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 Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 368 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 1979-11 with total page 1064 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 1979 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1979 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Inspection Program Lake Chillisquaque NDS ID Number PA 815 DER ID Number 47 8 Susquehanna River Basin Middle Branch of Chillisquaque Creek Montour County Pennsylvania Phase I Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1979 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Chillisquaque is an earth-fill dam 2000 feet long and 54 feet high. The dam is a zoned earth embankment with a center core consisting of silty clay material and the upstream and downstream portions consisting of weathered shale. The upstream and downstream slopes were constructed at 2.5H:1V with berms at elevation 582.0. The crest of the dam is 12 feet wide and forms an access road at elevation 605.5. The outlet works consist of a concrete control tower connected to two 36 in. steel pipes encased in concrete. The outlet works has a positive upstream shut off in the form of a bulkhead. The flow through these pipes is regulated by a 36 in. sluice gate, an 18 in. cone valve or an 8 in. by pass valve. At the toe of the dam is a valve house to control flow through these pipes. The earthen emergency spillway is located on the left abutment and contains a concrete sill 750 feet long. The spillway discharge channel is 1300 feet long and discharges to a natural stream. (Author).
Download or read book National Dam Inspection Program Beechwood Lake Dam NDS ID Number PA 37 DER ID Number 59 61 SCS ID Number PA 454 Susquehanna River Basin East Beech Woods of Mill Creek Tioga 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: Beechwood Lake Dam is an earthfill dam 1030 feet long and 63 feet high. The embankment is a zoned earth embankment consisting of a center impervious core section with pervious upstream and downstream zones. The principal spillway consists of a 30 inch diameter reinforced concrete pipe with a 2.5 foot x 7.5 foot reinforced concrete riser. The inspection and review of data of Beechwood Lake Dam did not reveal any problems which require emergency action. The dam appears to be stable, well maintained, safely operated and in good condition. Beechwood Lake Dam is a high hazard-intermediate size dam. The spillway design flood is the PMF (Probable Maximum Flood). The spillway and reservoir are capable of controlling the PMF. Based upon the criteria established by the Corps of Engineers, the spillway is termed adequate.
Download or read book National Dam Inspection Program Middle Creek Dam NDI Number PA 00731 DER Number 36 259 Susquehanna River Basin Lancaster County Pennsylvania Phase I Inspection Report written by BERGER ASSOCIATES INC HARRISBURG PA. and published by . This book was released on 1979 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Middle Creek Dam is an earthfill, sheetpile and concrete structure with a total length of about 500 feet. The height of the dam is 18 feet above the streambed with the maximum height of embankment being 10 feet above natural ground. The center half of the structure is a 250 foot long spillway and control structure constructed of two parallel lines of sheetpiling retaining a zoned fill and is capped with concrete. The 15 feet wide control structure is accessible from the left abutment by a walkway. The structure contains a minimum flow sluice gate and a 18-inch by 36-inch drawdown sluice gate. The downstream area, below the vertical drop weir, is protected with an 18-inch thick concrete slab. The spillway is connected with concrete cutoff walls on top of sheetpiles to the earth embankment at the abutments. The top of the dam is 4.0 feet above weir crest.
Download or read book National Dam Inspection Program Lake Louise Dam NDS ID Number PA 558 DER ID Number 40 134 Susquehanna River Basin Suttons Creek Luzerne County Pennsylvania Phase I Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1980 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Louise Dam appears to be in poor condition. Lake Louise Dam is a high hazard small size dam. The spillway design flood is in the range of 1/2 PMF to PMF. The spillway design flood was selected to be the PMF (probable maximum flood) based on downstream potential for loss of life and property damage. The spillway is capable of controlling approximately 45% of the PMF. The dam breach analysis indicated that a significant increase in the downstream potential for loss of life and property damage exists should the dam fail. Based on criteria established by the Corps of Engineers, the spillway is termed seriously inadequate. The spillway exit and entrance channels are in poor condition. The heavy vegetation creates the potential for water infiltration and made visual inspection of the embankment difficult. Lake Louise Dam is classified as an unsafe non-emergency dam.
