Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 368 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 199? with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Lake Stoneycreek Dam NDI ID Number 227 Ohio River Basin Rhoads Creek Somerset County Pennsylvania Phase I Inspection Report written by D'APPOLONIA CONSULTING ENGINEERS PITTSBURGH PA. and published by . This book was released on 1978 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Stoneycreek Dam consists of an earth embankment 900 feet long, with a maximum height of 31 feet from the downstream toe. The dam has a concrete lined primary spillway over the embankment near the left abutment (looking downstream) and an earth channel emergency spillway around the right abutment. Based on evaluation of the conditions as they existed on the dates of inspection (May 18 and 30, 1978), as revealed by the visual observations, and the review of available information, the condition of Lake Stoneycreek is considered to be fair. Although the primary and emergency spillways of the dam have sufficient cross-sectional area to pass the recommended spillway design discharge (probable maximum flood) without overtopping, the emergency spillway crest lacks erosion protection and has no well-defined discharge channel. Therefore, flow over this spillway will constitute a threat to the integrity of the earth embankment. It is recommended that the owner should take appropriate action as soon as possible to provide adequate erosion protection in the emergency spillway, evaluate the adequacy of the riprap at the entrance of the primary spillway, and remove brush on the upstream face of the dam. It is also recommended that the owner should evaluate the need for placing an upstream control at the outlet pipe and installing instrumentation in the embankment.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979-05 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1979 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Lake Somerset Dam NDS I D Number PA 00229 PennDer I D Number 56 89 Ohio River Basin East Branch of Coxes Creek Somerset County Pennsylvania Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, operational history, and available engineering data, the dam, despite being well maintained, is considered to be in poor condition. Observations made during the visual inspection suggest that the embankment may be structurally unsafe as extensive areas of seepage were noted on the downstream embankment slope and immediately below the toe area to the right of the outlet conduit. Seepage conditions became evident shortly after reservoir filling and have persisted in spite of the installation of a remedial sand drain system near the toe. Failure of the embankment does not appear imminent and the condition is presently considered non-emergency. It is recommended that the owner immediately develop and implement a warning system to notify downstream inhabitants should hazardous conditions develop. Included in the plan should be provisions for around-the-clock surveillance of the facility during periods of unusually heavy precipitation.
Download or read book National Dam Inspection Program Indian Lake Dam NDI ID Number 228 Ohio River Basin Calendars Run Somerset County Pennsylvania Phase I Inspection Report written by D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA. and published by . This book was released on 1978 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the evaluation of the conditions as they existed on the dates of inspection (May 17 and 30, 1978), as revealed by the visual observations, and the review of available information, the condition of Indian Lake Dam is assessed to require immediate further investigation to determine its structural stability and appropriate measures for controlling seepage through the embankment. Field observations show that wet areas and slope irregularities exist on the downstream face of the dam, which suggests potential instability of the embankment. Various seepages on the left abutment also require further evaluation. The outlet pipe gate, which is the only emergency drawdown facility for the impoundment, is inoperative and should be repaired immmediately. Based on the recommended spillway evaluation procedure, the capacity of the spillway was found to be adequate to pass the recommended flow of probable maximum flood. It is recommended that the owner should develop a formal warning system to alert the downstream residents in the event of emergencies.
Download or read book National Dam Inspection Program Bigby Run Dam NDI ID Number PA 226 DER ID Number 56 21 Ohio River Basin Bigby Creek Somerset County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment of Bigby Run Dam is based upon visual observations made at the time of inspection, review of available records and data, hydraulic and hydrologic computations and past operational performance. The Bigby Run Dam appears to be in fair condition. Maintenance is considered fair. The concrete spillway is deteriorating with marked deterioration on the right spillway wall. Minor seepage was observed at the toe of the dam, adjacent to the left abutment contact. Seepage was estimated at 2 to 5 gallons per minute. The seepage should be monitored. The Bigby Run Dam is a high hazard-small size dam. The recommended Spillway Design Flood (SDF), for a dam of this size and classification, is in the range of 1/2 PMF to PMF. Since the Bigby Run Dam just meets the minimum criteria; and since the dam is located in a rural area suggesting only appreciable economic loss; compliance with the current practice of the Baltimore District Corps of Engineers leads to the selection of the 1/2 PMF as the Spillway Design Flood (SDF).
