National Dam Inspection Program Hallowood Lake Dam Delaware River Basin Long Run Monroe County Pennsylvania Ndi Id Number Pa 00730 Der Id Number 45 194 Hallowood Homes Association Inc Phase I Inspection Report
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Author | : Frederick Futchko |
Publisher | : |
Total Pages | : 77 |
Release | : 1980 |
Genre | : |
ISBN | : |
Hallowood Lake Dam is a homogeneous, earthfill embankment. It is 31 feet high at its maximum section and 595 feet long. The spillway is located at the right abutment. The spillway consists of an approach channel, a concrete weir, an outlet channel, and a stilling basin. The crest length of the spillway is 55.0 feet. Based on visual inspection, available records, calculations, past operational performance, and according to criteria established for these studies, Hallowood Lake Dam is judged to be in good condition. The spillway will pass about 82 percent of the Probable Maximum Flood (PMF) without overtopping of the dam. No stability problems were evident for the embankment or the appurtenant structures at the time of the visual inspection. The ability of the outlet works to function is unknown because it has not been recently operated. Maintenance of the dam and appurtenant structures is considered inadequate.
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Total Pages | : 898 |
Release | : 1980 |
Genre | : Science |
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Total Pages | : 1428 |
Release | : 1980 |
Genre | : Government reports announcements & index |
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Author | : Gannett Fleming Corddry and Carpenter |
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Total Pages | : |
Release | : 1980 |
Genre | : Delaware River Watershed (N.Y.-Del. and N.J.) |
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Author | : GANNETT FLEMING CORDDRY AND CARPENTER INC HARRISBURG PA. |
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Total Pages | : 84 |
Release | : 1980 |
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Based on visual inspection, available records, calculations, and past operational performance, Pinetree Lake Dam is judged to be in good condition. The recommended Spillway Design Flood (SDF) for the size and the hazard classification of the dam varies between the 100-year flood and the 1/2 Probable Maximum Flood (PMF). Based on the criteria and the downstream conditions, the SDF is the 1/2 PMF. The spillway will pass the PMF with 0.5 foot of freeboard. The spillway capacity is rated as adequate. No stability problems were evident for the embankment. None of the observed deficiencies at the dam were considered an immediate hazard.
Author | : GANNETT FLEMING CORDDRY AND CARPENTER INC HARRISBURG PA. |
Publisher | : |
Total Pages | : 94 |
Release | : 1980 |
Genre | : |
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Lynchwood Lake Dam is 1,685 feet long and 20 feet high at its maximum section. The dam has an irregular alignment and consists of a rock-filled, timber crib dam about 1,275 feet in length, flanked on each end with reaches of embankment. A dry, stone masonry wall is located along the downstream side of the timber crib section, and there is an earthfill section upstream from the timber crib. The main spillway is located in the timber crib section of the dam near the original stream bed location. It is a broad crested weir with three concrete steps. The auxiliary spillway consists of a reach of earthen embankment lined with concrete on its downstream side and with riprap on its upstream side. The crest is protected by vegetation. Based on visual inspection, available records, calculations, past operational performance, and according to criteria established for these studies, Lynchwood Lake Dam is judged to be unsafe, non-emergency, because the spillway capacity is rated as seriously inadequate. The existing spillways can pass only 14 percent of the Probable Maximum Flood (PMF) before general overtopping of the dam occurs.
Author | : Frederick Futchko |
Publisher | : |
Total Pages | : 82 |
Release | : 1980 |
Genre | : |
ISBN | : |
Based on avaliable records, visual inspection, calculations, and past operational performance, Brown's Lake Dam is judged to be in poor condition. Based on the size and hazard classification of the dam, the recommended Spillway Design Flood is the Probalble Maximum Flood (PMF). The spillway can pass about 82 percent of the PMF. Since the dam cannot pass the PMF but can pass the 1/2 PMF, the spillway capacity is rated as inadequate. Deficiencies exist that are considered to be pertinent to the stability of the dam. The deficiencies include the following: seepage, steep slopes, a depression on the top of the dam, growth of trees on the dam, and holes and a depression on the downstream slope of the dam. The type of design and methods of construction increase the concern for the deficiencies. The condition of the outlet works is unsatisfatory. There are no upstream closure facilities. Maintenance of the dam is inadequate. (Author).
Author | : Bernard M. Mihalcin |
Publisher | : |
Total Pages | : 95 |
Release | : 1981 |
Genre | : |
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Monroe Lake Dam is located on Bear Swamp Run, a tributary to Marshall Creek, in Middle Smithfield Township, Monroe County, Pennsylvania. The facility is less than five miles north of the community of Marshalls Creek, Pennsylvania and approximately eight miles north of the city of East Stroudsburg, Pennsylvania. Observations made during the visual inspection indicate the embankment is in fair condition. The structure is characterized as very irregular and poorly aligned both horizontally and vertically. The downstream embankment toe is partially inundated by water that may be attributable to seepage through the embankment and/or leakage through or around the conduit. The water is trapped in a trough area between the embankments of the dam and the downstream roadway. The condition may be exaggerated because the drainage culvert under the road appears to be partially obstructed. Minor erosion was observed along both the upstream and downstream dam faces. Although particularly evident along the upstream slope adjacent the outlet riser and along the steepest portions of the downstream slope, the erosion is not considered to be significant at this time. Field measurements indicate low areas along the embankment crest between one-half and two feet below the elevation of the left spillway wingwall. The crest is covered with gravel and the slopes with weedlike vegetation.
Author | : Jack B. Rader |
Publisher | : |
Total Pages | : 81 |
Release | : 1980 |
Genre | : |
ISBN | : |
Based on visual inspection, available records, calculations and past operational performance, and according to criteria established for these studies, Mountain Springs Lake Dam is judged to be unsafe, non-emergency, because the spillway capacity is rated as seriously inadequate. The existing spillway will pass only about 10 percent of the Probable Maximum Flood (PMF) before overtopping of the dam occurs. It is judged that the dam could not withstand the depth and duration of overtopping that would occur for the 1/2 PMF. Failure of the dam would cause an increased hazard for loss of life downstream. As a whole, the dam is judged to be in fair condition. No stability problems were evident for the dam or appurtenant structures. The ability of the outlet works to function is unknown. There are no known upstream closure facilities. Maintenance of the dam is not adequate. Both the dam and the dike are overgrown with trees.
Author | : Frederick Futchko |
Publisher | : |
Total Pages | : 81 |
Release | : 1980 |
Genre | : |
ISBN | : |
Maple Lake Dam is a homogeneous, earthfill embankment. It is 35 feet high at its maximum section and 685 feet long. The main spillway is located at the maximum section of the dam. It consists of a reinforced concrete riser structure near the upstream toe of the dam, a 24-inch diameter conduit, and a concrete outlet structure at the downstream toe of the dam. The auxiliary spillway is an excavated, trapezoidal channel at the left abutment of the dam. Based on visual inspection, available records, calculations, past operational performance, and according to criteria established for these studies, Maple Lake Dam is judged to be in good condition. Based on existing conditions, the main and auxiliary spillways will pass an approximate minimum of 48 percent of the Probable Maximum Flood (PMF before overtopping of the dam occurs. No stability problems were evident for the embankment at the time of the visual inspection, but a potential hazard to stability exists due to erosion that might occur when there is flow in the auxiliary spillway.