National Dam Inspection Program Harris Pond Dam Ndi Id Number Pa 00569 Penn Der Id Number 40 129 Susquehanna River Basin Roaring Brook Creek Luzerne County Pennsylvania Phase I Inspection Report
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| Author | : Bernard M. Mihalcin |
| Publisher | : |
| Total Pages | : 72 |
| Release | : 1981 |
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| ISBN | : |
Harris Pond Dam is a combination earth, concrete and masonry structure approximately 10 feet high and 135 feet long, including spillway. It is located on Roaring Brook Creek in Ross Township, Luzerne County, Pennsylvania. The overall appearance of the facility suggests it to be in good condition. The only deficiency noted by the inspection team that requires immediate remedial attention was the areas exhibiting concrete deterioration. Flashboards (reportedly removed during significant storms) were observed in-place across the service spillway. Although generally considered undesirable, they appear, in this particular case, to be of little significance relative to the safe operation of Harris Pond Dam.
| Author | : United States. Army. Corps of Engineers. Baltimore District |
| Publisher | : |
| Total Pages | : |
| Release | : 1981 |
| Genre | : Harris Pond Dam (Pa.) |
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| Total Pages | : 212 |
| Release | : 1981 |
| Genre | : Science |
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| Author | : Frederick Futchko |
| Publisher | : |
| Total Pages | : 120 |
| Release | : 1979 |
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Bryant Pond Dam is an earthfill and rockfill dam with a concrete core-wall. The earthfill extends along the upstream side of the core-wall and the rockfill extends along the downstream side. The dam, including the main and auxiliary spillways, is 425 feet long. The design height is 19 feet. The main spillway is located near the left abutment of the dam. It is a series of concrete slabs forming a cascade to the natural stream. Other than its exterior lines and grades, details of the main spillway are unknown. The main spillway crest is 40 feet long and 5 feet below the design top of the dam. The auxiliary spillway was designed to be a 175-foot long by 2-foot deep notch in the concrete core-wall. It was constructed 200 feet long. The auxiliary spillway was designed to allow water to flow over the rockfill on the downstream slope of the embankment. The outlet works is located directly to the right of the main spillway. It consists of two 2-foot square concrete conduits with concrete sluice gates at the upstream end. The various features of the dam, as designed, are shown on the Plates at the end of the report. The existing features are shown in Appendix D. (Author).
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| Total Pages | : 932 |
| Release | : 199? |
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| Author | : Bernard M. Mihalcin |
| Publisher | : |
| Total Pages | : 107 |
| Release | : 1980 |
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| ISBN | : |
Lake Jean Dam is a zoned earth embankment approximately 26 feet high and 780 long, including spillway. The emergency spillway is an uncontrolled, rectangular, concrete and rock cut chute channel located at the right abutment. The crest of the spillway is 20 feet long and is spanned by a concrete bridge which supports a portion of the bituminous roadway that covers the embankment crest. Drawdown capability is provided by means of a 30-inch diameter cast iron blowoff pipe controlled at the inlet by a 30-inch diameter sluice gate. The facility consists of a main dam (Lake Jean Dam) and two appurtenant saddle dams (east and west dikes). Results of the hydrologic and hydraulic analysis indicate the facility will pass and/or store about 73 percent of the PMF prior to overtopping the east dike. Thus, based on the screening criteria contained in the recommended guidelines, the spillway is considered to be inadequate, but not seriously inadequate. Should the saddle dams be regraded to their design elevation, the spillway would then pass floods in excess of the PMF and would be considered adequate.
| Author | : John A. Dziubek |
| Publisher | : |
| Total Pages | : 72 |
| Release | : 1981 |
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Hathaway Pond Dam is located in Ararat Township, Susquehanna County, Pennsylvania. The reservoir was originally created to provide water for power purposes. The reservoir slopes are moderate with a good cover of vegetation. There are three ponds upstream from Hathaway Pond Dam on two tributary streams. The western stream contains Romobe Lake (PennDER I.D. No. 58-10) which is 1750 feet upstream from Hathaway Pond Dam. The eastern tributary contains Ball Lake and an unnamed smaller pond in series. Ball Lake is 2450 feet upstream and will retain considerable storage while the smaller unnamed pond was considered to have no effect on Hathaway Pond Dam. Two homes, a trailer, and township road are located 1800 feet downstream from Hathaway Pond Dam. These could suffer economic damage in the event of a dam failure.
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| Total Pages | : 59 |
| Release | : 1981 |
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Based on visual inspection, Acre Pond Dam is judged to be in fair structural condition. In the absence of an adequate spillway, the dam is subject to frequent overtopping. Based on the location of the downstream dwellings and the fact that a few lives could be lost should the dam fail, the dam is classified as a significant hazard dam. Since the spillway cannot pass the 100- year flood without overtopping the dam, the spillway is rated as inadequate. Although there is some seepage thru the dam, there is no evidence of structural instability. There is no formal inspection and maintenance program or warning system and evacuation plan in effect at Acre Pond Dam. The dam is not properly maintained.
| Author | : Albert Charles Hooke |
| Publisher | : |
| Total Pages | : 95 |
| Release | : 1979 |
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Humboldt Dam is a homogeneous earthfill embankment with a masonry core-wall. The embankment is 974 feet long and 41 feet high at maximum section. A masonry gravity retaining wall, which acts as the spillway training wall, is at the right end of the embankment. The outlet works, which is near the middle of the embankment, consists of a masonry and corrugated metal intake structure with sluice gates, a 12-inch diameter cast-iron pipe(CIP), and a valve house at the toe of the dam. The intake structure is located on the upstream slope of the embankment; a bridge extends to it. Water supply pipes also extend from the intake structure. The masonry gravity spillway is at the right abutment of the dam. Its crest is 3.0 feet below the design elevation of the top of the dam and is 33.0 feet long. The spillway channel has a variable bottom width and a masonry gravity training wall on the left. The spillway channel extends along the right side of the valley.
| Author | : D'APPOLONIA CONSULTING ENGINEERS INC PITTSBURGH PA. |
| Publisher | : |
| Total Pages | : 70 |
| Release | : 1981 |
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Based on the evaluation of the existing conditions, the condition of Cooks Pond Dam is considered to be unsafe/nonemergency due to the seriously inadequate spillway capacity and structural deficiencies. The condition of the embankment is considered to be poor. The dam is old and in a general state of disrepair. The crest of the dam is irregular and the center of the dam appears to have settled. The stone wall along the downstream toe is irregular and bulging. The toe of the wall is swampy, caused by a general underseepage. In view of these observations, the overall stability of the dam is considered to be questionable, requiring further investigation and implementation of measures to improve the stability of the dam. The spillway capacity was evaluated according to the recommended procedure and was found to pass less than 10 percent of the Probable Maximum Flood (PMF) without overtopping the embankment. This capacity is less than the required spillway capacity of one-half PMF relative to the size and hazard classification of the dam. Because the spillway capacity is less than 50 percent of the PMF and it is estimated that failure of the dam due to overtopping would significantly increase the downstream hazard of loss of life compared to that which would exist just before failure, the spillway is considered to be seriously inadequate, and consequently the condition of the dam is considered to be unsafe/nonemergency.
