Download or read book National Dam Safety Program Wappingers Falls Dam I D Number N Y 3 D E C 613A Hudson River Basin Dutchess County New York Phase 1 Inspection Report written by and published by . This book was released on 1980 with total page 107 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 Wappingers Falls Dam 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. It is recommended that within 3 months of notification to the owner, a detailed hydrological and hydraulic investigations be undertaken to more accurately determine the site specific characteristics of the watershed and their affect upon the overtopping potential of the dam. At the same time structural stability analysis of the dam should be performed. Within twelve (12) months of the date of notification to the owner, any modification to the structure deemed necessary as a result of investigations, to achieve a spillway capacity adequate to discharge the outflow from at least one-half PMF should have been completed. In the interim, a detailed emergency operation plan and warning system should be promptly developed. Also, during periods of unusually heavy precipitation, around-the-clock surveillance should be provided. In addition, the dam has a number of problem areas which, if left uncorrected, have the potential for the development of hazardous conditions and must be corrected within twelve (12) months.
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 1981-03 with total page 978 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 National Dam Safety Program Mt Beacon Reservoir Inventory Number NY 26 Hudson River Basin Dutchess County New York Phase I Inspection Report written by and published by . This book was released on 1980 with total page 136 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.
Download or read book National Dam Safety Program Melzingah Reservoir Dam Inventory Number NY 032 Lower Hudson River Basin Dutchess County New York Phase I Inspection Report written by Granville Kester (Jr) and published by . This book was released on 1981 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Melzingah Reservoir Dam on Gordons Brook, a tributary of the Hudson River, is 2 miles south of Beacon, New York. Melzingah Reservoir is one of three reservoirs used as a water supply for the City of Beacon, New York. Visual inspection revealed several deficiencies in this structure. The following items were noted: There are two large seeps at the base of the spillway; Water was flowing (3-5 gpm) from beneath the spillway; Five minor seeps were found 3 to 7 feet above the toe of the dam between the spillway and left abutment; Trees and brush are growing along the toe of the dam; There are small trees growing in the discharge channel; The gunite surface of the dam is deteriorating and is cracked over the entire upstream and downstream faces; An irregularity or 'bump' in the gunite surface was observed on the downstream face of the dam, approximately 200 feet from the left abutment; The junction of the 24-inch pipe and the 12-inch water supply line is leaking, and A construction joint has deteriorated on the upstream crest of the dam approximately 75 feet from the left abutment, creating a void approximately 4 inches deep, 2 feet long, and 2 feet wide.
Download or read book National Dam Safety Program Windover Dam I D Number NY 150 DEC Number 186 1322 Upper Hudson River Basin Warren County New York Phase I Inspection Report written by George Koch and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Windover dam consists of 2 earth embankments abutting a 140 feet long concrete capped masonry spillway, the maximum height of which is 15 feet. The left embankment is 75 feet long and the right embankment is 125 feet long. The crest width is 5 feet. The upstream slope is 1 vertical on 3 horizontal and the downstream slope is 1 and 2. A reservoir drain is located near the left end of the spillway. The examination of documents and the visual inspection of Windover 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. Using the Corps of Engineers 'screening criteria' for the initial review of spillway adequacy, it has been determined that the embankment would be overtopped for all storms in excess of 37% of the PMF (Probable Maximum Flood). The spillway is, therefore, adjudged as 'seriously inadequate' and the dam is assessed as unsafe, non-emergency.
Download or read book National Dam Safety Program Lock 2 Dam at Mechanicville I D Number NY 988 Upper Hudson River Basin Rensselaer Saratoga County New York Phase I Inspection Report written by George Koch and published by . This book was released on 1980 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and a visual inspection of the dam revealed several deficiencies which may affect the safety of the dam. There was serious leakage in the vicinity of one of the gates in the gatehouse section. The auxiliary spillway section had failed allowing a portion of the river to flow around the left end of the dam. In addition to these observed deficiencies, structural stability analyses performed for the main spillway section indicate that the structure is unstable when subjected to severe loading conditions such as ice loading or flood flows. Further analysis is required. These studies should include subsurface and structural investigations to obtain information about the condition of the structure and its foundation. This information should then be incorporated into a more detailed stability analysis. The spillway, not having sufficient discharge capacity for passing one-half the Probable Maximum Flood (PMF), is considered to be inadequate. For such a large storm event, a high tailwater condition would occur, resulting in the flooding of downstream hazard areas. Hence, dam failure from overtopping would not significantly increase the hazard to loss of life from that which would exist just before failure. Several other deficiencies were also noted on this structure. Among these were deteriorated concrete on the main spillway section, erosion at the east abutment, and minor sloughing at the west abutment. In addition, no emergency action plan exists for this structure.
Download or read book National Dam Safety Program Morgan Lake Dam Inventory Number NY 787 Hudson River Basin Dutchess County New York Phase I Inspection Reprot written by Eugene O'Brien and published by . This book was released on 1980 with total page 98 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.
Download or read book National Dam Safety Program Glenham Dam Inventory Number N Y 72 Lower Hudson River Basin Dutchess County New York Phase I Inspection Report written by Granville Kester (Jr) and published by . This book was released on 1981 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and visual inspection of the dam and appurtenant structures did not reveal any conditions which constitute an immediate hazard to human life or property. Using the Corps of engineers' screening criteria, it has been determined that the dam would be overtopped for all storms exceeding 33 percent of the Probable Maximum Flood (PMF). Therefore, the spillway is adjudged as 'seriously inadequate' and the dam is assessed as 'unsafe, non-emergency.' Structural stability analyses based on available information, indicate that factors of safety against overturning are generally low, and the locations of the resultants fall outside of the middle 1/3. The factor of safety against sliding was less than the recommended value of 3 for Cases 3 and 4. Therefore, when the dam is subjected to severe loading conditions such as a 1/2 PMF of PMF event, the factors of safety fall to below critical levels.
