Download or read book Phase I Inspection Report for Silver Lake Dam written by California. Department of Water Resources. Division of Safety of Dams and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silver Lake Dam VT00196 written by United States. Army. Corps of Engineers. New England Division 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 Phase I Inspection Report for Silver Lake Flat Dam Utah County Utah written by Utah. Division of Water Rights 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 Silver Lake Dam Barnard Vermont written by United States. Army. Corps of Engineers. New England Division and published by . This book was released on 1980 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Dam Inspection Program Silver Lake Dam NDI ID PA 00791 PA DER 9 78 Delaware River Basin Van Horn Creek Pennsylvania Phase I Inspection Report written by Peter C. Johnson and published by . This book was released on 1981 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silver Lake Dam is an earth embankment about 350 feet long and 15 feet high at its maximum section. An ungated overflow masonry spillway is located at the approximate midpoint of the embankment. Silver Lake Dam has a maximum storage capacity of 51 acre feet and a maximum height of 15 feet. The dam is therefore classified as 'Small' size structure. Because of the potential for the possible loss of a few lives and appreciable property losses in the damage area, located about 0.6 miles downstream, the dam is considered to be a 'Significant' hazard structure. The selected Spillway Design Flood (SDF) for Silver Lake Dam ('Small' size, 'Significant' hazard) is the one hundred year storm. An examination of the hydrologic and hydraulic analyses indicates that the spillway is not capable of passing the SDF without the dam being overtopped. The spillway is classified as 'Inadequate'. Based on visual observations and a review of the information obtained from the Pennsylvania Department of Environmental Resources, Silver Lake Dam appears to be in fair condition.

Download or read book Silver Lake Dam Bucksport Maine written by United States. Army. Corps of Engineers. New England Division and published by . This book was released on 1978 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Program for Inspection of Non Federal Dams Silver Lake Dam MA 00066 Connecticut River Basin Springfield Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silver Lake Dam is an earthfill embankment about 85 feet long, 12 feet high with a crest width averaging about 30 feet. The project appears to be in fair condition. Since the dam is classified as small in size, with a significant hazard potential, the test flood is one half the PMF. (Author).

Download or read book National Dam Safety Program Silver Lake Dam Inventory Number VA 16508 Potomac River Basin Rockingham County Virginia Phase I Inspection Report written by Ray E. Martin and published by . This book was released on 1980 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pursuant to Public Law 92-367, Phase I Inspection Reports are prepared under guidance contained in the Recommended Guidelines for Safety Inspection of Dams, published by the Office of Chief of Engineers, Washington, D.C. 20314. The purpose of a Phase I investigation is to identify expeditiously those dams which may pose hazards to human life or property. The assessment of the general conditions of the dam is based upon available data and visual inspections. Detailed investigation and analyses involving topographic mapping, subsurface investigations, testing, and detailed computational evaluations are beyond the scope of a Phase I investigation; however, the investigation is intended to identify any need for such studies. Based upon the field conditions at the time of the field inspection and all available engineering data, the Phase I report addresses the hydraulic, hydrologic, geologic, geotechnic, and structural aspects of the dam. The engineering techniques employed give a reasonably accurate assessment of the conditions of the dam. It should be realized that certain engineering aspects cannot be fully analyzed during a Phase I inspection. Assessment and remedial measures in the report include the requirements of additional indepth study when necessary. Phase I reports include project information of the dam and appurtenances, all existing engineering data, operational procedures, hydraulic/hydrologic data of the watershed, dam stability, visual inspection report and an assessment including required remedial measures. (Author).

Download or read book National Program for Inspection of Non Federal Dams Silver Lake Dam NH 00062 NHWRB Number 109 01 Connecticut River Basin Harrisville New Hampshire Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is an 80 ft. long, 12 ft. high dam consisting of stone, earth and concrete. The visual inspection did not disclose any findings that indicate an immediate unsafe condition. The general condition of the dam is good. The dam's spillway will not pass the required test flood. The wet area found at the toe downstream should be examined when there is no flow through the spillway to determine if it is resulting from seepage through the dam or from water through the rock slope from the spillway. (Author).

