Download or read book National Dam Safety Program Robert G Struble Dam NDI PA 00621 PA DER 15 298 SCS PA 431 Delaware River Basin East Branch Brandywine Creek Chester County Pennsylvania Phase I Inspection Report written by O'BRIEN AND GERE ENGINEERS INC PHILADELPHIA PA JUSTIN AND COURTNEY DIV. and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Struble Dam is a zoned earth embankment, approximately 1,500 feet in length with a maximum height of 31 feet. The dam, a multiple purpose structure, was constructed as a portion of the Brandywine Creek Watershed Project. The reservoir has a normal pool storage capacity of 1,025 acre-feet for sediment accumulation and fish and wildlife. The normal pool surface area is 146 acres. An additional storage capacity of 596 acre-feet is utilized for flood water control. The top of dam elevation is 625.5, the crest width is 14 feet, and the side slopes are 3 horizontal to 1 vertical (3H:1V) upstream and 2.5H:1V downstream. A 12-foot wide berm is provided on the upstream face at Elevation 612.8 and the slope is lined with 18-inch thick riprap from the berm to Elevation 618.8. According to the 'As-Built' plans, the upstream and central portions of the embankment are composed of Zone I material, which is classified as a clayey silt. The central portion includes a cutoff trench with a 12-foot bottom width. The downstream shell (to Elevation 615.8) of Zone II material is classified as silty sand. The two zones are separated by a four-foot wide chimney drain which terminates in a drain trench at the downstream toe of the Zone I material.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979-12 with total page 1288 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 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Safety Program Township Line Dam NDI PA 00625 PA DER 15 266 Delaware River Basin East Branch of Chester Creek Chester County Pennsylvania Phase 1 Inspection Report written by John J. Williams and published by . This book was released on 1979 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Township Line Dam is an earth embankment approximately 530 feet long with a height of 34 feet and crest width of 10 feet. The dam, originally constructed to impound and supply water for the Borough of West Chester, is presently being used for recreation, flood abatement and maintenance of a minimum discharge into the East Branch of Chester Creek. The concrete Ogee spillway has a crest width of 50 feet and is located at the south dam abutment. The spillway, for this 'Intermediate' size, 'High' hazard dam, is capable of discharging 48 percent of the PMF without overtopping of the earth embankment. A review of the hydrologic analysis indicates that the embankment would be overtopped by 0.15 feet for about 2 hours during a flood equal to 50 percent of the PMF. It is considered unlikely that the dam would fail during this event; therefore, the spillway is classified as 'Inadequate', but not 'Seriously Inadequate'. Based upon visual observations, review of the information obtained from the Pennsylvania Department of Environmental Resources, Division of Dam Safety, and conversations with the Owner's representative, Township Line Dam is considered to be in fair condition. However, the detection of potentially unstable conditions at this site was severely restricted due to thick vegetation covering the entire embankment. Certain conditions require further investigations, maintenance, or monitoring.
Download or read book National Dam Safety Program Grace Mine Trailings Dam NDI PA00715 PA DER 6 445 Delaware River Basin Tributary to Hay Creek Berks County Pennsylvania Phase I Inspection Report written by O'BRIEN AND GERE ENGINEERS INC PHILADELPHIA PA JUSTIN AND COURTNEY DIV. and published by . This book was released on 1979 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grace Mine Trailings Dam is an earth and rockfill embankment approximately 2,000 feet long with a maximum height of 145 feet. The dam was constructed to impound iron ore tailings slurry pumped from a nearby iron mine operated by the Bethlehem Mines Corporation. The reservoir area provides storage space for the trailings which settle out of the slurry to leave a clear water lake. A homogeneous, impervious earth embankment was originally constructed in 1956-1957 to Elevation 600. Two extension dikes were constructed to Elevation 620 in 1976-1977. These dikes are located several hundred feet to the south of the right abutment. The side slopes were 3 horizontal to 1 vertical (3H:1V) from the base of the dam to Elevation 540 and 2.5H:1V from Elevation 540 to the top of the dam.