Download or read book National Dam Inspection Program High Point Lake NDI Number PA 231 Ohio River Basin Negro Glade Run Somerset County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1978 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, past performance, and available engineering data, the facility is considered in good condition. The spillway and reservoir are capable of passing and/or storing the flow resulting from a storm of PMF magnitude without overtopping; consequently, the spillway is considered adequate. It is recommended that the owner: (a) Fill in the erosion gullies that have developed to the right of the spillway sidewall with materials that will retard further erosion. The seepage should also be monitored to insure that the condition does not worsen, (b) Develop a formal warning system to notify downstream residents should hazardous conditions develop, and (c) Develop a manual for the operation and maintenance of the outlet works at the facility. (Author).
Download or read book National Dam Inspection Program Mammoth Lake Dam NDI ID Number PA 466 DER ID Number 65 130 Ohio River Basin Sewickley Creek Westmoreland County Pennsylvania Phase I Inspection Report written by Lawrence D. Andersen and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the evaluation of the conditions existing April 9 and May 25, 1979, the condition of Mammoth Lake Dam is considered to be good. The only two conditions noted which would require attention at this time are the filling of the erosion ditches on each side of the spillway structure and cleaning the debris from the outlet works discharge structure. The flood discharge capacity of Mammoth Lake Dam was found to be within the recommended capacity range of the 100-year flood to one-half of the probable maximum flood (PMF) relative to its size and hazard classification. Considering the 15-foot height of the dam is within the middle one-third of the zero to 25-foot height size classification range, the spillway capacity of 4770 cfs is rated to be adequate.
Download or read book National Dam Inspection Program Deer Valley Lake Dam NDS I D Number PA 00230 PennDer I D Number 56 76 Ohio River Basin Cove Run Somerset County Pennsylvania Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, operational history, and available engineering data, the dam is considered to be in fair condition. Structural deficiencies noted during the inspection include an inoperable drawdown mechanism, seepage and ponded conditions at the downstream toe, dense overgrowth (bushes, weeds, small trees) on the down stream slope, and minor concrete deterioration in the spillway. The size classification of the facility is intermediate and its hazard classification is considered to be significant. In accordance with recommended guidelines, the Spillway Design Flood (SDF) for this facility is 1/2 the Probable Maximum Flood (PMF). Results of the hydrologic and hydraulic analysis indicate that the facility can accommodate approximately 32 percent of the PMF and/or 64 percent of SDF (1/2 PMF). Thus, the spillway system is considered inadequate, but not seriously inadequate.
Download or read book National Dam Inspection Program Quemahoning Dam NDI ID Number 740 Ohio River Basin Quemahoning Creek Somerset County Pennsylvania Phase I Inspection Report written by D'APPOLONIA CONSULTING ENGINEERS PITTSBURGH PA. and published by . This book was released on 1978 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Quemahoning Dam consists of an earth embankment 955 feet long with a maximum height of 100 feet from the downstream toe. The combined primary and emergency spillway is located on the right abutment (looking downstream). Based on the evaluation of the conditions as they existed on the dates of inspection (June 8 and 12, 1978), and as revealed by visual observations, the condition of Quemahoning Dam is assessed to be good. It is recommended that the owner periodically monitor and record the piezometers installed in 1961 to measure the pore pressures within the embankment to aid in future evaluation of the performance of the embankment. It is also recommended that appropriate repairs be made to stop concrete spalling on the spillway channel walls. The spillway has the recommended capacity to pass the probable maximum flood. Therefore, the spillway is adequate. It is further recommended that the owner should develop a formal warning system to alert the downstream residents in the event of emergencies.
Download or read book National Dam Inspection Program Pine Creek Dam North Park Lake NDI I D Number PA 467 DER I D Number 2 26 Ohio River Basin Pine Creek Allegheny County Pennsylvania Phase I Inspection Report written by Lawrence D. Anderson and published by . This book was released on 1979 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pine Creek Dam consists of an earth embankment approximately 1130 feet long with a maximum height of about 33 feet. As built, the crest of the dam was 60 feet wide with a 2 horizontal to 1 vertical sslope on both the upstream and downstream faces. Over the years, significant fill has been placed on the downstream side of the embankment, increasing the crest width to 300 to 400 feet. A two-lane roadway crosses the crest of the dam. Near the left abutment (looking downstream) the side slope of the spillway discharge channel defines the toe of the present embankment. However, for the remaining major portion of the embankment, no discernible demarcation exists between the embankment and the natural ground that can be identified as the toe of the embankment. Fill placed on the downstream side of theembankment gradually merges to the right abutment. The flood discharge facilities for the dam consist of a combined primary and emergency spillway located near the left abutment. The spillway structures include an ogee overflow section, circular arc in plane view, which discharges into a rectangular concrete discharge channel. A single-span highway bridge crosses the spillway discharge channel, approximately 70 feet downstream from the crest of the overflow section. The crest of theogee overflow section of the spillway is located at an elevation approximately 10 feet below the low point on the crest of the dam.
