of Johnstown Pennsylvania.

In its wake most of the town was destroyed and over 2, people were killed. Every state in the nation sent some type of relief, and the people of sixteen foreign countries, including Russia, Turkey, France, Britain, Australia and Germany sent aid.

After viewing large pictures use the "back" button on your browser to return to this page. The state had operated a canal system between Philadelphia and Pittsburgh and built the dam for dry season storage.

Morris, principal engineer for Pennsylvania, designed the dam and, inconstruction began in a valley Johnstown flood the town of South Fork. Construction was completed inwith delay due mainly to financial difficulties. Considerable care went into the construction of the new dam.

The valley floor was cleared down Johnstown flood the bare rock. The upstream part of the embankment was built up of successive rolled layers of clay and earth, 2 ft thick, which were "puddled" by letting them sit under water for a few days to create a watertight barrier. The exposed upstream puddled ends were then covered with shale and small stone called "riprap" so that the action of the water that would fill the reservoir would not wash against the dam and weaken it.

To add weight and strength to the embankment, the core of the dam consisted of shale, earth and small stones while the downstream section of the dam was built up of mostly rock, many weighing over 10 tons.

Officially referred to as the Western Reservoir, the site became locally known as the South Fork Dam and was a "mature example of earth and rock dams. The earth and rock used in its construction was 10 ft thick at the top and over ft thick on the valley floor. Running under the center of the dam was a huge stone culvert used to discharge water into the South Fork Creek to be fed to the canal via the Little Conemaugh River.

The water into the culvert was controlled by five sets of valves and cast iron pipes 2 ft in diameter. In the event that the discharge culvert could not handle water flows during heavy rains, a 85 ft wide spill-way was cut through the solid rock of the hillside near the eastern end of the dam.

In June ofthe valves controlling the flow of water into the culvert were closed. By August the reservoir was 40 ft deep. Engineers decided it would be unsafe to fill the reservoir much higher for the first two years.

Lack of rain the following year depleted the reservoir.

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Coming up at JAHA Johnstown, located at the confluence of the Little Conemaugh River and Stony Creek, was 14 miles downstream from Lake Conemaugh, a reservoir turned recreational lake that was owned and maintained by the prestigious South Fork Fishing and Hunting Club.
Citation Information Surrounding areas [1] The Johnstown flood of ; also known as the second great flood of Johnstown, and the Johnstown disaster, began on the night of 19 July when flash floods hit the area of Cambria Countyaround JohnstownPennsylvania and the Conemaugh Valley.
Before Your Museum Visit It began to prosper with the building of the Pennsylvania Main Line Canal in and the construction in the s of the Pennsylvania Railroad and the Cambria Iron Works. ByJohnstown's industries had attracted numerous Welsh and German immigrants.

The year after, two small leaks appeared in the dam and the water had to be let out for repairs. The adverse financial impact of these events was followed by the opening of the Pennsylvania Railroad service between Johnstown and Pittsburgh in With rail service able to deliver goods faster, cheaper and more reliably, the canal was doomed.

The State put the whole system up for sale and the railroad purchased it along with the South Fork Dam in The dam suffered a major break on June 10,when the up-stream portion of the stone culvert running under the dam collapsed.

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.

JOHNSTOWN FLOOD A new look at the Historic Johnstown Flood of by WALTER S MOTER FRANK. The article below appeared on pages of CIVIL ENGINEERING (May ) in edited form and has been cited by the National Park Service (US Dept of the Interior).. On May 31,, a wall of rushing water three stories high struck the city of Johnstown Pennsylvania. BEFORE A FLOOD: Have a disaster plan and prepare a disaster supplies kit for your home and car. Include a first aid kit, canned food, can opener, bottled water, battery-operated radio, flashlight, protective clothing and written instructions on how to turn off electricity, gas, and water. November 15, PM Johnstown's Flood of Power Over Truth and the Science Behind the Disaster. Join us for this free book presentation! Neil Coleman, a geologist at the University of Pittsburgh at Johnstown, has written a new book re-examining many of the established assumptions about the flood.

For the next thirteen years the dam stood abandoned. The South Fork Creek past through the remains of the downstream section of the culvert which was still covered with eight feet of the embankment, but from there the gap reached up and out till it was almost feet wide at the top.

Johnstown flood

In the Pennsylvania Railroad sold the damaged dam and acres of surrounding property. The new owner removed the cast iron valves and pipes and sold them for scrap. In the property was sold to a Mr.

Johnstown flood

Benjamin Ruff, who wished to repair the dam and create a summer resort. He would fill in the gap and rebuild the dam to its original height.

When the lake filled, the excess water could be carried off by the existing spill-way. Ruff convinced 15 prominent men from the Pittsburgh area that his enterprise would be one of the finest resorts in the country.November 15, PM Johnstown's Flood of Power Over Truth and the Science Behind the Disaster.

Join us for this free book presentation! Neil Coleman, a geologist at the University of Pittsburgh at Johnstown, has written a new book re-examining many of the established assumptions about the flood. JOHNSTOWN FLOOD A new look at the Historic Johnstown Flood of by WALTER S MOTER FRANK. The article below appeared on pages of CIVIL ENGINEERING (May ) in edited form and has been cited by the National Park Service (US Dept of the Interior)..

On May 31,, a wall of rushing water three stories high struck the city of Johnstown Pennsylvania. Narrated by Richard Dreyfuss and directed by Mark Bussler, Johnstown Flood, tells the story of the massive flood that destroyed the town of Johnstown, PA, on May 31, %.

BEFORE A FLOOD: Have a disaster plan and prepare a disaster supplies kit for your home and car. Include a first aid kit, canned food, can opener, bottled water, battery-operated radio, flashlight, protective clothing and written instructions on how to turn off electricity, gas, and water.

An overview of the tragedy. David McCullough, author of The Johnstown Flood, has endorsed our $ million campaign to refurbish and renovate the Johnstown Flood . Our goal is to develop each player to maximize their ability!

Mike Connolly and Rick Roberts (ERA and Flood City Elite owners) have almost 20 years of professional baseball experience and knowledge to share with our players and parents!

Johnstown Flood of - Historic