Download or read book National Dam Inspection Program Kennametal Reservoir Dam NDI Number PA 00482 Penn DER Number 65 120 Ohio River Basin Miller Run Westmoreland County Pennsylvania Phase I Inspection Report written by James P. Hannan and published by . This book was released on 1980 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a review of available design information and visual observations of conditions as they existed on the date of the field inspections, the general condition of the Kennametal Reservoir Dam is considered to be good. The structure is classified as a 'small' size, 'high' hazard dam. Corps of Engineers guidelines recommend 1/2 to one times the Probable Maximum Flood (PMF) for ('small' size, 'high' hazard dams. Kennametal Reservoir Dam's Spillway Design Flood is 1/2 the Probable Maximum Flood (PMF). Spillway capacity is 'inadequate' because the non-overtopping flood discharge capacity, was estimated using the HEC-1 computer program, was found to be 13 percent of the PMF. The spillway is not 'seriously inadequate' because failure of the structure would not significantly increase the flood stage and risk of loss of life downstream. The visual inspection indicated minor deficiencies which are considered correctable.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Breskin Dam Number 2 NDI Number PA 00485 PennDER Number 65 134 Ohio River Basin Fourmile Run Westmoreland County Pennsylvania Phase I Inspection Report written by James P. Hannan and published by . This book was released on 1980 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a review of available design information and visual observations of conditions as they existed on the date of the field inspection, the general condition of the Breskin Dam No. 2 is considered to be good. The structure is classified as an 'intermediate' size, 'high' hazard dam and the Spillway Design Flood is the Probable Maximum Flood. The spillway capacity was found to be 'inadequate' because the non-overtopping flood discharge capacity, as estimated using the HEC-1 computer program, was found to be 42 percent of the PMF. The spillway is not 'seriously inadequate', because in the opinion of the evaluating engineer, the dam will not fail at 50 percent of the PMF.
Download or read book National Dam Inspection Program Greenwalt Dam NDI Number PA 00476 PennDER Number 65 52 Ohio River Basin Crabtree Creek Westmoreland County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1980 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a review of available design information and visual observations of conditions as they existed on the date of the field inspection, the general condition of the Greenwalt Dam is considered to be in an unsafe, non-emergency condition.
Download or read book National Dam Inspection Program Beaver Dam NDI I D Number PA 00453 Pennder I D Number 65 7 Ohio River Basin Beaver Run Westmoreland 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 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beaver Dam is an earth embankment approximately 32 feet high and 385 feet long (including spillway). The dam is constructed with a masonry spillway located about 35 feet left of the right abutment. The crest of the spillway is 100 feet long and about 11 feet below the top of its wingwalls. Based on a visual inspection, operational history, and available engineering data, the dam is consisered to be in poor condition. The defunct facility has been essentially abandoned since 1952 and its reservoir is sediment filled. Results of the hydrologic and hydraulic analysis indicate that the facility is capable of passing and/or storing only 36 percent of the PMF without embankment overtopping. Structural deficiencies noted by the inspection team included substantial embankment overgrowth, an access road cut through the embankment near the left abutment, cracking of the masonry spillway wingwalls, and a sediment filled reservoir. Due to the seriously inadequate spillway and overall poor condition, the facility is considered unsafe but non-emergency as failure is not considered imminent.
Download or read book National Dam Inspection Program Derry Rod and Gun Club Dam NDI ID Number PA 518 DER ID Number 65 143 Ohio River Basin Miller Run Westmoreland County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dam appears to be in fair condition, with the condition of the operating facilities being considered as poor. The maintenance of the dam and operating facilities is considered poor. The condition of the principal spillway discharge line is in a visibly deteriorating condition at the outlet. A wet area was observed on the downstream slope of the dam. The condition of the wet area did not appear to pose an immediate problem relative to the stability of the structure. Groundwater and surface runoff near the right abutment has caused erosion gullies along the toe of the dam, adjacent to the right abutment contact. The erosion could potentially erode the toe of the dam, and the runoff should be diverted away from the toe of the dam. A low spot was noted during the inspection, and the top of dam should be filled to an elevation consistent with the top of slope at the emergency spillway at the left abutment. The drainline valve has not been operated in several years. The control stem for the valve reportedly is located in the reservoir, but the stem was not visible during the inspection period.