Download or read book National Program for Inspection of Non Federal Dams Silver Lake Dam CT 00254 Connecticut River Basin Berlin Connecticut Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1979 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 140 foot long dam is an earth embankment, the top of which, at elevation 154.5, is approximately 15 feet above the streambed of Belcher Brook. A drop inlet at a flow line elevation about 4.5 feet below the top of the dam, is the spillway facility. A wooden gate extending the full 7.5 foot depth of the structure is the low level outlet, however it is apparently stuck in a closed position. The inlet structure feeds an arched brick culvert which has an estimated chord length of 7 feet and an effective depth of approximately 3 feet, due to heavy siltation. A recent partial collapse of the brick culvert where it abuts the downstream low-level outlet headwall caused partial blockage of the culvert as well as an approximately six foot wide cavity and sloughing to the crest of the dam on the downstream slope. Based on the visual inspection at the site and past performance, the dam is judged to be in very poor condition. Evidence of instability was noted in the form of a collapse of the outlet conduit and a subsequent failure of the downstream slope of the dam. There are other areas requiring attention as well. Based upon the hydraulics computations, the spillway capacity is 180 cfs to the top of the dam, which is equivalent to 72% of the routed test flood outflow.

Download or read book Silver Lake Reservoir Richmond County New York Inventory No 60 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 Program for Inspection of Non Federal Dams North Silver Lake Dam MA 00307 Connecticut River Basin Sandisfield Massachusetts Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1980 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: North Silver Dam is about 1550 feet long with a maximum height of 76 feet. The dam has a chimney drain and a rock toe for internal drainage. The dam has been classified as intermediate in size with a high hazard potential. The dam is considered to be in fair condition. A major breach of the dam could cause appreciable damage to roads, bridges and residences in the downstream area.

Download or read book National Dam Safety Program Silver Lake Dam DE00041 Mispillon River Basin Mispillion River Kent County Delaware Phase 1 Inspection Report written by John J. Williams and published by . This book was released on 1978 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report cites results of a technical investigation as to the dam's adequacy. The inspection and evaluation of the dam is as prescribed by the National Dam Inspection Act, Public Law 92-367. The technical investigation includes visual inspection, review of available design and construction records, and preliminary structural and hydraulic and hydrologic calculations, as applicable. An assessment of the dam's general condition is included in the report. (Author).

Download or read book National Program for Inspection of Non Federal Dams Silver Lake Dam ME 00147 Penobscot River Basin Bucksport Maine Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1978 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concrete gravity and earth dam is about 29 ft. high and about 470 ft. long. The lake is used to supply industrial water to Saint Regis Paper Co. and domestic water supply to the town of Bucksport. The dam is in fair condition. It is intermediate in size with a high hazard classification. Round the clock surveillance should be provided during periods of high precipitation.

Download or read book National Dam Safety Program Silver Lake Dam DE00031 Delaware River Basin St Jones River Kent County Dover Delaware Phase I Inspection Report written by Frank W. Vinci and published by . This book was released on 1978 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report cites results of a technical investigation as to the dam's adequacy. The inspection and evaluation of the dam is as prescribed by the National Dam Inspection Act, Public Law 92-367. The technical investigation includes visual inspection, review of available design and construction records and preliminary structural and hydraulic and hydrologic calculations, as applicable. An assessment of the dam's general condition is included in the report. (Author).

Download or read book National Program for Inspection of Non Federal Dams Silver Lake Dam VT 00065 Connecticut River Basin Barnard Vermont Phase I Inspection Report written by CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV. and published by . This book was released on 1980 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is an earth embankment about 100 ft. long and 27 ft. high. The dam is judged to be in fair condition. Reportedly, the low level output pipe is defective and has not been repaired. It is intermediate in size with a high hazard potential. The test flood is equal to the PMF. There are various remedial measures and recommendations which should be implemented by the owner. (Author).

Download or read book National Dam Safety Program Silver Lake Dam NJ00469 Wallkill River Basin Tributary to Franklin Pond Creek Sussex County New Jersey Phase I Inspection Report written by Richard McDermott and published by . This book was released on 1981 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on visual inspection, past operational performance and Phase I engineering analyses, Silver Lake Dam is assessed as being in good overall condition. Based on investigations of the downstream flood plain made in connection with this report, it is recommended that the hazard potential classification be downgraded from high to low hazard. Hydraulic and hydrologic analyses indicate that the spillway is inadequate. Discharge from the spillway is not sufficient to pass the designated spillway design flood (100-year storm) without an overtopping of the dam. The spillway is capable of passing approximately 4 percent of the SDF. However, because of the low hazard classification, no further studies or increase of spillway capacity are recommended. The observed seepage at the left side of the dam at the toe of slope should be monitored on a periodic basis by a professional engineer experienced in the design and construction dams in order to detect any changes in volume or condition.