Download or read book Alustusten ponnet keskustelukysymyksiin 6 nnessa yleisess opettajakokouksessa Helsingiss 7 9 p kes k 1920 written by and published by . This book was released on 1920 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Safety Program Clarks Mills Dam Inventory Number NY 120 Upper Hudson River Basin Washington County New York Phase I Inspection Report written by John B. Stetson and published by . This book was released on 1980 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: The examination of documents and visual inspection of the dam and appurtenant structures did not reveal conditions which constitute an immediate hazard to human life or property. The dam, however, has a number of problem areas which should be investigated, evaluated, and remedied. The following remedial measures should be undertaken within one year: (1) Eliminate leakage into the interior core of the dam and repair deteriorated concrete on the north abutment and at the pier separating the two sections of the dam; (2) A formalized inspection program should be initiated to develop data on conditions and maintenance operations at the facility; and (3) A flood warning and emergency evacuation plan should be developed and implemented to alert the public in the event conditions occur which could result in failure of the dam.
Download or read book National Dam Safety Program Lake Mahopac Dam Inventory Number NY 1329 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 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The examination of documents and the visual inspection of Lake Mahopac Dam and its appurtenant structures did not reveal conditions which constitute an immediate hazard to human life and property. Using Corps of Engineers screening criteria, it has been determined that the dam would be overtopped for all storms exceeding approximately 56 percent of Probable Maximum Flood (PMF). The maximum spillway discharge capacity is 7.9 percent of the PMF peak outflow. The spillway is, therefore, adjudged as 'inadequate'. The following remedial measures should be performed within 12 months from notification: (1) Missing portions of the upstream stone masonry wall should be repaired. (2) Brush and shrubbery should be removed from the embankment, spillway-reservoir drain structure and downstream channel. Provide a program of periodic cutting and or mowing of the dam surfaces, spillway-reservoir drain structure and the downstream channel. (3) The collected debris at the spillway-reservoir drain structure and in the downstream channel should be removed and hauled away from the dam. (4) A program of periodic inspections and maintenance of the dam and appurtenances should be provided, including yearly operation and lubrication of the reservoir drain and its control facilities. This information should be documented for future reference. (5) An emergency action plan for the project should be developed.
Download or read book National Dam Safety Program Feeder Dam at Glens Falls Inventory Number NY 143 Upper Hudson River Basin Warren Saratoga County New York Phase 1 Inspection Report written by and published by . This book was released on 1979 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Feeder Dam at Glens Falls is a concrete gravity dam having a 615 foot long ungated river spillway section with flashboards including a 20 foot wide inclined logway. 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, significant deficiencies and deterioration was observed at one portion of the dam, the North Bulkhead, so as to warrant additional study and analysis as well as corrective action by maintenance forces. The spillway capacity of the dam, although not having sufficient discharge capacity for passing one-half the Probable Maximum Flood (PMF), is considered to be inadequate. Other deficiencies found during the visual inspection concerned concrete surface deterioration and cracking, non-operable or non-existent gate machinery, and an overall need for increased maintenance of the dam.
Download or read book National Dam Safety Program Harlem Valley Reservoir Inventory Number N Y 273 Housatonic River Basin Dutchess County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 140 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 the available documents and visual inspection of the Harlem Valley Reservoir Dam did not reveal conditions which constitute a hazard to human life or property. (Author).
Download or read book National Dam Safety Program Honk Falls Dam Inventory Number N Y 73 Lower Hudson River Basin Ulster County New York Phase I Inspection Report written by Granville Kester (Jr) and published by . This book was released on 1981 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honk Falls Dam is located on Rondout Creek, a tributary of the Hudson River, 3 miles north of Ellenville, New York. Honk Lake is used for recreation. Visual inspection revealed several deficiencies in the structure. The following items were noted: The right wing wall has seepage at the soil-concrete contact along most of its length; The wooden gates on the 6-foot diameter outlet pipes have water running down their face; The mechanical equipment for the lift gates is inoperative; The lift arm for the left gate on the 6-foot diameter outlet pipe is missing; The left wingwall has seepage at the junction with the main structure of the dam; There is seepage through the dam on the downstream face below the auxiliary spillways; The junction of the concrete and rock at the toe of the dam is eroded; The construction joints in the dam are badly eroded; and The entire concrete surface of the dam is spalled and deteriorated.
Download or read book National Dam Safety Program Fresh Air Fund Dam Number 2 Inventory Number NY726 Hudson River Basin Dutchess County New York Phase I Inspection Report written by Eugene O'Brien and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fresh Air Fund Dam No. 2 is an earth embankment approximately 1100 feet long, with a maximum height of about 47 feet and a crest width of 17 feet. The grassed downstream slope varies from approximately IV:2.5H to 1V:3.0H. A 36-inch diameter reinforced concrete pipe located near the left abutment serves as the principal spillway for the dam. An excavated auxiliary spillway channel is located at the right abutment. A 12-inch diameter corrugated steel reservoir drain is located at the approximate center of the dam. Discharge is controlled by a manually operated center rising screw-type valve, which is supported by a concrete platform approximately 10 feet from the upstream crest edge. Examination of available documents and visual inspection of the Fresh Air Fund Dam No. 2 and appurtenant structures 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 the dam would not be overtopped under full PMF conditions. The PMF routed through the reservoir required only 41 percent of the spillway outflow capacity. The spillway capacity is therefore adjudged as adequate.