Download or read book National Dam Safety Program Angelica Dam NDI PA 00705 DA DER 6 20 Delaware River Basin Angelica Creek Berks County Pennsylvania Phase I Inspection Report written by O'BRIEN AND GERE ENGINEERS INC PHILADELPHIA PA JUSTIN AND COURTNEY DIV. and published by . This book was released on 1979 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Angelica Lake Dam is an earth structure with a masonry retaining wall along the left side (looking downstream) of the downstream face. The embankment is approximately 140 feet in length with a maximum height of 30 feet and a 35-foot top width. A road is built in the crest of the dam at Elevation 228.0. The upstream face of the embankment is variable in slope, ranging from 2.5 horizontal to 1 vertical (2.5 H:1V) between Elevations 203.0 and 213.0 to 1.5H:1V between Elevations 213.0 and 223.0 to 10H:1V between Elevations 223.0 and 228.0. The downstream slope of the embankment is 2H:1V from the spillway to the right abutment. The masonry wall forms the downstream face from the spillway to the left abutment. A broad-crested concrete drop spillway with stone masonry training walls is located near the center of the embankment. The spillway crest is 39 feet wide and has a 25-foot long concrete approach apron. The crest and approach apron are at Elevatrion 213.0. The spillway drop is 15 foot to a downstream concrete apron at Elevation 198.0. The apron is 52 feet long and directs flow into the outlet channel at Elevation 196.0. The masonry training walls extend from the entrance to the approach apron to the discharge point of the outlet apron. A concrete foot bridge crosses above the spillway crest at Elevation 222.0. The outlet works consist of a 20-inch diameter wrought iron pipe through the base of the embankment to the left of the spillway. Control of the pipe is provided by a sluice gate approximately 20 feet upstream of the spillway crest.
Download or read book National Dam Safety Program Upper and Lower Dams NDI Number PA 00389 PennDER Number 20 55 SCS Numbers PA 487A and B Ohio River Basin Crooked Creek Crawford County Pennsylvania Phase I Inspection Report written by BAKER (MICHAEL) JR INC BEAVER PA. and published by . This book was released on 1980 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upper and Lower Dams consist of two dams in series designed by the U.S. Department of Agriculture, Soil Conservation Service (SCS) for floodwater detention and waterfowl habitat enhancement. Lower Dam is the primary structure upon which this report focuses because the majority of Upper Dam becomes inundated by backwater from Lower Dam before the emergency spillways at Lower Dam are activated. Hydraulic/hydrologic evaluations revealed that the spillways will pass the Probable Maximum Flood (PMF) without overtopping Lower Dam. A spillway design flood (SDF) equal to the PMF is required for Lower Dam. Therefore, the spillways are considered 'adequate.' The inspection revealed only one deficiency which should be corrected immediately, namely, the repair of the chipped concrete on the impact basin of Upper Dam.
Download or read book National Dam Safety Program Siegel Marsh Dam NDI Number PA 00015 PennDER Number 25 14 Ohio River Basin East Branch LeBoeuf Creek Erie County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Siegel Marsh Dam was originally constructed as a 9 foot high earth embankment with a single concrete spillway 136 feet long. At a later date, the embankment was raised 1.5 feet, the spillway was raised 3.5 feet, and an additional spillway with a length of 126 feet was added. The impoundment is situated in State Game Lands No. 218 and is used for wildlife propagation. The embankment currently consists of three sections separated by two spillway structures. The spillway currently consists of two trapezoidal shaped, broad-crested concrete weirs separated by an earth embankment. A minimum flow of at least 1.71 c.f.s. out of the reservoir is maintained by a set of stop logs on the left side of the right spillway. All of the stop logs can be removed to drain the reservoir. Hydraulic/hydrologic evaluations revealed that the spillway will pass the 1/2 Probable Maximum Flood (1/2 PMF) without overtopping the dam. A spillway design flood (SDF) in the range of the 1/2 PMF to Probable Maximum Flood (PMF) is required for Siegel Marsh Dam. The 1/2 PMF was chosen as the SDF because the dam is on the low side of the 'Intermediate' size category due to the low height of the embankment. The spillways are therefore considered 'adequate'. The inspection revealed certain items of remedial work which should be performed immediately by the owner.