Download or read book National Dam Inspection Program PA 657 Dam Acme Dam NDI I D Number PA 00828 PennDER I D Number 65 133 Ohio River Basin Jacobs Creek 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: Based on a visual inspection, past performance, and available engineering data, the facility is considered to be in good condition. The size classification of the facility is intermediate and the hazard classification is considered to be high. The emergency spillway is capable of discharging the peak inflow resulting from a storm of PMF intensity and is, therefore, considered adequate. It is recommended that the owner: (a) Repair the damaged pond drain gate control and replace the missing manhole cover atop the service spillway riser. Consideration should be given to redesigning the gate control mechanism to protect it from future vandalism. (b) Consult with the U.S.D.A., Soil Conservation Service, to assess the erosion on the upstream slope in the area of the service spillway riser and implement any remedial measures deemed necessary. (c) Curtail the unauthorized vehicular travel across the embankment and repair and reseed any damaged (bare) areas. If control of unauthorized travel is not practical, some provision should be made to protect the embankment from rutting and erosion by placing a layer of gravel or stone across the crest. (d) Develop a formal operation and maintenance manual to ensure the continued proper care of the facility. In addition, a formal warning system should be implemented which provides detailed procedures to protect the lives and property of downstream residents. Included in the plan should be provisions for around-the-clock surveillance of the facility during periods of unusually heavy percipitation.
Download or read book National Dam Inspection Program Keystone Dam NDI Number PA 480 Ohio River Basin McCune Run Westmoreland 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 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dam Inspection Act, Public Law 92-367, authorized the Secretary of the Army, through the Corps of Engineers, to initiate a program of inspection of dams throughout the United States. The purpose is to determine if the dam constitutes a hazard to human life or property.
Download or read book National Dam Inspection Program Ligonier Dam NDI Number PA 00477 PennDER Number 65 117 Ohio River Basin South Fort of Mill Creek Westmoreland County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ligonier Dam (Ligonier Township Reservoir) is classified as a 'High' hazard - 'Small' size dam. The dam and reservoir, owned by the Ligonier Township Municipal Water Authority, are used for water supply. The dam was found to be in good overall condition at the time of inspection. Hydraulic/hydrologic evaluations, performed in accordance with procedures established by the Baltimore District, Corps of Engineers, for Phase I Inspection Reports, revealed that the spillway will pass approximately 35 percent of the Probable Maximum Flood (PMF) before overtopping will occur. A spillway design flood (SDF) in the range of the 1/2 Probable Maximum Flood (1/2 PMF) to the PMF is required for Ligonier Dam. Because of the relative small size of the impoundment the 1/2 PMF was chosen as the SDF. It was determined that during the 1/2 PMF the low area on the embankment would be overtopped by a depth of 0.66 foot and a duration of 4.50 hours. Because a limiting criteria of one foot or greater depth of overtopping and a duration of 2 hours was estimated for this dam, it was concluded that a dam failure during the 1/2 PMF is unlikely to occur.
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.
Download or read book National Dam Inspection Program Whitney Ridge Dam NDI Number PA 00474 PennDER Number 65 24 Ohio River Basin Westmoreland County Commonwealth of Pennsylvania Phase I Inspection Report written by James P. Hannan and published by . This book was released on 1980 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a review of available design information and visual observations of conditions as they existed on the date of the field inspection, the general condition of the Whitney Ridge Dam is considered to be poor. This assessment is based on visual observations and hydraulic calculations that indicated: (1) A possible inadequate margin of safety against slope failure as indicated by evidence of high ground water in the embankment. (2) Inability to locate outlet works system components or operate observed controls. (3) Poor hydraulic conditions at the Principal Spillway including dense tree and brush growth in the spillway channel and deterioration of the concrete overflow weir and channel bottom paving. (4) 'Inadequate' spillway capacity as determined using the HEC-1 Computer Program. The structure is a 'small' size, 'high' hazard dam.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1980 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Upper Bridgeport Dam NDI I D Number PA 00465 Pender I D Number 65 6 Ohio River Basin Jacobs Creek Westmoreland 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 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upper Bridgeport Dam is an earth embankment approximately 1,020 feet long (including spillways), with a maximum height of 21 feet. The embankment is divided into three sections by two spillways. The service spillway is a combination masonry and concrete trapezoidal-shaped weir structure with a 101-foot long crest located about 140 feet from the left abutment. The emergency spillway is a concrete broad-crested weir structure with a 250-foot crest length located about 320 feet to the left of the right abutment. Based on the visual inspection, operational history, and available engineering data, the dam is considered to be in poor condition. The facility has been essentially abandoned by the current owner and has not been in operation or maintained since 1972. Results of the hydrologic and hydraulic analysis indicate that the facility can accommodate approximately 20 percent of the PMF before overtopping of the embankment occurs. Since the dam's hazard rating is high, and embankment failure would result in an increase in the potential for loss of life downstrean from the dam, the present spillway system is assessed as being seriously inadequate.
