National Dam Inspection Report Lower Woods Pond Dam Pa 00152 Der Id 64 11 Delaware River Basin E Branch Dyberry Creek Wayne County Pennsylvania Phase I Inspection Report
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| Author | : John Boschuk (Jr) |
| Publisher | : |
| Total Pages | : 93 |
| Release | : 1978 |
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Lower Woods Pond Dam is a series of three dams owned by the Pennsylvania Fish Commission which were rebuilt in 1956 by the Fish Commission. The facility is considered to be in good condition and well maintained. Collectively, the dams are clasified as a 'High' hazard potential structure consistent with its potential to cause extensive property damage and possible loss of life in the event of failure. The dams are also clasified as an 'Intermediate' size structure based on its 1,470 acre-feet storage capacity. The design data and supplemental information pertinent to this structure were sufficient to evaluate it and the appurtenant structures in accordance with Phase I Guidelines. The hydrologic and hydraulic calculations indicate that the structure will pass 60 percent of the Probable Maximum Flood. Since the dams will be overtopped by one foot during the Probable Maximum Flood, the spillway systems are considered to be 'Inadequate' but not 'Seriously Inadequate'.
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| Total Pages | : 1048 |
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| Genre | : Science |
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| Total Pages | : 1024 |
| Release | : 1979 |
| Genre | : Government reports announcements & index |
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| Total Pages | : 171 |
| Release | : 1838 |
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| Total Pages | : 1108 |
| Release | : 1979 |
| Genre | : Science |
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| Author | : CORPS OF ENGINEERS BALTIMORE MD BALTIMORE DISTRICT. |
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| Total Pages | : 100 |
| Release | : 1981 |
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The visual inspection and review of available design and construction information indicate that Lake Quinn Dam is in fair condition. Deficiencies noted during the inspection included the lack of functional drawdown facilities and minor seepage through the masonry near the right abutment. Based on the size and hazard classification of the dam, the recommended Spillway Design Flood (SDF) varies between 1/2 the Probable Maximum Flood (PMF) and the PMF. The 1/2 PMF has been selected as the SDF due to the size of the dam and reservoir, and the downstream conditions. The hydrologic and hydraulic computations indicate that the combination of reservoir storage and spillway discharge capacity will pass only 3 percent of the PMF without overtopping the dam. Overtopping the dam could cause failure, which would lead to a significant increase in downstream loss of life and property damage. Therefore, the spillway for Lake Quinn Dam is considered to be seriously inadequate, and the dam is judged to be unsafe, non-emergency.
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| Total Pages | : 81 |
| Release | : 1981 |
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Based on available records, visual inspection, calculations, and past operational performance, Craft Pond Dam is judged to be unsafe, nonemergency, because the spillway capacity is rated as seriously inadequate. The recommended Spillway Design Flood (SDF) for the size and hazard classification of the dam varies between 1/2 of the Probable Maximum Flood (PMF) and the PMF. The selected SDF is the 1/2 PMF. The existing spillway will pass only about 23 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. Overall, the dam is in good condition. The maintenance of the dam is considered to be good; only a few minor maintenance deficiencies were observed. The other deficiencies observed were low spillway walls and an inoperable outlet works.
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| Total Pages | : 59 |
| Release | : 1981 |
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Perch Pond Dam is a composite earthfill-masonry structure, consisting of an earthfill embankment located between two dry stone masonry walls. The upstream wall is covered with concrete on the lake side of the wall. The dam is 165 feet long and 13.5 feet high. The crest is 16 feet wide, including the masonry walls. The spillway is a 12.7 foot long broad crested weir with a center pier that is 2.1 feet wide. The outlet works for the dam is an 8-in. cast iron pipe through the dam. Details of the inlet and the operational status of the outlet works could not be determined. Perch Pond Dam is judged to be in good structural condition, based on the visual inspection. Since the spillway cannot pass the 100-year flood without overtopping the dam, the spillway is rated as inadequate.
| Author | : John Boschuk (Jr) |
| Publisher | : |
| Total Pages | : 61 |
| Release | : 1979 |
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Gouldsboro Dam is owned by the Pennsylvania Fish Commission. The dam abuts a higher, wider railroad embankment. According to DER files, Gouldsboro Dam was built in 1895 and at least the outlet portion of the drop inlet discharge conduit was built in 1912. The facility is considered to be in fair condition and classified as a 'Significant' hazard potential structure. Hydrologic and hydraulic calculations indicate the dam will not be overtopped during the Probable Maximum Flood. Excess flows will pass over natural ground at the northeast end of the lake across Route 507 at Gouldsboro, Pennsylvania, and eventually into Snag Pond. Visual inspection of the dam and reservoir detected no significant problems other than an unserviceable drain gate. Since the dam and railroad embankment have a combined crest width on the order of 85 feet and would not overtop during large storms, it is judged that the stability of the embankment is adequate.
| Author | : CORPS OF ENGINEERS BALTIMORE MD BALTIMORE DISTRICT. |
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| Total Pages | : 66 |
| Release | : 1981 |
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The visual inspection and review of available design and construction information indicate that Bronson Pond Dam is in fair condition. The primary deficiency noted during the inspection was the lack of any spillway or outlet facilities for the dam. Based on the size and hazard classification of the dam, the recommended Spillway Design Flood (SDF) varies between the 100-year flood and one-half the Probable Maximum Flood (PMF). Based on the size of the dam and reservoir, and the downstream conditions, the 100-year flood has been selected as the SDF. The hydrologic and hydraulic computations indicate that the combinations of reservoir storage and overflow discharge capacity pass the 100-year flood without overtopping the dam. For this reason, the overflow capacity for Bronson Pond Dam is considered to be inadequate.