Download or read book National Dam Safety Program Unnamed Tributary to Harmon Creek NDI Number PA 01123 PennDER Number 63 81 SCS Number PA 485 Ohio River Basin Washington County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: PA 485 is a zoned earthfill embankment with a total length of 630 feet, including the emergency spillway on the left abutment. The height and crest width of the embankment are 78 feet and 14 feet, respectively. The embankment was constructed using three zones of fill material. The principal spillway is a drop-inlet structure consisting of a two stage reinforced concrete riser connected to a 30 inch diameter reinforced concrete outlet pipe. The emergency spillway for the dam is located at the left abutment. It consists of a vegetated trapezoidal channel with a bottom width of 50 feet and 2H:1V side slopes. Hydrologic/hydraulic evaluations revealed that the spillway will pass the Probable Maximum Flood (PMF) without overtopping the dam. A spillway design flood (SDF) equal to the PMF is required for PA 485. The spillway is therefore considered to be 'adequate'. The visual inspection revealed several minor deficiencies which require remedial action by the owners of the dam.
Download or read book National Dam Safety Program Parker Dam NDI Number PA 01126 PennDER Number 17 87 Susquehanna River Basin Laurel Run Clearfield County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parker Dam is classified as a 'Significant' hazard - 'Small' size dam. The dam and reservoir, owned by the Commonwealth of Pennsylvania, Department of Environmental Resources, are used for recreational purposes. The dam and appurtenant structures were found to be in good overall condition at the time of the inspection. A spillway design flood (SDF) in the range of the 100-year flood to the 1/2 Probable Maximum Flood (1/2 PMF) is required for Parker Dam. Since the dam is in the middle of the 'Small' size category according to storage capacity, the 1/2 PMF was selected as the SDF. Hydrologic/hydraulic evaluations, performed in accordance with procedures established by the Baltimore District of the U.S. Army Corps of Engineers, revealed that the available spillway capacity is much greater than the maximum flow expected during the SDF. Therefore, the dam will not be overtopped during the SDF and the spillways are considered to be 'adequate'.
Download or read book National Dam Safety Program F Houston McIlvain Dam Marsh Creek Dam National I D Number 00626 Delaware River Basin Marsh Creek Chester County Pennsylvania Phase I Inspection Report written by John H Frederick (Jr) and published by . This book was released on 1978 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Phase I investigation described in this report was made as part of the National Dam Safety Program. This program is being implemented by the Secretary of the Army, through the Corps of Engineers, in response to the National Dam Inspection Act, Public Law 92-367, dated August 8, 1972. The purpose of this visual inspection was to evaluate existing available records and to judge whether a need exists to implement emergency measures to counteract an existing condition or conditions which constitute hazards to human life or property.
Download or read book National Dam Safety Program Kahle Lake Dam NDI Number PA 00825 Penn DER Number 61 20 Ohio River Basin Mill Creek Venango County Pennsylvania Phase I Inspection Report written by Chuan Yuan Chen and published by . This book was released on 1979 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kahle Lake Dam is a zoned, earthfill embankment with a maximum height of 45 feet and a total length between abutments of 1300 feet. The embankment has a crest width of 19 feet and side slopes of 3H:1V (Horizontal to Vertical) upstream and 2.5H:1V downstream. The upper 10 feet of the upstream slope is provided with 18 inch thick riprap for wave and ice protection. The auxiliary spillway, located in the left abutment, consists of a concrete weir, a concrete chute, and a stilling basin. The weir has an overall length of 81 feet with the crest elevation 6 feet below the top of dam. Flow over the weir discharges into a reinforced concrete chute. The chute width varies from 81 feet at the weir to 60 feet at the stilling basin. The bottom of the chute has a slope of 5H:1V and an overall length of 144.33 feet. Reinforced concrete training walls are provided from the weir to the end of the stilling basin.
