Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Memorial Lake Dam NDI Number PA 00603 DER Number 38 80 Susquehanna River Basin Lebanon County Pennsylvania Phase I Inspection Report written by BERGER ASSOCIATES INC HARRISBURG PA. and published by . This book was released on 1979 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Memorial Lake Dam was constructed in 1945 as a recreational facility for the Indiantown Gap Military Reservation. The 760 foot long rolled earthfill embankment has a maximum fill height of 37 feet above the original streambed. Reference is made to Appendix F, Plates III and IV, for a general plan and typical section. A cutoff trench was excavated along the centerline of the dam and a concrete cutoff wall was placed in this trench. A 110 foot long ogee spillway was excavated in the left abutment. It has a weir crest elevation of 430.0, which is 8 feet below the top of dam. The ogee discharges the water to an eight foot deep stilling basin. A control tower is located 12.5 feet upstream from the centerline dam. Flow through the 48-inch conduit is controlled inside the tower by a 48-inch sluice gate or by a gated weir also located inside the tower and near normal pool elevation.(Author).
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 Government Reports Announcements Index written by and published by . This book was released on 1979-11 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Stouffer Lake Dam NDI Number PA 01011 DER Number 38 082 Susquehanna River Basin Lebanon County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in fair condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is small and the hazard classification is high. These classifications indicate that the Spillway Design Flood (SDF) should be in the range of one-half the Probable Maximum Flood (PMF) to the full PMF. The recommended SDF for this structure is one-half the PMF. The spillway capacity is adequate for passing 29 percent of the PMF peak inflow without overtopping the dam. Failure of the embankment due to overtopping by one-half of the PMF would not significantly increase the risk to loss of life downstream. The spillway, therefore, is considered to be inadequate, but not seriously inadequate. Recommendations are presented for immediate action by the owner.
Download or read book National Dam Inspection Program Lake Conewago Dam NDI Number PA 00593 DER Number 38 012 Susquehanna River Basin Lebanon County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in poor condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is small, and the hazard classification is significant. These classifications indicate that the Spillway Design Flood (SDF) should be in the range of the 100 year flood to one-half the Probable Maximum Flood (PMF). The recommended SDF for this structure is the 100 year flood. The spillway capacity is insufficient for passing the SDF without overtopping the dam. The spillway, therefore, is considered to be inadequate. Recommendations are presented for immediate action by the owner.
Download or read book National Dam Inspection Program Lake Strause Dam NDI Number PA 01010 DER Number 38 068 Susquehanna River Basin Lebanon County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in good condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is small and the hazard classification is significant. These classifications indicate that the Spillway Design Flood (SDF) should be in the range of the 100 year flood to one-half the Probable Maximum Flood (PMF). The recommended SDF for this structure is the 100 year flood. The spillway capacity is insufficent for passing the SDF peak inflow without overtopping the dam. The spillway, therefore, is considered to be inadequate. The following recommendations are presented for immediate action by the owner: (1) That provisions be made to increase the spillway capacity. (2) That the bare areas on the downstream slope be reseeded. (3) That the drop inlet structure be inspected for structural adequacy after the reservoir has been lowered. (4) That the struts in the spillway be removed and that the wooden waterway diversion poles be secured by other means. (5) That a formal surveillance and downstream warning system be developed for use during periods of high or prolonged rainfall. (6) That an operation and maintenance manual be prepared for guidance in the operation of the dam during normal and emergency conditions, and that a schedule be developed for the annual inspection of the dam and its appurtenant structures. (Author).
Download or read book National Dam Inspection Program Reservation Dam NDI Number PA 00014 Pennder Number 38 78 Susquehanna River Basin Indiantown Run Lebanon County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. 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 visual inspection, operational history, and available engineering data, the dam is considered to be in good condition. The size classification of the facility is small and its hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility ranges between the 1/2 PMF (Probable Maximum Flood) and the PMF. Due to the high potential for damage to downstream structures and possibly loss of life, the SDF is considered to be the PMF. Results of the hydrologic and hydraulic analysis indicate the facility will pass and/or store about 77 percent of the PMF prior to embankment overtopping. Consequently the spillway is assessed as being inadequate, but not seriously inadequate. Deficiencies noted by the inspection team included the following: (1) large trees rooted within the downstream embankment face; (2) a damaged and inadequate spillway discharge channel; and (3) a bent gate stem and partially obstructed outlet associated with the blowoff conduit.
