Download or read book National Dam Safety Program Lake Welch Dam Inventory Number NY283 Hudson River Basin Rockland County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Welch Dam, formerly known as Beaver Pond Dam is located on the east side of Lake Welch. The maximum height of dam is 32 feet. The dam is 788 feet long and consists of a concrete gravity section (563 feet) and an earth embankment (right of gravity section) with a central concrete core wall (225 feet). The concrete dam, supported on a rock foundation consists of 18 monoliths which are anchored to the rock by 25-ton post-tensioned rock anchors. Examination of the available documents and visual inspection of the Lake Welch Dam did not reveal conditions which constitute a hazard to human life or property. Using the Corps of Engineers screening criteria for review of spillway adequacy, it has been determined that concrete gravity section of the dam would be overtopped for all storms exceeding approximately 12 percent of the Probable Maximum Flood (PMF).
Download or read book Hudson River Basin Lake Welch Dam Rockland County New York Inventory No N Y 283 written by United States. Army. Corps of Engineers. New York District and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1981 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1981 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Safety Program Lake Suzanne Inventory Number N Y 760 Hudson River Basin Rockland County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spillway is about 24 feet wide, ungated and has a sill 2 feet wide and 1.6 feet below the top of the dam. A 16-inch diameter cast iron reservoir drain is located near the left end of the spillway. The examination of documents and the visual inspection of Lake Suzanne did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action. Using the Corps of Engineers screening criteria for review of spillway adequacy, it has been determined that the dam would be overtopped for all storms exceeding approximately 4 percent of the PMF.
Download or read book National Dam Safety Program Congers Lake Dam Inventory Number NY 972 Passaic River Basin Lower Hudson River Area Rockland County New York Phase I Inspection Report written by Granville Kester (Jr) and published by . This book was released on 1981 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and a visual inspection of the dam and appurtenant structures did not reveal conditions which constitute an immediate hazard to human life or property. It has been determined that the dam would be overtopped for all storms exceeding approximately 23 percent of the Probable Maximum Flood (PMF). Therefore, the spillway is adjudged 'seriously inadequate', and the dam is assessed as unsafe, non-emergency. It is recommended that, within three months of owner notification, detailed hydrologic and hydraulic investigations of the structure should be undertaken to more accurately determine the site-specific characteristics of the watershed and their effects upon the overtopping potential of the dam. The results of this investigation and analyses will determine the appropriate remedial measures required to achieve a spillway capacity adequate to discharge the outflow from at least the 1/2 PMF. In the interim, a detailed emergency action plan must be developed and implemented during periods of unusually heavy precipitation. Also, around-the-clock surveillance must be provided during these periods.
Download or read book National Dam Safety Program Tivoli Lake Dam Inventory Number N Y 52 Hudson River Basin Rockland County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: The examination of documents and the visual inspection of Tivoli Lake (Cranberry Lake) did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which require further investigations and remedial actions. Using Corps of Engineers screening criteria for the initial review of spillway adequacy, it has been determined that the dam would be overtopped for all storms exceeding approximately 38 percent of the Probable Maximum Flood (PMF). The spillway is therefore, adjudged as seriously inadequate and the dam is assessed as unsafe, non-emergency. The classification of 'unsafe' applied to a dam because of a seriously inadequate spillway is not meant to connote the same degree of emergency as would be associated with an 'unsafe' classification applied for a structural deficiency. It does mean, however, that based on an initial screening, and preliminary computations, there appears to be a serious deficiency in spillway capacity so that if a severe storm were to occur, overtopping and failure of the dam would take place, significantly increasing the hazard to loss of life downstream from the dam.
Download or read book National Dam Safety Program Lake Adirondack Dam Inventory Number NY 621 Upper Hudson River Basin Hamilton County New York Phase 1 Inspection Report written by and published by . This book was released on 1980 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. Examination of available documents and a visual inspection of the dam did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which need to be evaluated and remedied.
Download or read book National Dam Safety Program Lake De Forest Dam Inventory Number NY 95 Hackensack River Basin Rockland County New York Phase I Inspection Report written by Clark H. Benn and published by . This book was released on 1978 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Lake de Forest Dam is well maintained and operated. Nothing was determined to render the dam unsafe. No remedial measures are necessary. However, to monitor actual behavior, instrumentation in the form of weirs and piezometers should be installed within a reasonable period of time and read and evaluated periodically under the supervision of a licensed professional engineer. (Author).
Download or read book National Dam Safety Program Washington Lake Dam Inventory Number NY 603 Lower Hudson River Basin Orange County New York Phase 1 Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1978 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. Washington Lake Dam was judged to be unsafe-non emergency due to a seriously inadequate spillway. Additional follow-up studies were recommended. (Author).
Download or read book National Dam Safety Program Indian Lake Stone Dam Inventory Number 155 Upper Hudson River Basin Hamilton County New York Phase I Inspection Report written by John B. Stetson and published by . This book was released on 1978 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. Indian Lake Stone Dam was judged to unsafe-non-emergency due to a seriously inadequate spillway. (Author).
Download or read book National Dam Safety Program Garnerville Dam Inventory Number N Y 744 Hudson River Basin Rockland County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. (Author).
Download or read book National Dam Safety Program Helderberg Lake Dam Inventory Number NY276 Lower Hudson River Basin Albany County New York Phase I Inspection Report written by George Koch and published by . This book was released on 1980 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helderberg Lake Dam consists of a 285 foot long earth embankment with concrete cutoff wall and a 55 foot wide concrete channel spillway. The maximum height above the original stream bed is approximately 35 feet. Both the upstream and downstream slopes of the earth embankment are 1 vertical to 2 horizontal, and the crest width is 12 feet. The dam was reconstructed in 1944 after a failure of the original structure in 1938. The spillway crest was increased in length from 35 feet to 55 feet and lowered 2 feet. The original cutoff wall which is founded on bedrock was lengthened and increased in height by 2.25 feet. A 20 in. drain pipe was installed and incorporated into the tunnel that was in the original dam. The examination of documents and visual inspection of Helderberg Lake Dam and appurtenant structures did not reveal conditions which constitute a hazard to human life or property. The discharge capacity of the spillway is inadequate for all storms in excess of 50% of the PMF (Probable Maximum Flood).
Download or read book National Dam Safety Program Lake Casse Dam Inventory Number N Y 1156 Lower Hudson River Basin Putnam County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1981 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. The examination of documents and the visual inspection of Lake Casse Dam did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action.
Download or read book National Dam Safety Program Vly Creek Dam Inventory Number NY 96 Lower Hudson River Basin Albany County New York Phase 1 Inspection Report written by George Koch and published by . This book was released on 1978 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Vly Creek Dam is composed of a 24.5 feet high and 338 feet long earth embankment dam with spillway, and a 39.5 feet high and 1720 feet long earth embankment dike with control tower for water supply regulation. Visual inspection did not reveal conditions that are considered to be unsafe. The total discharge capacity of the spillway is adequate to pass half the Probable Maximum Flood (PMF) regardless of the flashboards. The spillway is also capable of discharging PMF without flashboards, but not with flashboards.
Download or read book National Dam Safety Program Myosotis Lake Dam Inventory Number 670 Hudson River Basin Albany County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1978 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information and analysis on the physical condition of the dam as of the report date. Information and analysis are based on visual inspection of the dam by the performing organization. Myosotis Lake Dam was judged to be unsafe-non-emergency due to a seriously inadequate spillway. (Author).
