Download or read book National Program of Inspection of Non Federal Dams Tennessee Jennings Creek Watershed Dam Number 15 Inventory Number TN 08705 Cumberland River Basin Near North Springs Jackson County Tennessee Phase I Investigation Report written by William Culbert (Jr) and published by . This book was released on 1981 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a linear earthen structure 310 feet long and 44.7 feet high with a crest width of 14 feet. The upstream and downstream slopes are 2.6H:1V and 2.5H:1V respectively. The embankment is free of undesirable vegetation except for some scattered 1/2 - 2 in. diameter heavenwood trees. Most of these are at the downstream right toe and abutment tie-in. No signs of sliding, cracking, or differential settlement were observed on the dam or in the area immediately downstream. Erosion was insignificant. On the basis of a federal hazard potential classification of 'high' and an 'intermediate' size classification, the dam should pass the full Probable Maximum Flood (PMF) of 28.5 in. of rain falling in 6 hours. Analysis reveals that the dam will overtop by about 3.4 ft. for 1.8 hours during this storm. The 1/2 PMF will also overtop the structure. The dam received a condition classification of 'significantly deficient' because of its spillway limitations. It is recommended that a qualified engineer be engaged to develop project modifications that will allow the dam to pass the PMF and that the owner perform various maintenance operations.
Download or read book National Program of Inspection of Non Federal Dams Tennessee Inventory Number TN 11101 Cumberland River Basin Jennings Creek Watershed Dam Number 16 Near North Springs Macon County Tennessee Phase I Investigation Report written by William Culbert (Jr) and published by . This book was released on 1981 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a linear earthen structure 325 feet long and 47.1 feet high with a crest width of 13 feet. The upstream and downstream slopes are 2.4H:1V and 2.7H:1V respectively. It is in the intermediate size and high ahzard potential classifications. The lake area is 7 acres at normal pool, increasing to 23 acres at the top of the dam. The service spillway is a 2 ft x 6 ft (inside diameter) concrete riser with a 15-in. steel cylinder concrete pipe. The drawdown consists of a 16-in. diameter formed opening feeding into the riser controlled by a 24-in. slide headgate. The emergency spillway is an open channel excavated in rock at the right side of the embankment. It has a base width of 25 feet and is trapezoidal in shape. The dam is well grassed and free of undesirable vegetation. Its slopes are uniform and well defined and exhibit no signs of structural instability. Some minor erosion exists on the downstream slope in two areas where construction equipment and 4-wheel drive vehicles have destroyed the grass cover. No cracks, signs of seepage, sliding, or differential settlement were observed on the dam or in the area immediately downstream. The dam is given a safety classification of 'significantly deficient' because of its spillway limitations. It is recommended that a qualified engineer be engaged to develop project modifications that will allow the dam to pass the PMF, and that the owner perform various maintenance operations. (Author).
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1982-04 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase 1 Investigation Report written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase 1 Investigation Report written by and published by . This book was released on 1980 with total page 0 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 1982 with total page 1220 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Phase 1 Investigation Report written by and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phase 1 Investigation Report written by and published by . This book was released on 1981 with total page 0 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 1982 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jennings Creek Flood Retarding Dam No 10 written by and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Program of Inspection of Non Federal Dams Tennessee Sweetwater Creek Watershed Dam Number 15 Inventory Number TN 12314 Tennessee River Basin Near Sweetwater Monroe County Tennessee Phase I Investigation Report written by George E. Moore and published by . This book was released on 1981 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dam is located in Monroe County about 0.7 miles southwest of Sweetwater, Tennessee and is an earthfill embankment 46 feet high and 1100 feet long. The crest width is 19 feet. The embankment slopes are 1V:3H and berms are located on both the upstream and downstream slopes. The dam controls a 1005 acre drainage area and is intended to impound the 9.4 acre Sherman F. Owen Lake. The service spillway is a 2 stage standard SCS cast in place concrete riser leading to a 30-inch diameter reinforced concrete pipe. The service spillway outlet has an SCS standard baffled impact basin. The drawdown drain is a 24-inch diameter orifice controlled by a slide gate at the base of the riser. The emergency spillway is an uncontrolled earth saddle on the left abutment. The channel has a trapezoidal cross-section with a 200 foot base and 1V:3H side slopes. The reservoir has a leak which has prevented filling of the lake and is apparently due to an open solution channel that is draining into another watershed. The leak is not expected to affect the structural stability of the dam. No indications of instability were observed. The Dam is in the intermediate size category and has a downstream hazard potential classification of high under Corps of Engineers criteria and 1 under State criteria. On the basis of hydraulic analysis, the dam has adequate storage/spillway capacity to pass the probable maximum flood (PMF) under antecedent moisture condition II (AMC II). Under OCE guidelines, a dam in the intermediate size and high hazard potential classification is required to pass the PMF. (Author).
