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 Hudson River Basin Lake Suzanne Rockland County New York Inventory No N Y 760 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 1981 with total page 204 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 666 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 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 Hudson River Basin Garnerville Dam Rockland County New York Inventory No N Y 744 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 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 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 Hudson River Basin Tivoli Lake Dam Rockland County New York Inventory No N Y 52 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 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 Lower Hudson River Basin Lake Sebago Dam Rockland County New York Inventory No N Y 772 written by United States. Army. Corps of Engineers. New York District and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 Potake Lake Dam Inventory Number N Y 970 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 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Potake Lake Dam is 1 mile southwest of Sloatsburg, New York. The dam and reservoir are used as a water supply source for Sloatsburg, New York. Visual inspection revealed several deficiencies in this structure. The following items were noted: There are three depressions and an animal burrow on the crest of the dam; Trees and brush are growing on the upstream and downstream face of the dam; The spillway discharge channel has trees, boulders, and natural ground which restricts flow over the spillway weir; A 3-foot diameter culvert in the discharge channel has the downstream end higher than the upstream end; There are tire ruts 0.4 foot deep on the crest of the dam; and There is a small amount of spalling and deterioration of the low section of the concrete weir.

Download or read book National Dam Safety Program Churchtown Dam Inventory Number NY 79 Lower Hudson River Basin Columbia County New York Phase I Inspection Report written by George Koch and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visual inspection of this dam and engineering analyses which have been performed revealed that several serious deficiencies exist with this structure. Structural stability analyses, based on available information, indicate that this dam is marginally stable under normal loading conditions and is unstable when subjected to severe loading conditions (such as flood flows or ice loading). Seepage noted under and through the structure, creating wet, soft areas along the downstream toe along both ends of the dam, adversely affect the stability of the structure. Immediately upon receipt of this notification, a system for providing around-the-clock surveillance of the dam during periods of unusually heavy precipitation should be developed and implemented. An emergency action plan for the notification of downstream residents should also be developed. It is recommended that within 3 months of the data of notification of the owner, investigations into the deficiencies on this structure should be commenced. Studies of the structural stability and seepage problems, including subsurface and structural explorations are necessary. Information obtained should be incorporated into a detailed stability evaluation.