Download or read book National Dam Inspection Program Lake Susquehanna Dam NDS ID Number PA 00818 DER ID Number 54 177 High Vista Inc Susquehanna River Basin Little Sugarloaf Creek Schuylkill and Luzerne Counties Pennyslvania 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 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection, available records, calculations and past operational performance, Lake Susquehanna Dam is judged to be in good condition. However, the spillway will not pass the Probable Maximum Flood (PMF) without overtopping the dam. If Lake Susquehanna Dam should be overtopped, it would probably fail by embankment erosion. If Lake Susquehanna Dam should fail due to overtopping, the hazard to loss of life downstream from the dam would be significantly increased from that which would exist just prior to overtopping. Based on criteria established for these studies by the Department of the Army, Office of the Chief of Engineers (OCE), the spillway capacity is rated as inadequate. One-half the PMF is less than the spillway capacity; therefore, based on the OCE criteria, the spillway is not rated as seriously inadequate.
Download or read book National Dam Inspection Program Stephen Foster Dam NDS ID Number PA 906 DER ID Number 8 59 Susquehanna River Basin Mill Creek Bradford 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 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stephen Foster Dam is an earthfill dam 500 feet long and 49 feet high. The upstream slope is 3H:1V and covered with riprap to elevation 1085. The core trench is 10 feet wide and averages approximately 5 feet deep. The embankment is homogeneous and contains no distinct zones. The spillway is located on the left (north) abutment. The spillway approach is cut in earth and is trapezoidal in shape. The concrete ogee weir is 80 feet long. The spillway approach channel is approximately 600 feet long. The spillway exit channel is approximately 230 feet long and consists of a concrete lined chute. The drawdown conduit consists of a 48 inch concrete pipe. The drawdown conduit is regulated by a valve located in a control tower in the upstream portion of the embankment.
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.
Download or read book National Dam Inspection Program Lake Nessmuk Dam NDI ID Number PA 00032 DER ID Number 59 66 SCS ID Number PA 601 Susquehanna River Basin Morris Branch Marsh Creek Tioga County Pennsylvania Phase I Inspection Report written by Frederick Futchko and published by . This book was released on 1979 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on visual inspection, available records, calculations and past operational performance, Lake Nessmuk Dam is judged to be in good condition. The existing spillway can pass the Probable Maximum Flood (PMF) without overtopping of the dam. The spillway capacity is rated as adequate. There is a slope stability analysis for the embankment, and it indicates that the embankment has adequate factors of safety. There is no evidence of problems threatening the embankment. The visual inspection (25 July 1979) revealed that it is uncertain that the gate is operational. (Author).
Download or read book National Dam Inspection Program Shickshinny Lake Dam NDS ID Number PA 572 DER ID Number 40 220 Susquehanna River Basin Shickshinny Creek Luzerne County Pennsylvania 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 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shickshinny Lake Dam is an earthfill dam, 365 feet long and 33 feet high. The crest width of the dam is 17 feet. The upstream slope is 3H:1V and the downstream slope is 2.5H:1V. Both the upstream and downstream slopes are grass covered. Some riprap exists on the upstream slope. The principal spillway consists of a reinforced concrete riser and a 30 inch reinforced concrete pipe which passes under the dam. The top of the riser unit is provided with an anti-vortex device. A gate valve is provided on an inlet pipe just inside the riser unit. Based on our hydraulic and hydrologic analysis it was determined that the spillway and reservoir are capable of controlling approximately 52% of the PMF. Based on criteria established by the Corps of Engineers, the spillway is termed inadequate. No major deficiencies were observed during the inspection. Seepage was noted at the left abutment contact and did not appear to be excessive. Erosion was observed at the outlet structure for the spillway and drainline.
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 Lake Walter Dam NDI I D Number PA 0080 DER I D Number 058 135 Susquehanna River Basin Tributary of Messhoppen Creek Susquehanna County Pennsylvania Phase I Inspection Report written by Lawrence D. Andersen and published by . This book was released on 1981 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake Walter Dam is located on Spring Run, approximately one mile upstream of its confluence with Meshoppen Creek in Springville Township, Susquehanna County, Pennsylvania. The condition of Lake Walter Dam is considered to be good. The only significant condition noted which requires further attention is the lack of erosion protection in the emergency spillway discharge channel. The swampy condition at the toe of the dam is not considered to be significant at this time; however, the condition should be monitored to document if seepage is developing.
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.