Download or read book National Program of Inspection of Non Federal Dams Tennessee McNairy Cypress Creek Watershed Dam Number 17 Inventory Number TN 10908 Tuscumbia River Basin Near Selmer McNairy County Tennessee Phase I Investigation Report written by George E. Moore and published by . This book was released on 1981 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: McNairy Cypress Creek Dam Number 17 is located in McNairy County, Tennessee, about 0.5 miles east of Selmer. The dam is an earthfill embankment 34.1 feet high and 960 feet long with a crest width of 15 feet. The dam impounds a 13 acre lake. McNairy Cypress Creek Dam Number 17 is in the small size category and has a downstream hazard potential classification of 'high' under OCE guidelines and category 1 by the State of Tennessee. On the basis of hydraulic analysis, the dam has adequate storage/spillway capacity to pass the 1/2 probable maximum flood (PMF) under antecedent moisture condition III (AMC III). The 1/2 PMF is the minimum storm required under OCE guidelines for a dam in the small size and high hazard potential classifications. At this time, the dam is considered not deficient. It is recommended that any erosion be repaired and a soil binding grass cover established on the embankment.
Download or read book National Program of Inspection of Non Federal Dams Tennessee Cumberland Springs Lake Dam Inventory Number TN 12701 Elk River Basin Near Lynchburg Moore County Tennessee Phase I Investigation Report written by William E. Bush and published by . This book was released on 1981 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cumberland Springs Dam has an 8.3 acre lake and is located near the head of Hurricane Creek in Moore County, Tennessee. The concrete gravity structure has a maximum constructed height of 33 feet and a length of 192 feet, including a 36 foot long ogee spillway. The spillway section also includes a drawdown pipe that is gated on the upstream face. The concrete dam is reinforced with six buttresses on the downstream face. The exposed surfaces of the buttresses are badly weathered with horizontal cracks 6 inches deep on the vertical faces. A horizontal crack was observed on the downstream face of the dam approximately 10 feet above the foundation sill. This crack appears to be in a construction 'cold' joint. Seeps were found in the east end wall and along the foundation sill between buttresses 1 and 2 and 2 and 3. Numerous springs were flowing immediately below the dam and both abutments. Cumberland Springs Dam is in the small size category and has a downstream hazard potential classification of high by the Corps of Engineers and 'I' by the State of Tennessee. On the basis of hydraulic analysis. Cumberland Springs Dam flood storage (15.8 acre-feet) and emergency spillway are inadequate to safely pass the 1/2 Probable Maximum Flood (PMF), which Office of the Chief of Engineers (O.C.E.) Guidelines specify to be the design flood for a dam in the small size and high hazard potential categories. At this time, the dam is considered 'unsafe-nonemergency'.
