Download or read book National Dam Inspection Program Moose Creek Reservoir Dam NDS I D Number PA 00423 PennDer I D Number 17 6 Susquehanna River Basin Moose Creek Clearfield County Pennsylvania Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, operational history, and available engineering data, the dam is considered to be in fair condition. In accordance with the recommended guidelines the spillway design flood for this facility is the Probable Maximum Flood (PMF). Results of the hydrologic and hydraulic analysis indicate that the facility is capable of passing and/or storing only 20 percent of the PMF without overtopping the embankment. Overtopping and embankment failure is also anticipated under less than 1/2 PMF flooding resulting in an increase in potential for loss of life. Thus, based on criteria contained in the recommended guidelines the spillway is considered seriously inadequate. Seepage was noted at the downstream toe in an area behind the old gate house. Also, seepage was observed to be issuing from the left embankment-abutment junction, about midway between the toe and the crest of the dam. Historical records indicate seepage was frequently noted in both areas. General surficial deterioration is evident on portions of the spillway, particularly the sidewalls.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1980 with total page 216 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 199? with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Pike Township Municipal Authority Dam NDS ID PA 00916 PennDer ID 17 111 Susquehanna River Basin Bear Run Clearfield County Pennsylvania Phase I Inspection Report written by Bernard M. Mihalcin and published by . This book was released on 1979 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bear Run Dam is an earth embankment approximately 42 feet high and 415 feet long (including spillway). The dam is provided with an unlined trapezoidal channel spillway cut into the left abutment. The spillway contains a short concrete control slab adjacent to the embankment crest. The downstream channel of the spillway is comprised of unvegetated granular material. The outlet works consists of a 16-inch diameter ductile iron pipe (blowoff) with a sluice gate located at the inlet and controlled by a manual operator from the dam crest. An 8-inch diameter ductile iron pipe with a perforated vertical intake riser serves as the supply lines are equipped with two gate valves that are manually operated from the crest and downstream slope. Bear Run is located on Bear Run in Pike Township, Clearfield County, Pennsylvania, about 4-1/2 miles west of the community of Bridgeport (located along Anderson Creek) and about 6 miles west of the community of Curwensville.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1980-03 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Kephart Dam NDS ID Number PA 00447 PennDER ID Number 14 89 Susquehanna River Basin Black Moshannon Creek Centre County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1979 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual inspection, past performance, and available engineering data, the facility is considered to be in good condition. The facility is capable of passing and/or storing the flow resulting from a flood of PMF intensity without overtopping, consequently, the spillway is considered adequate. It is recommended that the owner: (a) Have the embankment crest surveyed and infill any low spots to restore the embankment section to its design elevation (1874.0). (b) Extend the riprap protection to the top of the dam along the emergency spillway-embankment junction to provide slope protection in the event the emergency spillway should discharge at or near full capacity. (c) Develop a warning system to provide for the notification of temporary downstream residents should hazardous conditions develop.
Download or read book National Dam Inspection Program Mill Water Dam NDS I D Number PA 00703 DER I D Number 6 442 Susquehanna River Basin Back Creek Berks County Pennsylvania Phase I Inspection Report written by Mary F. Beck and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mill Water Pond Dam is owned by the Bethlehem Mines Corporation. The dam was originally built as an industrial water supply dam for the Grace Mine. As the mine is no longer in operation, water from the reservoir is no longer used. The dam and its appurtenant facilities are considered to be in good condition. The dam is classified as a Small size structure with a High hazard classification, consistent with the dam's location immediately above an occupied dwelling and above commercial buildings and other residences farther downstream on Conestoga Creek. In accordance with criteria established by Federal (OCE) Guidelines, the spillway design flood for this Small size dam and High hazard classification is one-half to the full Probable Maximum Flood (PMF). As the dam height and total capacity are near the lower limit of the size classification, the selected spillway design flood is one-half the PMF. Mining of the deep iron ore body has caused extensive subsidence. The mine waste rock is disposed of downstream of the subsidence area. Therefore, currently, Mill Water Pond intercepts surface runoff only from about 0.31 square mile immediately above the dam. Hydrologic and hydraulic computations presented in Appendix D indicate the maximum spillway capacity is greater than the peak PMF inflow from the reduced watershed. Therefore, the spillway system of this structure is considered to be Adequate.
