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National Dam Safety Program Conewango Creek Watershed Dam Number 9a Inventory Number Ny 596 Allegheny River Basin Chautauqua County New York Phase I Inspection Report
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Book Synopsis National Dam Safety Program. Conewango Creek Watershed Dam Number 9A (Inventory Number N.Y. 596), Allegheny River Basin, Chautauqua County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Conewango Creek Watershed Dam Number 9A (Inventory Number N.Y. 596), Allegheny River Basin, Chautauqua County, New York. Phase I Inspection Report written by Robert J. Farrell and published by . This book was released on 1981 with total page 151 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 and property. However, the dam has some deficiencies which require further investigation and remedial action.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Dam Safety Program. Conewango Creek Watershed Project Site 33 (Inventory Number NY 581), Allegheny River Basin, Chautauqua County, New York, Phase 1 Inspection Report by :
Download or read book National Dam Safety Program. Conewango Creek Watershed Project Site 33 (Inventory Number NY 581), Allegheny River Basin, Chautauqua County, New York, Phase 1 Inspection Report written by and published by . This book was released on 1980 with total page 173 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 available engineering documents and visual inspection of the Conewango Creek Watershed Project - Site 33 dam did not disclose conditions which constitute a hazard to downstream human life or property. The total discharge capacity of the combined principal and auxiliary spillways is adequate to impound and safely discharge the floodwater resulting from the Probable Maximum Flood (PMF). A number of minor deficiencies were noted on this structure. These deficiencies include: debris around the trash racks of the orifice in the riser intake structure, debris (logs) on the lower half of the upstream slope as measured from the crest to the normal pool elevation, slight erosion along abutment- embankment contacts on lower third of downstream slope, damaged internal drainage pipes above plunge pool, small animal burrow on downstream slope just above riprap around the principal spillway outlet pipe, wet areas beyond downstream toe in waste area along east side of outlet channel and natural flood plain on the west side of the outlet channel.
Book Synopsis National Dam Safety Program. Conewango Creek Dam (Site 16A), (Inventory Number N.Y. 557), Allegheny River Basin, Conewango Creek Watershed, Cattaraugus County, New York. Phase I Inspection Report by :
Download or read book National Dam Safety Program. Conewango Creek Dam (Site 16A), (Inventory Number N.Y. 557), Allegheny River Basin, Conewango Creek Watershed, Cattaraugus County, New York. Phase I Inspection Report written by and published by . This book was released on 1981 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and visual inspection of the Conewango Creek Watershed Conewango Creek Dam (Site 16A) and appurtenant structures did not reveal conditions which constitute a hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action. Significant erosion was observed on the upstream slope of the embankment. In addition, springs were observed on the west slope of the west emergency spillway, and a ponded water condition was observed at the upstream end of the east emergency spillway. It is recommended that each of these conditions be further evaluated by a qualified registered professional engineer. 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 62 percent of the spillway outflow capacity. The spillway is therefore judged to be adequate. (Author).
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1982 with total page 1468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Dam Safety Program. Conewango Creek Watershed Project Site 19 (Inventory Number NY 579). Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report by : George Koch
Download or read book National Dam Safety Program. Conewango Creek Watershed Project Site 19 (Inventory Number NY 579). Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report written by George Koch and published by . This book was released on 1979 with total page 115 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 visual inspection of the Site 19 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 if not remedied, have the potential for developing into hazardous conditions. These problem areas are as follows: 1. Seepage encountered at the toe of the downstream slope near the left (north) abutment contact; 2. Erosion at the left abutment contact of the downstream face caused by runoff from the very steep abutment slope; 3. Incomplete structural stability investigations which did not include seismic and the observed seepage forces.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1982 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis National Dam Safety Program. Davis Brook Dam (Site 1) (Inventory Number N.Y. 564), Allegheny River Basin, Conewango Creek Watershed, Cattaraugus County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Davis Brook Dam (Site 1) (Inventory Number N.Y. 564), Allegheny River Basin, Conewango Creek Watershed, Cattaraugus County, New York. Phase I Inspection Report written by Robert J. Farrell 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 visual inspection of Conewango Creek Watershed Davis Brook Dam (Site 1) and appurtenant structures did not reveal conditions which constitute a hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action. A wet condition of unknown cause was observed on the lower portion of the left downstream slope. It is recommended that the services of a qualified registered professional engineer be retained to evaluate this condition. 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 46 percent of the spillway outflow capacity. The spillway capacity is therefore judged as adequate. The following remedial measures should be performed within 1 year of notification to owner: develop a formal downstream warning system; develop and maintain a program of periodic technical inspections; implement a program of diligent and periodic maintenance; remove trees and brush from slopes; regrade and fill in the erosion gullies; and install ladder rungs on the riser.
