National Dam Inspection Program Deckers Dam Ndi Id Number Pa 00299 Der Id Number 64 203 Delaware River Basin Seeley Brook Wayne County Pennsylvania Phase I Inspection Report
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| Total Pages | : 76 |
| Release | : 1981 |
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Based on visual inspection, the Deckers Dam is judged to be in good condition. The spillway capacity of Deckers Dam is rated as adequate. The unknown condition of the valve, regulating flow through the outlet pipe, precluded assessment of the outlet works. Observations during pressure flow conditions in the outlet pipe are essential to the safety evaluation of the dam. A ready access to an operable valve, or other method of drawing down the reservoir level during emergencies, is required. Although the dam and appurtenances appear to be in good repair, there is no formal maintenance program for the facility. There is no warning system and evacuation plan in effect at the present time.
| Author | : Frederick Futchko |
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| Total Pages | : 91 |
| Release | : 1981 |
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Based on the criteria established for these studies, Freethy Dam is judged to be unsafe, nonemergency, because the spillway capacity is 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. Based on the size of the dam and reservoir, the 1/2 PMF is selected as the SDF. The existing spillway will pass only about 2 percent of the PMF before overtopping of the dam occurs. It is judged that the dam could not withstand the depth and duration of overtopping during storms of only 20 percent of the PMF. Failure of the dam would cause an increased hazard for loss of life downstream. Overall, the dam is judged to be in good condition.
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| Total Pages | : 1314 |
| Release | : 1982 |
| Genre | : Science |
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| Author | : CORPS OF ENGINEERS BALTIMORE MD BALTIMORE DISTRICT. |
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| Total Pages | : 76 |
| Release | : 1981 |
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Contents: Brief Assessment of General Condition and Recommended Action; Project Information; Engineering Data; Visual Inspection; Operational Procedures; Hydrology and Hydraulics; Structural Stability; Assessment, Recommendations, and Proposed Remedial Measures; Appendices.
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| Total Pages | : 92 |
| Release | : 1982 |
| Genre | : Research |
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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.
| 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 | : 66 |
| Release | : 1981 |
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Based on a visual inspection, operational history, and hydrologic/ hydraulic analysis, the dam is considered to be in fair condition. The size classification of the facility is small and the hazard classification is considered to be significant. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) for the facility ranges between the 100-year frequency flood and the 1/2 PMF (Probable Maximum Flood). Since the facility is classified near the lower bounds of the small category, the SDF is considered to be the 100-year frequency flood. Results of the hydrologic and hydraulic analysis indicate the facility is not capable of passing the inflow resulting from a 100-year frequency flood without overtopping the embankment. Consequently, the spillway system at Lake Florence Dam is considered to be inadequate.
| Author | : WOODWARD-CLYDE CONSULTANTS PLYMOUTH MEETING PA. |
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| Total Pages | : 78 |
| Release | : 1979 |
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Greene-Dreher Dam is a 20-foot high earthern embankment, 1,000 feet long which impounds a 152 acre-foot flood water retention pool. Total estimated volume of fill is approximately 30,000 cubic yards. The zoned embankment was constructed on natural soils without a cutoff trench or a grout curtain. The embankment contains three material zones; Zone 1, a relatively impervious core of silt and and silty sand; Zone 2, composed of silty gravel and silty sand; and an outer shell of Zone 3 material, described as rock larger than 6 inches in diameter. The embankment crest is 12 feet wide at a design settled elevation of 2,036 feet, and both upstream and downstream slopes are 3H:1V. The downstream section of the embankment contains a filter blanket approximately 2 feet thick, 30 feet wide and 320 feet long. The filter blanket is drained by a 6-inch diameter perforated corrugated metal pipe connected to a 6-inch diameter pipe which outlets adjacent to the principal spillway outlet.
| Author | : Frederick Futchko |
| Publisher | : |
| Total Pages | : 90 |
| Release | : 1981 |
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The purpose of the inspection is to determine if the dam constitutes a hazard to human life or property. Bunnell's Pond Dam is located on Carley Brook in Honesdale Borough, Wayne County, Pennsylvania. The overall appearance of the dam and appurtenant structures is fair.
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| Total Pages | : 77 |
| Release | : 1981 |
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Based on available records, visual inspection, calculations, and past performance, Kellow Lake Dam is judged to be in fair condition. 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. Based on the downstream conditions, the 1/2 PMF is selected as the SDF. Under existing conditions the spillway will pass only about 22 percent of the PMF. If all stoplogs were removed from the spillway, the spillway would pass about 51 percent of the PMF. The spillway capacity is rated as adequate provided that all stoplogs are removed. Potential stability problems exist for the dam. A slope failure occurred over one reach at an unknown time in the past. Although the damage in that reach does not appear to be serious, a similar failure could occur in a more critical area and threaten the overall stability of the dam. In addition, steel beams that support the roof of the spillway outlet channel are badly corroded and create a hazardous condition. Although some maintenance has been performed, the program should be expanded to correct all deficiencies.