Download or read book National Dam Inspection Program PA RC D 105 Dam NDI I D PA 0979 DER I D 058 138 Susquehanna River Basin Thomas Creek Susquenanna County Pennsylvania Phase I Inspection Report written by Lawrence D. Andersen and published by . This book was released on 1981 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of a Phase I investigation is to identify expeditiously those dams which may pose hazards to human life or property. The assessment of the general condition of the dam is based upon visual observations and review of available data. Detailed investigations and analyses involving topographic mapping, subsurface investigations, material testing, and detailed computational evaluations are beyond the scope of a Phase I investigation; however, the inspection is intended to identify any need for such studies which should be performed by the owner. In reviewing this report, it should be realized that the reported condition of the dam is based on observations of field conditions at the time of inspection along with data available to the inspection team. In cases where the reservoir was lowered or drained prior to inspection, such action, while improving the stability of the dam, removes the normal load on the structure and may obscure certain conditions which might otherwise be detectable if inspected under the normal operating environment of the structure.
Download or read book National Dam Inspection Program Park Place Dam Number 3 NDS ID PA 00682 DER ID 54 12 Susquehanna River Basin Tributary of North Mahanoy Creek Schuylkill County Pennsylvania Phase I Inspection Report written by WOODWARD-CLYDE CONSULTANTS PLYMOUTH MEETING PA. and published by . This book was released on 1979 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Park Place Dam No. 3 is a 32 foot high earthen embankment across an unnamed tributary of North Mahanoy Creek. The 685 foot long embankment impounds a 109 acre-foot reservoir within an 0.27 square mile drainage basin. Since very limited data exists regarding the physical features of the dam and appurtenances, most of the features described herein were obtained from field measurements taken during this inspection. The downstream slope was measured to be 2H:1V and is covered with riprap and occasional vegetation, as shown on Photographs 7 and 8. The average upstream slope could not be measured as the very small freeboard between the crest of the dam and the normal pool prevented a reliable measurement. The upstream portion of the slope between the crest and to at least several feet below the waterline was covered with riprap. The crest width ranges from 10 to 12 feet and averages approximately 11 feet wide. A 10-inch water supply pipe is located at the base of the embankment. An eight-inch water supply line branches off in the downstream valve house at the downstream toe. Discharge through both lines is controlled by valves located in the valve house.
Download or read book National Dam Inspection Program Pole Run Dam Number 4 NDS ID PA 00686 DER ID 54 36 Susquehanna River Basin Pole Run Creek Schuylkill County Pennsylvania Phase I Inspection Report written by WOODWARD-CLYDE CONSULTANTS PLYMOUTH MEETING PA. and published by . This book was released on 1979 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pole Run Dam No. 4 is a 30 foot high earthen embankment across Pole Run, a tributary of North Mahanoy Creek. The 780 foot long dam impounds a nine acre reservoir within an 0.58 square mile drainage basin. Very limited data exists regarding the physical features of the dam. The average measured downstream slope is 2H:1V, and the slope is covered with stone and vegetation. Since the average freeboard of the structure is less than one foot at normal pool level, the upstream slope could not be measured. A portion of the upstream slope is covered with stone, and this stone could be seen to extend at least two feet below the water and it is probable that it extends several feet below that elevation. The crest width ranges from 15 feet to 27 feet. The spillway is located at the right abutment, and consists of an open concrete channel with concrete retaining walls. The water supply intakes could not be inspected as they are below water and the pipes are buried in the embankment. The outlet pipes were inspected and three pipes were found. Near the toe of the dam, valves were located which are presumably used to control flow through the pipes.