Download or read book National Dam Inspection Program Maple Lake Dam NDI ID Number PA 01026 DER ID Number 57 38 Susquehanna River Basin Branch of Blackwater Run Sullivan County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maple Lake Dam is an earthfill embankment 14.4 feet high and 283 feet long, excluding spillway. The emergency spillway is located at the left abutment, consisting of an earth channel having a trapezoidal cross section. The bottom width of the spillway at the reservoir outlet is 56 feet. A service spillway, consisting of a 12-inch riser pipe and an 8-inch diameter outlet pipe, is located approximately 100 feet from the right abutment. The outlet works was reported to consist of an 8-inch diameter asbestos cement pipe, extending upstream of the riser pipe to the reservoir and terminating with two sections of an 8-inch diameter vitrified clay pipe, having a concrete plug at the inlet. Based on visual inspection, the Maple Lake Dam is judged to be in good condition. Under the present conditions, the spillway will pass approximately 37 percent of the PMF. Should the top of the dam be restored to its design elevation, the spillway could pass the SDF without overtopping the dam.
Download or read book National Dam Inspection Program Lake Lehman Dam NDI Number PA 00341 DER Number 67 480 Susquehanna River Basin York County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in good condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is intermediate and the hazard classification is high. These classifications indicate that the Spillway Design Flood (SDF) should be the Probable Maximum Flood (PMF). The spillway capacity is adequate for passing 43 percent of the PMF peak inflow without overtopping the dam. The spillway, therefore, is considered to be inadequate, but not seriously inadequate. Some recommendations presented for immediate action by the owner are: (1) that measures shall be taken to provide an adequate spillway capacity, which shall include the raising of the embankment profile uniformly to at least its design crest elevation; (2) that the downstream toe and an area 20 feet beyond the toe be cleared on a regular basis of all brush, weeds and trees, permitting close observation of the seepage; and (3) that the slab joints in the spillway channel be filled with a joint material.
Download or read book National Dam Inspection Program Lewis Lake Dam NDI ID Number PA 00061 DER ID Number 58 7 Susquehanna River Basin Susquehanna County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1980 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in fair condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is small and the hazard classification is high. These classifications indicate that the Spillway Design Flood (SDF) should be in the range of one-half the Probable Maximum Flood (PMF) to the full PMF. The recommended SDF for this structure is one-half the PMF. The spillway capacity is adequate for passing only 10 percent of the PMF peak inflow without overtopping the dam. The spillway is considered to be seriously inadequate. The dam is therefore unsafe, non-emergency.
Download or read book National Dam Inspection Program Page s Lake Dam NDI Number PA 00062 PennDER Number 58 5 Susquehanna River Basin Salt Lick Creek Susquehanna County Pennsylvania Phase I Inspection Report written by BAKER (MICHAEL) JR INC BEAVER PA. and published by . This book was released on 1981 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Page's Lake Dam is owned and operated by the Lakeside Outing Club and is classified as a 'Significant' hazard - 'Intermediate' size dam. The dam was found to be in good overall condition on 27 October 1980. 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 the Probable Maximum Flood (PMF) is required for Page's Lake Dam. The 1/2 PMF was chosen as the SDF because the dam is on the low end of the 'Intermediate' size category in terms of storage. During the 1/2 PMF, the dam is overtopped by a maximum depth of 3.34 feet for a total duration of 11.83 hours. The spillway is therefore considered '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 Ebenezer Dam NDI Number PA 00599 DER Number 38 8 Susquehanna River Basin Lebanon County Pennsylvania Phase I Inspection Report written by BERGER ASSOCIATES INC HARRISBURG PA. and published by . This book was released on 1979 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ebenezer Dam is an earthfill structure, constructed in about 1820 by the Union Canal Company as a feeder for their canal. The embankment length is about 230 feet with a maximum height of 25 feet. The spillway chute, located in the right abutment, makes a sharp drop and bend about 55 feet from the centerline dam and then parallels the embankment abutment and toe and joins the original steambed near the left abutment of the embankment. An abandoned gate structure at the upstream toe of the dam provides an uncontrolled upstream discharge through a 20-inch cast iron pipe. This pipe is closed off at the downstream end by a 12-inch inoperable valve in a small stone /headwall structure. (Author).
