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National Dam Inspection Program Lake Somerset Dam Nds Id Number Pa 00229 Pennder Id Number 56 89 Ohio River Basin East Branch Of Coxes Creek Somerset County Pennsylvania Phase I Inspection Report
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Book Synopsis 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 by : Bernard M. Mihalcin
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 Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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 by : Bernard M. Mihalcin
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.
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 1980 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Dam Inspection Program. Gallo Dam (NDS I.D. Number PA-00233, Pender I.D. Number 56-91) Ohio River Basin, Beaverdam Run, Somerset County, Pennsylvania. Phase I Inspection Report by : GAI CONSULTANTS INC MONROEVILLE PA.
Download or read book National Dam Inspection Program. Gallo Dam (NDS I.D. Number PA-00233, Pender I.D. Number 56-91) Ohio River Basin, Beaverdam Run, Somerset County, Pennsylvania. Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1979 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gallo Dam is a 29-foot high earth embankment approximately 690 feet long (including spillway). The embankment is reportedly comprised of 3 sections which include an impervious core, a semi-pervious upstream section and a pervious downstream section. The facility is served by a chute channel spillway, with discharges controlled by a free overfall, concrete weir structure. The spillway is located near the right abutment, and has a crest length of 39 feet. In addition, the facility is equipped with a 18-inch diameter steel pipe encased in concrete used as a low level outlet as well as a 16-inch diameter steel siphon which was installed in 1973.
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 1980 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Dam Inspection Program. Laurel Hill Creek Dam, (NDS I.D. Number PA-00235, PennDer I.D. Number 56-85) Ohio River Basin, Laurel Hill Creek, Somerset County, Pennsylvania. Phase I Inspection Report by : Bernard M. Mihalcin
Download or read book National Dam Inspection Program. Laurel Hill Creek Dam, (NDS I.D. Number PA-00235, PennDer I.D. Number 56-85) Ohio River Basin, Laurel Hill 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 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, operational history, and available engineering data, the dam and its appurtenances are considered to be in good condition. The size classification for the facility is intermediate and the hazard classification is high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility is the Probable Maximum Flood (PMF). Results of the hydrologic and hydraulic analysis indicate that the facility is capable of passing and/or storing only 36 percent of the PMF. The analysis also indicates that spillway discharges are controlled by the downstream valley capacity when the flow over the weir exceeds approximately 3 feet (10 feet below the embankment) after which the pool level and tailwater will rise at roughly the same rate. Thus, failure from overtopping is essentially precluded and the spillway is considered inadequate, but not seriously inadequate. The consequences of embankment inundation by tailwater and subsequent rapid drawdown are uncertain; although, it is noted that portions of the downstream slope are designated as pervious fill and rock toe on the design drawings. This construction is favorable with respect to rapid drawdown response; however, thorough inspection of the embankment should be performed during and after inundation.
Book Synopsis National Dam Inspection Program. North Fork Dam. (NDS ID Number 234). Ohio River Basin, North Fork Bens Creek, Somerset County, Pennsylvania by : D'APPOLONIA CONSULTING ENGINEERS PITTSBURGH PA.
Download or read book National Dam Inspection Program. North Fork Dam. (NDS ID Number 234). Ohio River Basin, North Fork Bens Creek, Somerset County, Pennsylvania written by D'APPOLONIA CONSULTING ENGINEERS PITTSBURGH PA. and published by . This book was released on 1978 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inspection was performed pursuant to the authority granted by The National Dam Inspection Act, Public Law 92-367, to the Secretary of the Army, through the Corps of Engineers, to conduct inspections of dams throughout the United States. The purpose of this inspection is to determine if the dam constitutes hazard to human life or property.
Book Synopsis National Dam Inspection Program. Laurel Hill Lake Dam (NDI I.D. Number PA-267, Penn. DER Number 56-66) Ohio River Basin. Laurel Hill Creek, Somerset County, Pennsylvania Phase I Inspection Report by : James D. Hainley
Download or read book National Dam Inspection Program. Laurel Hill Lake Dam (NDI I.D. Number PA-267, Penn. DER Number 56-66) Ohio River Basin. Laurel Hill Creek, Somerset County, Pennsylvania Phase I Inspection Report written by James D. Hainley and published by . This book was released on 1980 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laurel Hill Lake Dam is classified as an intermediate size high hazard dam in accordance with the U.S. Army Corps of Engineers dam safety criteria. Based on the evaluation of available design information and visual observations of conditions as they existed on the dates of the field reconnaissances, the general condition of Laurel Hill Lake Dam is considered to be good. However, the cause and origin of a seepage zone located downstream of the dam embankment could not be conclusively established by visual observation and review of the construction drawings. Therefore, it is recommended that periodic monitoring of the seep be made by the dam owner. The presence of eroded footpaths, animal burrows, cracking and spalling on concrete surfaces, and shallow depression located on the dam crest, are considered minor deficiencies in need of maintenance. Guideline criteria recommend a PMF spillway design flood for intermediate size, high hazard dams. Spillway discharge capacity was found to be seriously inadequate based on the following data: (1) Maximum non-overtopping spillway discharge capacity is 34 percent PMF, (2) Failure of the dam resulting from 37 percent PMF overtopping significantly increases the downstream loss of life and damage potential compared to that which would exist prior to dam failure. Laurel Hill Lake Dam is categorized as unsafe, non-emergency in accordance with recommended criteria.
