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The primary emergency structural improvement to the dam was installation of post-tensioned anchors in the spillway and its foundation. In December 2005, remedial measures began to ensure that the Gilboa Dam satisfied NYSDEC dam safety criteria for the stability fo the gravity section. The stepped spillway is intended to dissipate energy as water overflows the spillway. A stair-stepped overflow structure, also constructed of cyclopean concrete with stone veneer facing, cascades water from the spillway into the side channel. The Dam is abutted on the west by a 160 foot high by 700 foot long Earthfill embankment section consisting of homogenous rolled earthfill with a concrete corewall. Gilboa Dam is a classic NYCDEP gravity dam design, consisting of a 160 foot high by 1,326 foot long spillway, constructed of mass cyclopean concrete with a 3-5 foot thick Ashlar masonry facade of mortared quarried stone on the entire downstream face. Water travels through the Shandaken Tunnel about 15 miles to the Esopus Creek. The average storage capacity of 17.6 billion gallons provides approximately 16 percent of the total water supply for NYC. Portions of it lie in the towns of Conesville and Gilboa in Schoharie County, Roxbury in Delaware County, and Prattsville in Greene County.Ĭonstructed in 1919-1927 and placed into operation in 1927, the Dam has been in service for almost 90 years. Owned by NYC DEP, the Schoharie Reservoir was created by impounding Schoharie Creek. Flash floods, inland flooding, and seasonal storms affect every region of the country, severely damaging homes and businesses. You don’t need to live on the coast to be at risk. Use the MSC to find your official flood map, access a range of other flood hazard products, and take advantage of tools for better understanding flood risk.įloods are the most common natural disaster in the United States. The FEMA Flood Map Service Center is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Is your home in a special flood hazard area? FEMA’s Map Service Center (MSC) can help you determine if it is. SCHOHARIE COUNTY FLOOD DISASTER DECLARATION HISTORY Also known as Special Flood Hazard Area (SFHA).

There is a 26% Chance of Flood Happening in the life of a 30 Year Mortgage.

There is a 1% Chance of Flood Occurring in Any Given Year.

THE 100 YEAR FLOOD – WHAT DOES THAT MEAN?

What is the history of flooding in Schoharie County? Do you know how your property is affected by flooding? What does “100-year Floodplain” really mean? Are streams the only thing that cause flooding? The information on this page will help you identify your risk, and understand what it all means. Schoharie County, New York Official Website Planning and Community Development Services.County Judge, Surrogate and Family Court.County Clerk / Records Management Office.Clerk of the Board, Auditor and Purchasing Agent.

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