Download or read book National Dam Inspection Program Pioneer Lake Dam NDI ID Number PA 431 DER ID Number 32 80 Susquehanna River Basin Offstream Hazelet Run Indiana 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: The assessment of Pioneer Lake 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 dam and appurtenant structures appear to be in fair condition. No major erosion was observed on the embankment crest. An erosion area was observed at the outlet for the 12 in. diameter cast iron pipe. Erosion at the outlet of the 12 in. diameter pipe exists on the downstream slope of the dam near the toe. Seepage 100 ft. right of the spillway channel was measured to be approximately 50 gallons per minute. A 30 in. corrugated metal pipe exists beneath the roadway near the outlet for the emergency spillway. It was observed during the inspection that the pipe is collapsing near the center of the pipe. Trees were observed growing along the upstream edge of the crest, and dense vegetation was observed along the entire length of the downstream slope. The Pioneer Lake 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 the 1/2 PMF to PMF. Due to the downstream potential for loss of life and property damage, the spillway design flood has been selected as the PMF. The spillway and reservoir are capable of controlling approximately 11% of the PMF without overtopping the embankment. Based on criteria established by the Corps of Engineers, the spillway is termed seriously inadequate. Pioneer Lake Dam is classified as unsafe, non-emergency.
Download or read book National Dam Inspection Program Bel Air Lake Dam NDI I D PA 0066 DER I D 058 116 Susquehanna River Basin Tributary of Snake Creek Susquehanna County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The condition of Bel-Air Lake Dam is considered to be unsafe/ nonemergency due to a seriously inadequate spillway capacity. The overall condition of the dam is considered to be fair. Although at this time no signs of significant distress were observed, it appears that the center of the dam has significantly settled. The design drawings show the design freeboard to be five feet, but the available freeboard is only approximately two feet. It also appears that fill has been placed on the downstream slope, increasing the crest width from the design value of 10 feet to about 30 feet near the center line of the dam and greater than 50 feet near the left abutment. The dam has no functional low level outlet facility.
Download or read book National Dam Inspection Program Negley Dam NDI Number PA 00948 DER Number 50 61 Susquehanna River Basin Perry County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this inspection is to determine if the dam constitutes a hazard to human life and property. The dam's location is Carroll Township, Perry County, U.S.G.S. Quadrangle - Newport, Pa. The general appearance of Negley Dam is good. The embankment appears to be well maintained, except for a small area at the downstream toe around the principal spillway pipe outlet. The principal spillway is a 34-inch drop inlet structure with an 18-inch outlet pipe. The emergency spillway, located in the left abutment, has a well defined channel.
Download or read book National Dam Inspection Program Brown s Lake Dam NDI ID Number PA 516 DER ID Number 59 68 Arlington Brown Susquehanna River Basin Tributary West Branch Stony Fork Creek Tioga County Pennsylvania Phase 1 Inspection Report written by and published by . This book was released on 1981 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment of Brown's Lake Dam is based upon visual observations made at the time of inspection, hydraulic and hydrologic computations and past operational performance. The inspection and review of data of the Brown's Lake Dam did not reveal any problems which would require emergency action. The dam appears to be in good condition and adequately maintained. Brown's Lake Dam is a high hazard-small size dam. The spillway design flood (SDF) for a dam of this size and classification is 1/2 PMF to the PMF. the PMF has been selected as the spillway design flood based on downstream potential for loss of life. The spillway and reservoir are capable of controlling the spillway design flood (PMF). Based on criteria established by the Corps of Engineers, the spillway is termed adequate. The following recommendations and remedial measures should be instituted as soon as possible. (1) A regularly scheduled maintenance program should be developed and implemented. (2) A warning system should be developed to warn downstream residents of large spillway discharges or imminent failure of the dam. (3) A safety inspection program should be implemented with inspections at regular intervals by qualified personnel. (4) The drainline valve should be operated on a regular basis.
