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Introduction

• Johnstown Flood was also known as the Great Flood of 1889. And caused lots of damage. A lot of people lost their houses and there loved ones. And this is about the dam in Johnstown that broke and caused this much damage.

HOW IT ALL BEGAN!

• In the morning on May 31,1889 something big was just beginning.
• After the Castastrphic Failure of the South Fork Dam on the Little Conemaugh River 14 miles (23km.) upstream of the town of Johnstown, Pennsylavania.
• The dam broke after several days of exterimly heavy rainfall ,unleashing 20 million tons of water (18 million cubic meters) from the reservoir known as Lake Conemaugk.
• Also some of these floods were caused when heavy snows melted too quickly in the spring.

With flow rate that temporarily equalled that of the Mississippi River. The flood killed 2,209 people and caused in 2012 U.S.$17 million of damage about $425 million dollars.

STRUCTURE

• Johnstown was built into a river valley on the Appalachian Plateau.
• The Little Conemaugh and the Stony creek Rivers witch ran along Peripheral of the town and merged to form the Conemaugh River at the western end, drained a 657 square mile watershed.
• Witch dropped in the rivers from mountains 500 feet above.

A LITTLE IMFORMATION

• At least once a year, one or both of the rivers overflowed into streets sending the towns residents into a scury to protect what they could of their homes and belongings.
• 99 entire families died, including 396 children.
• 1,600 homes were destroyed.

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However, floods were a fact of life to the nineteenth century resident of this industrial community in southwestern Pennsylavania.

This is a description from six-year-old Gertrude Quinn was one of those in the flood wave. Years later she would write about her experience as she describes as a "raft with wet muddy mattress and beding".

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