Download or read book National Dam Inspection Program Ross Dam NDI ID Number PA 00978 DER ID Number 58 134 Susquehanna River Basin East Branch Tunkhannock Creek Susquehanna County Pennsylvania Phase I Inspection Report written by and published by . This book was released on 1981 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The visual inspection and review of available design and construction data indicate that Ross Dam is in fair condition. The deteriorated condition of the spillway ways and the adjacent low areas of the embankment are the primary deficiencies which require maintenance work to assure the operational safety of this facility. In accordance with the recommended guidelines, the spillway design flood (SDF) for this facility is in the range of the 100 year flood to the 1/2 PMF. Based on the size of this dam and the degree of downstream hazard, the selected SDF is the 100 year flood. The hydrologic and hydraulic computations indicate that the combination of reservoir storage and spillway discharge capacity will pass the SDF (100 year flood) prior to overtopping the embankment. Therefore, in accordance with the criteria outlined and evaluated in Section 5.5 of this report, the spillway for Ross Dam is considered to be adequate.
Download or read book National Dam Inspection Program Shaver Creek Dam NDS ID Number PA 577 DER ID Number 31 72 Susquehanna River Basin Shaver Creek Huntingdon County Pennsylvania Phase I Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1979 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shaver Creek Dam is a homogeneous earthfill dam. The embankment is 540 feet long and approximately 46 feet high. The upstream slope is 2.75H:1V and covered with riprap. The downstream slope is 2.5H:1V and covered with grasses. The crest width is 15 feet. The embankment has a select impervious core with random materials on the upstream and downstream sides of the core. A rock toe is present at the downstream end of the embankment. The cutoff trench is 12 feet wide and is excavated to firm rock. The spillway is located on the left abutment and consists of a concrete lined chute. The concrete weir is 1 foot wide and 52 feet long. The right side of the spillway has a 10 foot high concrete retaining wall extending 55 feet downstream of the concrete weir. Beyond the concrete retaining wall and on the left side of the spillway is a concrete paved chute with 2H:1V side slopes. The spillway exit channel is approximately 115 feet long and discharges into a 50 foot long stilling basin. The reservoir can be drained through a 4 foot by 4 foot concrete box culvert. The box culvert ends downstream at a concrete endwall. Flow through the 4 foot by 4 foot box is controlled by a sluice gate which is connected to a stem through the control tower.
Download or read book National Dam Inspection Program Pikes Creek Dam NDS PA 00576 DER 40 18 Susquehanna River Basin Pikes Creek Luzerne County Pennsylvania Phase I Inspection Report written by GANNETT FLEMING CORDDRY AND CARPENTER INC HARRISBURG PA. and published by . This book was released on 1978 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dam Inspection Act, Public Law 92-367, authorized the Secretary of the Army, through the Corps of Engineers, to initiate a program of inspection of dams throughout the United States. The purpose of the inspection is to determine if the dam constitutes a hazard to human life or property.
Download or read book National Dam Inspection Program Middle Creek Dam Clarence F Walker Lake NDS ID Number PA 00918 DER ID Number 55 45 SCS ID Number PA 637 Susquehanna River Basin Middle Creek Snyder County Pennsylvania Phase I Inspection Report written by KIMBALL (L ROBERT) AND ASSOCIATES EBENSBURG PA. and published by . This book was released on 1979 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Middle Creek Dam (Clarence F. Walker Lake) is a zoned earthfill dam. The embankment is 53 feet high and 1360 feet long. The axis of the dam has a 137 deg. bend in the upstream direction 860 feet from the left abutment. The emergency spillway is located on the right (north) abutment. The spillway is 170 feet wide and is open cut in shale and weathered shale. The principal spillway consists of 48 inch concrete pipe with a reinforced concrete riser inlet. Extending upstream of the riser is a 36 inch concrete pipe with a reinforced concrete reservoir drain inlet at the upstream toe of the embankment. At the downstream end of the 48 inch diameter pipe is a concrete impact stilling basin. The embankment and appurtenant structures appear to be in good condition and well maintained. However, the presence of the seepage zones and wet areas are of concern. The long term effect of these areas on the stability of the embankment is unknown. The existing spillways and reservoir are capable of controlling the PMF (probable maximum flood). Based upon criteria established by the Corps of Engineers, the spillway is termed adequate.