Book Synopsis National Dam Safety Program. Elm Creek Dam (Dam Number 16), (Inventory Number N.Y. 593), Conewango Creek Watershed, Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Elm Creek Dam (Dam Number 16), (Inventory Number N.Y. 593), Conewango Creek Watershed, Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report written by Robert J. Farrell and published by . This book was released on 1981 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and visual inspection of the Conewango Creek Watershed Elm Creek Dam (Dam No. 16) and appurtenant structures did not reveal conditions which constitute a hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action. Sloughing of the south slope of the emergency spillway and the north upstream abutment contact was observed. In addition, significant erosion was observed on the upstream slope of the embankment. It is recommended that these conditions be evaluated further by a qualified registered professional engineer. 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 55 percent of the spillway outflow capacity. The spillway capacity is, therefore, judged to be adequate. The investigation recommended should be completed within 12 months of notification to owner, and remedial actions resulting from these investigations completed in the subsequent 12 months.
Book Synopsis National Dam Safety Program. Warner Dam, Chautauqua Lake Outlet (Inventory Number NY 750) Allegheny River Basin, Chautauqua County, New York. Phase I Inspection Report by : Bent L. Thomsen
Download or read book National Dam Safety Program. Warner Dam, Chautauqua Lake Outlet (Inventory Number NY 750) Allegheny River Basin, Chautauqua County, New York. Phase I Inspection Report written by Bent L. Thomsen and published by . This book was released on 1980 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 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 75 percent of the PMF. The spillway is, therefore, considered to be 'inadequate'. A review of the structural stability analysis performed by the designer indicated calculated safety factors against sliding to be less than recommended minimum value. A more detailed analysis which was performed as a part of this Phase I investigation produces a similar conclusion. Therefore, it is recommended that within 6 months of notification to the owner a detailed field investigation and monitoring program be undertaken to determine the actual hydrostatic uplift pressures along the base of the dam and that further detailed structural stability analyses be performed using this information. Debris should be removed from the upstream face of the dam as part of the routine maintenance program. Finally, leakage along the south side of the south tainter gate should be monitored on a daily basis with these observations documented in the dam operator's log book.
Book Synopsis National Dam Safety Program. Ischua Creek Watershed Dam Number 2 (Inventory Number N.Y. 560), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Ischua Creek Watershed Dam Number 2 (Inventory Number N.Y. 560), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report written by Robert J. Farrell and published by . This book was released on 1981 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of available documents and visual inspection of Ischua Creek Watershed Dam No. 2 and appurtenant structures did not reveal conditions which constitute a hazard to human life or property. However, the dam has some deficiencies which require further investigation and remedial action. Drainage gullies were observed across the emergency spillway and emanating from the downstream east toe of the embankment. In addition, a bulge or slough was observed in the upper portion of the downstream east slope. It is recommended that these conditions be evaluated further by a qualified registered professional engineer. 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 97 percent of the spillway outflow capacity. The spillway is, therefore, judged to be adequate. The investigations recommended should be completed within 12 months of notification to owner, and remedial actions resulting from these investigations completed in the subsequent 12 months.
Book Synopsis National Dam Safety Program. Ischua Creek Watershed Dam Number 5 (Inventory Number N.Y. 565), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Ischua Creek Watershed Dam Number 5 (Inventory Number N.Y. 565), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report written by Robert J. Farrell and published by . This book was released on 1981 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is located on a tributary of Gates Creek in the Town of Lyndon, 3.5 miles southeast of Franklinville, New York. The purpose of this dam is to reduce downstream flooding by providing temporary storage for the runoff from 4,096 acres. The temporary storage is released gradually through the two-stage principal spillway system. The dam is generally in good condition. The potential problems noted during the visual inspection are listed below: Drainage gullies on the main dam and upstream of the emergency spillway; Ponded water in the emergency spillway channel and the berm on the downstream slope; Erosion of the downstream channel banks above the level of the rip rap; Sloughing of the upstream slope to the left of the intake structure; Operation of the drain gate could not be checked due to its location below the water surface, and The inaccessibility of the drain gate.
