Download or read book National Dam Inspection Program Spring Grove Dam NDI Number PA 01028 DER Number 67 004 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 74 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 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 sufficient for passing the SDF peak inflow without overtopping the dam. The spillway, therefore, is considered to be adequate. Recommendations are presented for immediate action by the owner.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1982-04 with total page 890 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 1982 with total page 1220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1982 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Kehm Run Dam NDI Number PA 01029 DER Number 67 483 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 61 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. 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 sufficient for passing the SDF peak inflow without overtopping the dam. The spillway, therefore, is considered to be adequate.
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 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 Number 5 Dam NDI ID Number PA 00375 DER ID Number 35 22 Susquehanna River Basin Stafford Meadow Brook Lackawanna County Pennsylvania Phase I Inspection Report written by Albert Charles Hooke and published by . This book was released on 1979 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on visual inspection, available records, calculations, and past operational performance, and according to criteria established for these studies, No. 5 Dam is judged to be unsafe, nonemergency, because the spillway capacity is rated as seriously inadequate. The spillway can pass 29 percent of the Probable Maximum Flood (PMF) without overtopping of the dam. Failure of the dam would cause an increase hazard to loss of life downstream. As a whole, the dam is judged to be in fair condition. The spillway gravity weir does not have any significant deviations from the guidelines for stability, since the toe pressure is well below the allowable. There is no evidence of instability on the embankment.
Download or read book National Dam Inspection Program PA 467 Dam NDI I D Number PA 00054 DER I D Number 58 131 SCS I D Number PA 467 Susquehanna County Commissioners Susquehanna River Basin Tributary to Martins Creek Susquehanna County Pennsylvania Phase I Inspection Report written by Frederick Futchko and published by . This book was released on 1979 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam consists of a zoned, earthfill embankment that is 590 feet long and 52 feet high at its maximum section. The main spillway is a drop spillway located near the right abutment of the dam. It consists of a concrete riser connected to a 30-inch diameter reinforced concrete pipe under the embankment. The auxiliary spillway is an excavated channel along the left abutment of the dam. It is a grass-linked excavation in earth. Based on visual inspection, available records, calculations and past operational performance, PA-467 Dam is judged to be in good condition. The existing spillway can pass the Probable Maximum Flood(PMF) without overtopping of the dam. The spillway capacity is rated as adequate. There is a slope stability analysis for the embankment, and it indicates that the embankment has adequate factors of safety. There is no evidence of significant problems threatening the embankment.
Download or read book National Dam Inspection Program Sheppard Dam NDI Number PA 00333 DER Number 1 71 Susquehanna River Basin Adams County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 70 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 adequate for passing the SDF peak inflow without overtopping the dam. The spillway, therefore, is considered to be adequate. Some recommendations presented for immediate action by the owner are: (1) that the tree trunk in the forebay area be removed; (2) that the sliding gate in the intake tower be maintained and operated on a regular basis to ensure its functioning in time of an emergency; (3) that the weed growth on the upstream slope and in the spillway outlet channel be removed on at least an annual basis; and (4) that a formal surveillance and downstream warning system be developed for use during periods of high or prolonged rainfall.
Download or read book National Dam Inspection Program Middle Creek Dam NDI Number PA 00731 DER Number 36 259 Susquehanna River Basin Lancaster 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 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Middle Creek Dam is an earthfill, sheetpile and concrete structure with a total length of about 500 feet. The height of the dam is 18 feet above the streambed with the maximum height of embankment being 10 feet above natural ground. The center half of the structure is a 250 foot long spillway and control structure constructed of two parallel lines of sheetpiling retaining a zoned fill and is capped with concrete. The 15 feet wide control structure is accessible from the left abutment by a walkway. The structure contains a minimum flow sluice gate and a 18-inch by 36-inch drawdown sluice gate. The downstream area, below the vertical drop weir, is protected with an 18-inch thick concrete slab. The spillway is connected with concrete cutoff walls on top of sheetpiles to the earth embankment at the abutments. The top of the dam is 4.0 feet above weir crest.
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 History of New London Connecticut written by Frances Manwaring Caulkins and published by . This book was released on 1852 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Glen Brook Number 4 Dam ndi Number PA 00650 DER Number 19 8 Susquehanna River Basin Columbia 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 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Glen Brook No. 4 Dam is an earthfill dam 250 feet in length plus a 34 foot long spillway. It is 47 feet high above the streambed. This dam is the last of three such dams constructed in this area. The other two dams, identified as No. 1 and No. 2 are in series with and are located upstream from No. 4. This entire system of dams forms a source of reserve water supply for the Borough of Berwick. Based upon 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 intermediate and the hazard classification is high. The spillway capacity is inadequate to pass the PMF (Probable Maximum Flood) peak inflow without overtopping the dam. The spillway is capable of passing 10 percent of the PMF and is classified as seriously inadequate.
Download or read book National Dam Inspection Program Ridgebury Lake Dam NDI I D Number PA 00727 PennDER I D Number 8 57 Susquehanna River Basin Tributary to Fall Creek Bradford County Pennsylvania Phase I Inspection Report written by Bernard M. Michalcin and published by . This book was released on 1980 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, operational history, and available engineering data, the facility is considered to be in good condition. The size classification of the facility is intermediate and its hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility is the PMF (Probable Maximum Flood). Results of the hydrologic and hydraulic analysis indicate the facility will pass and/or store only about 45 percent of the PMF prior to embankment overtopping. A breach analysis indicates that failure under less than 1/2 PMF conditions could lead to increased downstream damage and potential for loss of life. Thus, based on screening criteria provided in the recommended guidelines, the spillway is considered to be seriously inadequate and the facility unsafe, non-emergency. Calculations also indicate that if the spillway were constructed in accordance with available desing drawings, the facility could pass and/or store approximately 63 percent of the PMF.
Download or read book National Dam Inspection Program Upper Mt Holly Dam NDI Number PA 00583 DER Number 21 001 Susquehanna River Basin Cumberland County Pennsylvania Phase I Inspection Report written by Hendrik Jongsma and published by . This book was released on 1981 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dam's location is Borough of Mt. Holly Springs, Cumberland County U.S.G.S. Quadrangle - Mt. Holly Springs, Pa. The general appearance of Upper Mt. Holly Dam is poor. The earth embankment is overgrown with brush and trees and the slopes are uneven. The riprap at the downstream side of the spillway has several voids and several trees are growing in this area. The reservoir is silted for most of its storage area at normal pool elevation. The drawdown sluice gate leaks and is inoperable. The overall evaluation of these facilities indicates that Upper Mt. Holly Dam is in poor condition. The growth of brush and trees on the embankment and in the downstream area of the spillway should be removed. After this clearing, the embankment should be inspected for seepage and signs of instability. The embankment should be made level and should be protected against erosion with a good grass mat. The riprap at the downstream side of the spillway should be repaired.