Download or read book National Dam Inspection Program Brown Creek Dam NDS ID Number PA 573 DER ID Number 40 208 Borough of Plymouth Susquehanna River Basin Brown Creek Luzerne County Phase I Inspection Report written by KIMBALL (L ROBERT) AND ASSOCIATES EBENSBURG PA. and published by . This book was released on 1980 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment of Brown Creek Dam is based upon visual observations made at the time of inspection, review of available records and data, hydraulic and hydrologic computations and past operational performance. The Brown Creek Dam appears to be in fair condition. The erosion on the crest and downstream embankment in the area of the principal spillway and along the wingwall of the emergency spillway crest should be repaired. Because the reservoir was dry (as is the normal condition) no determination as to potential wet zones or seepage areas could be made. Maintenance of the dam and operating facilities is considered fair. The Brown Creek Dam is a high hazard-small dam. The recommended spillway design flood (SDF) for this dam is the 1/2 PMF to PMF. Based on the potential for downstream loss of life, the spillway design flood has been selected as the PMF. The spillway and reservoir are capable of controlling approximately 80% of the PMF without overtopping the embankment (low spot). Based on criteria established by the Corps of Engineers, the spillway is termed inadequate.
Download or read book National Dam Inspection Program Recreation Dam NDS ID Number PA 00446 PennDER ID Number 14 26 Susquehanna River Basin Cold Stream Centre County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1979 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recreation Dam is an L-shaped earth dam with a measured maximum height of 14.7 feet and a total length of approximately 1,600 feet. The facility is provided with a masonry spillway at the left abutment along its northern section and a diversion canal along its easterly extension. The latter serves to divert acid mine drainage from upstream mined areas around the facility. Based on visual observations, past history, and a hydrologic and hydraulic investigation, the dam and its appurtenances are considered in poor condition. Based on a visual evaluation and past performance the spillway system is considered structurally unsafe but of non-emergency status as the reservoir is completely drawn down. In addition, evaluation of the flashboard system indicated that failure of the flashboards under normal operating procedures could in itself cause serious downstream consequences.
Download or read book National Dam Inspection Program North Fork Dam NDS ID Number PA 28 DER ID Number 53 57 SCS ID Number PA 406 Susquehanna River Basin White Branch of North Fork Potter County Pennsylvania Phase I Inspection Report written by Kuang-hwei Chuang and published by . This book was released on 1979 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: North Fork Dam is a homogeneous earthfill dam 622 feet long and 58 feet high. The principal spillway is a two-stage drop inlet spillway with a 30' diameter reinforced concrete pipe. The riser unit is 2.5 feet by 7.5 feet and is 33 feet high. The emergency spillway is located on the left abutment and is formed by a trapezoidal shaped open cut in glacial sand clay and gravel. The bottom width of the spillway channel is 100 feet. The spillway exit channel is 482 feet long and discharges on the left hillside below the toe of the dam. The inspection and review of data of North Fork Dam did not reveal any problems which require emergency action. The dam appears to be stable, well maintained, safely operated and in good condition. However, the spillway and reservoir are capable of controlling 60% of Probable Maximum Flood without overtopping the earth embankment. Based upon criteria established by the Corps of Engineers, the spillway is termed inadequate, but not seriously inadequate. In addition, the earth berm in the emergency spillway exit channel is low and overtopping of the berm during flood conditions will cause erosion of the embankment/abutment contact. This spillway berm will be overtopped at approximately 25% of the PMF.