Download or read book Jennings Creek Watershed Dam No 17 written by and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Program of Inspection of Non Federal Dams Tennessee Houser Creek Dam Number 2 Inventory Number TN 13114 North Fork Obion River Basin Near Union City Obion County Tennessee Phase I Investigation Report written by William E. Bush and published by . This book was released on 1981 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Houser Creek Dam No. 2 is located in Obion County, Tennessee approximately 2 miles north of Union City, Tennessee. It is an earth fill embankment 26.5 feet high and 1350 feet long and impounds a 23.8 acre lake. The crest width is 14 feet. Facilities for discharge from the reservoir include a concrete service spillway with inside intake dimensions of 9 feet by 3 feet. The riser is 15 feet high located near the center of the impoundment with a 36 inch concrete pipe barrel through the dam. The emergency spillway is located in the left abutment and has a bottom width of 200 feet and side slopes of 1V on 3H. Its depth below the low point of the dam is 4.5 feet. A slide gate is attached to the upstream face of the service spillway at the bottom to draw down the impoundment. (At the time of inspection, this gate was open and the impoundment was drawn down.) The embankment slopes are approximately 1V on 3H on the downstream slope and 1V on 3H on the upstream slope. The lack of proper maintenance was found to be the major problem during the inspection of the Houser Creek Dam No. 2. A dense growth of trees and brush covered both the downstream and upstream slopes of the dam. The concrete riser also showed signs of vandalism with the removal of debris guards. The dense vegetation on the slopes of the dam prevented a close inspection of the conditions of the slope. (Author).
Download or read book National Program of Inspection of Non Federal Dams Tennessee Mary s Creek Dam Number 9 Inventory Number TN 15739 Wolf River Basin Near Cross Roads Shelby County Tennessee Phase I Investigation Report written by William Culbert (Jr) and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dam is a linear earthen structure 678 feet long and 23.7 feet high with a crest width of 10 feet. The upstream and downstream slopes are 1V:3.1H and 1V:3. OH respectively. The structure impounds a 10.5 acre lake at normal pool with 42 acre-feet of storage. At the top of the dam the pool area increases to 18 acres with an impoundage of 148 acre-feet. The drainage area is predominantly farmland, pasture, and woods. It has an average ground slope of approximately 5.7%. The embankment is well grassed and virtually free of undesirable vegetation. It has a relatively uniform cross section with well defined boundaries. Only minor erosion was observed on the embankment, along the upstream slope at the water surface and along the cattle trail traversing the dam.
Download or read book National Program of Inspection of Non Federal Dams Tennessee Coon Creek Dam OFDBA Site 60 6 Inventory Number TN 04508 Obion River Basin Near Lenox Tennessee Dyer County Tennessee Phase I Investigation Report written by Robert Ramsey and published by . This book was released on 1981 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is based on the findings of the Phase I investigation of OFDBA Site 60-6 on February 4, 1981 in accordance with 'Recommended Guidelines for Safety Inspection of Dams' Office of the Chief of Engineers. The earth dam is 54 feet high and 726 feet long with a crest width of 25 feet. At normal pool the dam impounds a 125 acre lake (2137 acre-feet) used for flood control. It is in the intermediate size and high hazard potential category. The downstream slope is 2.6H:1V and the upstream slope is 3H:1V. The embankment has moderate slopes and exhibited no signs of instability or uncontrolled seepage. Erosion is a major problem at this time as indicated by the presence of deep holes and gullies on the upper portion of the embankment and in the emergency spillway. Large holes were also observed below the right toe of the dam near the creek channel. The emergency spillway is a 250 foot wide grassed channel at the left abutment. There was no evidence that the spillway had ever carried flow. The principal spillway is a 36 inch diameter CMP riser with a 30 inch concrete pipe outlet. An 18 inch manually operated headgate is located at the base of the riser and is used to lower the lake level. A hydraulic and hydrologic analysis indicated that the spillway is capable of passing the recommended probable maximum flood (PMF). The dam is classified as 'unsafe non-emergency' due to the erosion on the embankment and the large holes just below the dam.