Download or read book National Dam Inspection Program Clear Lake Dam NDI ID Number PA 175 DER ID Number 20 3 Ohio River Basin East Branch Oil Creek Crawford County Pennsylvania Phase I Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1981 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inspection and review of data of the Clear Lake Dam did not reveal any problems which require emergency action. The dam appeared to be in poor condition and poorly maintained. The Clear Lake Dam is a high hazard-small size dam. The spillway design flood (SDF) for a dam of this size and classification is in the range of the 1/2 PMF to the PMF. The PMF has been selected as the spillway design flood based on the downstream potential for loss of life. The spillway and reservoir are capable of controlling approximately 6% of the PMF. Based on criteria established by the Corps of Engineers, the spillway is termed seriously inadequate. Clear Lake Dam is classified as an unsafe non-emergency dam. A detailed stability and seepage analysis should be conducted by a registered professional engineer knowledgeable in dam design and construction and should be conducted in conjunction with a hydrologic and hydraulic analysis of the structure to increase spillway capacity and the stability of the structure. The method used to block the penstock should be investigated by a registered professional engineer knowledgeable in dam design and construction. Repairs should be conducted accordingly.
Download or read book National Dam Inspection Program Lake Oneida Dam NDI Number PA 272 Ohio River Basin Connoquesnessing Creek Butler County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1978 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Oneida Dam is an earthfill embankment with a concrete corewall and a steel sheetpile cutoff. The overall length of the embankment is approximately 830 feet and its maximum height is approximately 38 feet. The facility is equipped with a concrete spillway at the right abutment and 30-inch diameter blow-off and supply lines encased in concrete beneath the embankment. The lines are gated in a control tower located within the upstream slope near the embankment center. Access to the gate house is provided by a foot bridge.
Download or read book National Dam Inspection Program Galion Bay Dam NDI ID Number PA 747 DER ID Number 17 107 Ohio River Basin Gravel Lick Clearfield County Pennsylvania Phase I Inspection Report written by D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA. and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Galion Bay Dam consists of an earth embankment approximately 400 feet long with a maximum height of 37 feet from the downstream invert of the outlet conduit and a crest width of 20 feet. Galion Bay Dam is one of the three dams which impound Lake Rene. The other two dams are Wolf Creek Dam, located at the west end of Lake Rene, and Lake Rene Dam, located on the east side of the reservoir. Lake Rene Dam, which was constructed in 1955, was the original dam at the site. Galion Bay Dam and Wolf Creek Dam were constructed in 1971 in conjunction with the enlargement of Lake Rene. The flood discharge facilities for Lake Rene consist of primary and emergency spillways associated with Galion Bay and Wolf Creek dams. The Galion Bay Dam flood discharge facilities are comprised of a drop inlet primary spillway located at the center of the embankment and an emergency spillway on the right abutment (looking downstream). The primary spillway structure consists of a single-stage reinforced concrete riser, a 36-inch-diameter reinforced concrete conduit, and a plunge pool at the downstream end of the outlet pipe. The emergency spillway is a 30-foot-wide trapezoidal earth channel excavated into the right abutment. The reservoir outlet pipe for the dam consists of a 15-inch steel pipe extending from the upstream toe of the dam to the drop inlet structure.
Download or read book National Dam Inspection Program Wolf Creek Dam Lake Rene NDI I D Number PA 748 DER I D Number 17 108 Ohio River Basin Wolf Creek Clearfield County Pennsylvania Phase I Inspection Report written by D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA. and published by . This book was released on 1979 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wolf Creek Dam consists of an earth embankment approximately 1050 feet long with a maximum height of 34 feet from the downstream invert of the outlet works conduit and a crest width of 40 feet. Wolf Creek Dam is one of the three dams which impound Lake Rene. The other two dams are Galion Bay Dam, located at the south side of Lake Rene, and Lake Rene Dam, located on the east side of the reservoir. Lake Rene Dam, Which was constructed in 1955, was the original dam at the site. Wolf Creek Dam and Galion Bay Dam were constructed in 1971 in conjunction with the enlargement of Lake Rene. The flood discharge facilities for Lake Rene consist of primary and emergency spillways associated with Wolf Creek and Galion Bay dams. The Wolf Creek Dam flood discharge facilities are comprised of a drop inlet primary spillway located at the center of the embankment and an emergency spillway on the left abutment (looking downstream). The primary spillway structures consist of a single-stage reinforced concrete riser, a 36-inch-diameter reinforced concrete conduit, and a plunge pool at the downstream end of the outlet pipe. The emergency spillway is an 130-foot-wide trapezoidal earth channel excavated into the left abutment.