Book Synopsis National Dam Inspection Program. Lost Creek Dam McKeesport Y.M.C.A. (NDI ID Number PA-739 PennDer Number 56-83), Ohio River Basin, Lost Creek, Somerset County, Pennsylvania. Phase I Inspection Report by : ACKENHEIL AND ASSOCIATES INC BALTIMORE MD.
Download or read book National Dam Inspection Program. Lost Creek Dam McKeesport Y.M.C.A. (NDI ID Number PA-739 PennDer Number 56-83), Ohio River Basin, Lost Creek, Somerset County, Pennsylvania. Phase I Inspection Report written by ACKENHEIL AND ASSOCIATES INC BALTIMORE MD. and published by . This book was released on 1980 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lost Creek Dam is classified as a 'small' size, 'significant' hazard dam in accordance with U.S. Army Corps of Engineers dam safety criteria. Based on the evaluation of available design information and visual observations of conditions as they existed on the dates of the field reconnaissances, the general condition of Lost Creek Dam is considered to be good. Wet zones, observed located at the downstream embankment toe, are believed attributable to surface runoff, and are not considered significant relative to dam stability at the present time. However, seepage emanating along the reservoir drain pipe outlet may represent a potential hazard to the dam. The cause and origin of this seepage could not be conclusively established by visual observation and review of construction documents. Therefore, periodic monitoring of the seep is recommended.
Book Synopsis National Dam Inspection Program. Hinckston Run Dam (NDS I.D. Number PA-00430, PennDer I.D. Number 11-9), Ohio River Basin, Hinckston Run, Cambria County, Pennsylvania. Phase I Inspection Report by : Bernard M. Mihalcin
Download or read book National Dam Inspection Program. Hinckston Run Dam (NDS I.D. Number PA-00430, PennDer I.D. Number 11-9), Ohio River Basin, Hinckston Run, Cambria County, Pennsylvania. Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, review of post-construction engineering studies, and available engineering data, the Hinckston Run Dam is considered to be in good condition. Deficiencies were limited to general deterioration of the concrete spillway section, and apparent inoperability of the valves within the intake tower. The size classification of the facility is intermediate, and the hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility is the Probable Maximum Flood (PMF). Results of the hydrologic and hydraulic analysis indicate the facility can pass and/or store about 38 percent of the PMF prior to overtopping of the embankment. Overtopping, even under floods of PMF magnitude, is not expected to cause failure of the unusually massive embankment configuration which is composed of erosion-resistant, hot-poured slag. Thus, the spillway system is considered to be inadequate, but not seriously inadequate.
Book Synopsis 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 by :
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).
Book Synopsis National Dam Inspection Program. Bigan Dam (NDI ID Number PA-237, DER ID Number 56-94), Ohio River Basin, Sandy Run, Somerset County, Pennsylvania. Phase I Inspection Report by :
Download or read book National Dam Inspection Program. Bigan Dam (NDI ID Number PA-237, DER ID Number 56-94), Ohio River Basin, Sandy Run, Somerset County, Pennsylvania. Phase I Inspection Report written by and published by . This book was released on 1981 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bigan Dam appears to be in poor condition and modifications to the dam have apparently been in progress for several years. The reservoir pool is maintained at a reduced level due to a directive from the Commonwealth pending the completion of design modifications to the structure. Due to the questionable condition of the earthen embankment section near the right abutment, the static stability of the structure is questionable. The spillway for the dam is a temporary structure, and a new spillway is planned at the dam. The owner should be urged to complete the construction of the facility as soon as possible. The completion of the structure should include an assessment of the earthen embankment section near the right abutment, and the stability of the section should be evaluated.
Book Synopsis National Dam Inspection Program. Mine Number 60-Pond 5 (NDI Number PA 01144, PENN DER Number 63-88), Ohio River Basin, Tributary to Center Branch-Pigeon Creek, Washington County, Pennsylvania. Phase I Inspection Report by : ACKENHEIL AND ASSOCIATES INC PITTSBURGH PA.