Download or read book National Dam Inspection Program Kenda Dam NDI Number PA 00459 PennDER Number 65 118 Ohio River Basin Tributary of Little Sewickley Creek Westmoreland County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kenda Dam is owned and operated by the Westmoreland Recreation Society, Inc. and is classified as a Small size - High hazard dam. The dam was found to be in poor overall condition at the time of inspection. Hydraulic/hydrologic evaluations, performed in accordance with procedures established by the Baltimore District, Corps of Engineers, for Phase I Inspection Reports, revealed that the spillway will not pass the 1/2 Probable Maximum Flood (1/2 PMF) without overtopping the dam. A spillway design flood (SDF) in the range of the 1/2 PMF to Probable Maximum Flood (PMF) is required for Kenda Dam. The 1/2 PMF was selected as the SDF because of the small size of the drainage area and impoundment. During the 1/2 PMF, the dam is overtopped by a maximum depth of 1.24 feet for a total duration of 7.00 hours. It is estimated that, in its present condition, the dam is likely to fail during the 1/2 PMF. Analysis performed to assess the impact of failure of the dam on the damage center downstream indicated that a significant increase in damage would occur compared to conditions if the dam did not fail. Therefore, the spillway is assessed as being seriously inadequate. It is recommended that the owner immediately initiate an engineering study to further evaluate the spillway capacity and develop recommendations for remedial measures to reduce the overtopping potential of the dam.
Download or read book National Dam Inspection Program Jeannette Dam NDSI D PA 00486 PennderI D 65 9 Ohio River Basin Unnamed Tributary to Brush Creek Westmoreland 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 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jeannette Dam is a 36-foot high earth dam approximately 480 feet in length. The dam impounds a small 10-acre reservoir locally known as Mountain Valley Lake. The facility is equipped with a small concrete and masonry spillway located approximately 35 feet upstream of the embankment along the western shore of the lake. The spillway discharges into a trapezoidal-shaped diversion channel which parallels the western shore. A historical report indicates that the diversion channel, approximately 1500 feet in length, was designed to divert all stream inflow completely around the reservoir and that water was piped to the reservoir from other impoundments. Jeannette Dam is located across a small branch of Brush Creek approximately 2.5 miles west of Greensburg, in Hempfield Township, Westmoreland County, Pennsylvania.
Download or read book National Dam Inspection Program Baggaley Dam NDI Number PA 00454 PennDER Number 65 10 Ohio River Basin Indian Camp Run Westmoreland County Pennsylvania Phase I Inspection Report written by James P. Hannan and published by . This book was released on 1980 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on review of available design information and visual observations of conditions as they existed on the date of the field inspections, the general condition of Baggaley Dam is considered to be poor. The poor assessment is based on the inability to closely observe the downstream slopes, potential stability problems of the abutments and the condition of the principal spillway. The structure is classified as a 'small' size, 'high' hazard dam. Corps of Engineer guidelines recommend 1/2 to one times the Probable Maximum Flood for 'small' size 'high' hazrad dams. Baggaley Dam's Spillway Design Flood is 1/2 the Probable Maximum Flood (PMF). Spillway capacity is 'inadequate' because the non-overtopping flood discharge capacity, as estimated using the HEC-1 computer program, was found to be 10 percent of the PMF. The spillway is not 'seriously inadequate' because failure of the structure would not significntly increase the flood stage and risk of loss of life downstream.
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