Download or read book National Dam Safety Program Treated Water Pond NDI Number PA 01138 PennDER Number 63 91 Ohio River Basin Sawmill Creek Washington County Pennsylvania Phase I Inspection Report written by ACKENHEIL AND ASSOCIATES INC PITTSBURGH PA. and published by . This book was released on 1980 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general condition of the Treated Water Pond is considered to be fair. This assessment is based primarily on visual observations of embankment conditions and lack of information on the structural capacity of conduits through the embankment. The structure is classified as an 'intermediate' size, 'high' hazard dam. Corps of Engineers guidelines recommend the Probable Maximum Flood (PMF) as the Spillway Design Flood for an 'intermediate' size, 'high' hazard dam. The Treated Water Pond's Spillway Design Flood is the Probable Maximum Flood. Spillway capacity is 'adequate' because the non-overtopping flood discharge was found, by using the HEC-1 computer program, to be in excess of 100 percent of the PMF. The visual inspection indicates several minor deficiencies in addition to those requiring further investigation. The deficiencies can be corrected or improved through implementation of the following recommended evaluation, remedial, monitoring and/or maintenance efforts.
Download or read book National Dam Safety Program H B Norton Dam PA No Name No 42 NDI PA 00385 PennDer No 24 35 Ohio River Basin Big Mill Creek Elk County Pennsylvania Phase I Inspection Report written by C. Y. Chen and published by . This book was released on 1979 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The H.B. Norton Dam consists of an earthfill embankment approximately 37 feet high and 675 feet long. A 75-foot wide, concrete ogee spillway is located at the right abutment, and a 150-foot wide emergency spillway is located at the left abutment. Seepage control is provided by a steel core wall comprised of 72-inch by 96-inch by 1/4-inch steel sheets, which are riveted and welded in place. The downstream embankment rises at a slope of 2 horizontal to 1 vertical (2H:1V) to the crest at elevation 1422.4 feet. The upstream slopes rise at 2.5H:1V to elevation 1412 feet and then 2H:1V to the 12-foot wide crest. The upstream face is lined with well-placed sandstone riprap, typically 1- to 2-foot square. The ogee type spillway has a crest elevation of 1415 feet, or 7 feet lower than the top of dam. Approximately 225 feet to the left of the ogee spillway is a concrete screen chamber built into the embankment. The intake consists of two pipes, a 16-inch cast-iron pipe with an invert elevation of 1400 feet and a 36-inch cast-iron pipe with an invert at elevation 1386.0 feet.
Download or read book National Dam Safety Program Ward Run NDI Number PA 01124 PennDER Number 63 75 SCS Number PA 483 Ohio River Basin Washington County Pennsylvania Phase I Inspection Report written by John A. Dziubek and published by . This book was released on 1980 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: PA 483 is a 74-foot high, zoned-earthfill floodwater retarding dam designed by the U.S. Department of Agriculture, Soil Conservation Service (SCS). The dam is owned and operated by the Washington County Commissioners. The dam consists of a 360 foot long embankment, a vegetated earth side channel emergency spillway, and an intake riser and outlet conduit (principal spillway). The dam and appurtenant structures were found to be in good overall condition at the time of the inspection. Hydraulic/hydrologic evaluations revealed that the spillway will pass the Probable Maximum Flood (PMF) without overtopping the dam. PA 483 is a 'High' hazard, 'Intermediate' size dam requiring evaluation for a spillway design flood (SDF) equal to the PMF. Therefore, the spillway is assessed as 'adequate.' The inspection revealed certain items of remedial work which should be performed immediately by the owner.
Download or read book National Dam Safety Program West Carroll Township Water and Sewer Authority Dam Bakerton Dam NDI PA 436 Susquehanna River Basin West Branch Susquehanna River Cambria County Pennsylvania Phase I Inspection Report written by CORPS OF ENGINEERS BALTIMORE MD BALTIMORE DISTRICT. and published by . This book was released on 1978 with total page 65 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 is to determine if the dam constitutes a hazard to human life or property.