Download or read book National Dam Inspection Program. Mine Number 60-Pond 5 (NDI Number PA 01144, PENN DER Number 63-88), Ohio River Basin, Tributary to Center Branch-Pigeon Creek, Washington County, Pennsylvania. Phase I Inspection Report written by ACKENHEIL AND ASSOCIATES INC PITTSBURGH PA. and published by . This book was released on 1981 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the investigation is to make a determination on whether or not the dam constitutes a hazard to human life or property. Mine No. 60-Pond 5 is located at the headwaters of an unnamed tributary to the Center Branch of Pigeon Creek, in Somerset Township, Washington, County, Pennsylvania. The Mine No. 60-Pond 5 is classified as a 'high' hazard dam. The No. Mine 60-Pond 5 is owned by the Bethlehem Mines Corporation Eight-Four, Pennsylvania. The field inspection of Mine No. 60-Pond 5 was performed on 18 March 1981 and 26 March 1981 and consisted of: Visual observations of the embankment crest and slopes, groins and abutments; Visual observations of the principal (and emergency) spillway including approach channel, overflow crest, and discharge channel; Visual observations of the embankment's downstream toe area including drainage channels and surficial conditions; Visual observations of downstream conditions and evaluation of the downstream hazard potential; Visual observations of the reservoir shoreline and watershed; Visual observations of the outlet works; Transit stadia surveys of relative elevations along the embankment crest centerline, spillway, and across the embankment slopes. The visual observations were made during periods when the reservoir was at normal operating level.
Book Synopsis National Dam Inspection Program. Four-Mile Run Dam (NDS I.D. Number PA-00457, PennDer I.D. Number 65-126), Ohio River Basin, Four-Mile Run, Westmoreland County, Pennsylvania. Phase I Inspection Report by : Bernard M. Mihalcin
Download or read book National Dam Inspection Program. Four-Mile Run Dam (NDS I.D. Number PA-00457, PennDer I.D. Number 65-126), Ohio River Basin, Four-Mile Run, Westmoreland County, Pennsylvania. Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The visual inspection, operational history, and hydrologic/hydraulic analysis indicate the facility is in good condition. It is recommended that the owner: (a) Immediately fill and seal all cracks within the interior of the outlet conduit. (b) Specifically address the seepage condition observed to the right of the spillway in all future inspections and note any turbidity or changes in the rate of flow. (c) Re-evaluate and revise the present standard flood emergency procedures in accordance with, but not limited to, the following items: (1) Include a definite procedure of notifying downstream residents of a possible emergency. (2) Provide for an alternate means of communication in the event telephone lines become inoperative. (3) Provide for around-the-clock surveillance of the facility during periods of unusually heavy precipitation. (d) Provide additional riprap protection along the right sidewall of the spillway approach channel.
Book Synopsis National Dam Inspection Program. Heritage Reservation Dam (NDI I.D. Number PA-01142, PennDER I.D. Number 26-101), Ohio River Basin, Little Sandy Creek, Fayette County, Pennsylvania. Phase I Inspection Report by :
Download or read book National Dam Inspection Program. Heritage Reservation Dam (NDI I.D. Number PA-01142, PennDER I.D. Number 26-101), Ohio River Basin, Little Sandy Creek, Fayette County, Pennsylvania. Phase I Inspection Report written by and published by . This book was released on 1981 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, operational history, and available engineering data, Heritage Reservation Dam is considered to be in excellent condition. The size classification of the facility is intermediate and the hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) is considered to be the PMF (Probable Maximum Flood). Results of the hydrologic and hydraulic analysis indicate that the facility is capable of passing and/or storing the PMF without overtopping the dam or dike. Consequently, the spillway is considered adequate.
Book Synopsis National Dam Inspection Program. PA-482 Dam (NDI I.D. Number PA-469, DER I.D. Number 63-72), Ohio River Basin, Tributary of Harmon Creek, Washington County, Pennsylvania. Phase I Inspection Report by : D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA.
Download or read book National Dam Inspection Program. PA-482 Dam (NDI I.D. Number PA-469, DER I.D. Number 63-72), Ohio River Basin, Tributary of Harmon Creek, Washington 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 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The PA-482 dam is one of the 14 flood control projects in the Harmon Creek watershed. The dam consists of an earth embankment approximately 460 feet long with a maximum height of 38 feet from the downstream toe and a crest width of 14 feet. The flood discharge facilities for the dam consist 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 two-stage reinforced concrete riser, a 24-inch-diameter reinforced concrete conduit, and a reinforced concrete impact basin at the downstream end of the outlet pipe. The emergency spillway is a 200-foot-wide trapezoidal earth channel excavated into the left abutment. The reservoir outlet for the dam consists of a 15-inch steel pipe extending from the upstream toe of the dam to the drop inlet structure. Flow through the reservoir outlet is controlled by a manually operated sluice gate lcoated in the drop inlet structure.