Book Synopsis National Dam Safety Program. Ischua Creek Watershed Dam Number 1 (Inventory Number N.Y. 583), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report by : Robert J. Farrell
Download or read book National Dam Safety Program. Ischua Creek Watershed Dam Number 1 (Inventory Number N.Y. 583), Allegheny River Basin, Cattaraugus County, New York. Phase I Inspection Report written by Robert J. Farrell and published by . This book was released on 1981 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam consists of a zoned earthfill embankment with an earthfill cutoff trench below; a principal spillway with a reinforced concrete riser structure and outlet pipe; and two vegetated earth channel emergency spillways located to the north and south of the dam embankment. The length of the dam embankment is approximately 490 ft. The length of the dike is approximately 1300 ft. The two emergency spillways total 500 ft. in weir length. 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 98 percent of the spillway outflow capacity. The spillway capacity is, therefore, judged as adequate.
Book Synopsis National Dam Safety Program. Panama Dam (Inventory Number NY 784) Allegheny River Basin Chautauqua County. Phase I Inspection Report by : George Koch
Download or read book National Dam Safety Program. Panama Dam (Inventory Number NY 784) Allegheny River Basin Chautauqua County. Phase I Inspection Report written by George Koch and published by . This book was released on 1980 with total page 73 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 Panama Dam did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which require additional studies to further evaluate conditions affecting the dam. 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 5% of the PMF (Probable Maximum Flood). This determination has been confirmed by the overtopping of the dam during the September 14, 1979 storm, which resulted in the need for evacuation of Panama Village residents and the closing of NYS Route 474 due to extensive erosion. 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.
Book Synopsis National Dam Safety Program. Nanticoke Creek Watershed Project-Floodwater Retarding Dam Site 9-C (Inventory Number N.Y. 628), Susquehanna River Basin, Broome County, New York. Phase I Inspection Report by : Lawrence D. Andersen
Download or read book National Dam Safety Program. Nanticoke Creek Watershed Project-Floodwater Retarding Dam Site 9-C (Inventory Number N.Y. 628), Susquehanna River Basin, Broome County, New York. Phase I Inspection Report written by Lawrence D. Andersen and published by . This book was released on 1981 with total page 81 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. Based on the evaluation of the existing conditions, the condition of the Nanticoke Creek Watershed Project - Floodwater Retarding Dam Site 9-C is considered to be good. The examination of documents and visual observations did not reveal conditions which consitute a hazard to human life or property. The spillway capacity was evaluated according to the recommended procedure and was found to pass the required spillway design flood of 100 percent of the Probable Maximum Flood (PMF). Therefore, the spillway capacity is rated to be adequate. (Author).
Book Synopsis National Dam Safety Program. Nanticoke Creek Watershed Project Site 10 Dam (Inventory I.D. Number NY 713, DEC 85D-3946, Susquehanna River Basin, Broome County, New York, Phase I Inspection Report by : George Koch
Download or read book National Dam Safety Program. Nanticoke Creek Watershed Project Site 10 Dam (Inventory I.D. Number NY 713, DEC 85D-3946, Susquehanna River Basin, Broome County, New York, Phase I Inspection Report written by George Koch and published by . This book was released on 1980 with total page 105 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 visual inspection of the Site 10 dam and appurtent structures did not reveal conditions which constitute a hazard to human life or property. (Author).
Book Synopsis National Dam Safety Program. Nanticoke Creek Watershed Project-Floodwater Retarding Dam Site 7-B (Inventory Number N.Y. 605), Susquehanna River Basin, Tioga County, New York. Phase I Inspection Report by : Lawrence D. Andersen
Download or read book National Dam Safety Program. Nanticoke Creek Watershed Project-Floodwater Retarding Dam Site 7-B (Inventory Number N.Y. 605), Susquehanna River Basin, Tioga County, New York. Phase I Inspection Report written by Lawrence D. Andersen and published by . This book was released on 1981 with total page 80 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. Based on the evaluation of the existing conditions, the condition of the Nanticoke Creek Watershed Project-Floodwater Retarding Dam Site 7-B is considered to be good. The examination of documents and visual observations did not reveal conditions which constitute a hazard to human life or property. The spillway capacity was evaluated according to the recommended procedure and was found to pass the required spillway design flood of 100 percent of the Probable Maximum Flood (PMF). Therefore, the spillway capacity is rated as adequate. (Author).
