National Program of Inspection of Non-Federal Dams, Tennessee. Candlewood Dam (Inventory Number TN 06928), Hatchie River Basin, Near Saulsbury, Hardeman County, Tennessee. Phase I Investigation Report PDF Download
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Author: George E. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
This report is based on the findings of a Phase I inspection of Candlewood Lake Dam. The zoned earthfill embankment is 43.6 feet high and 800 feet long with a crest width of 24 feet. The dam is in the intermediate size and high hazard potential category. The reservoir has sufficient storage/spillway capacity to safely pass the full PMF. Erosion is evident in the emergency spillway channel, on the embankment abutment contacts, and on the downstream slope. Some indications of dispersive soils were noted on the downstream slope. Also, the downstream slope appeared to be excessively moist and some standing water was seen. Due to these findings, Candlewood Lake Dam is considered to be 'significantly deficient'.
Author: George E. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
This report is based on the findings of a Phase I inspection of Candlewood Lake Dam. The zoned earthfill embankment is 43.6 feet high and 800 feet long with a crest width of 24 feet. The dam is in the intermediate size and high hazard potential category. The reservoir has sufficient storage/spillway capacity to safely pass the full PMF. Erosion is evident in the emergency spillway channel, on the embankment abutment contacts, and on the downstream slope. Some indications of dispersive soils were noted on the downstream slope. Also, the downstream slope appeared to be excessively moist and some standing water was seen. Due to these findings, Candlewood Lake Dam is considered to be 'significantly deficient'.
Author:
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Category : Science
Languages : en
Pages : 1314
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Author: George E. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 223
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Based on the findings of a Phase I inspection of Spring Lake and Old Hickory Lake Dams in Hardeman County; Spring and Old Hickory Lake Dams are in series with each other and with Chancellor Dam upstream. The dams are of similar construction nad have the same owner. Spring Lake Dam is a zoned earthfill embankment 21.5 feet high and 400 feet long with a crest width of 12 feet. The side slopes are 3H;1V upstream and 3.7H:1V downstream. The service spillway is a concrete riser with two 1 ft x r openings leading to a 15 inch concrete pipe passing under the dam. The drawdown drain is a 15 inch diameter gate valve at the base of the riser. The emergency spillway is a trapezoidal earth saddle on the right abutment with an estimated capacity of 3500 cfs. Old Hickory Dam is a zoned earthfill embankment 20.5 feet high and 530 feet long with a crest width of 12 feet. The side slopes are 3.5H:1V upstream and 3.9H:1V downstream. The service spillway is a concrete riser with two 1 x 4 openings leading to a 24 inch concrete pipe passing under the dam. The draw-down drain is a 24 inch gate valve at the base of the riser. The emergency spillway is a trapezoidal earth saddle on the left abutment with an estimated capacity of 4670 cfs. Both dams are in the small size high hazard potential categories. Neither dam shows any overt signs of instability.
Author: George E. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 87
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This report is based on the findings of a Phase I inspection of Chancellor and Son Dam in Hardeman County. The earthfill embankment is 24 feet high and 550 feet long with a crest width of 15 feet. The service spillway is a 36 inch concrete culvert passing through the embankment near the crest. The drawdown drain is a 10 inch corrugated metal pipe with a slide gate at the inlet and a plug in the outlet. The emergency spillway is a triangular earth channel at the left end of the dam. The available data is insufficient to assess the potential affect of the seepage on the embankment. The reservoir has sufficient storage/spillway capacity to pass the PMF, but the embankment portion of the emergency spillway would probably deteriorate rapidly under high stage flows. Also, the service spillway is not properly designed to pass large flows. The spillways are therefore considered to be seriously inadequate. Because of these findings, Chancellor and Son Dam is considered to have a condition classification of 'unsafe nonemergency'.
Author: George E. Moore
Publisher:
ISBN:
Category :
Languages : en
Pages : 106
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This report is based on the findings of a Phase I inspection of Crystal Lake Dam in Hardeman County. The zoned earthfill embankment is 27 feet high and 410 feet long with a crest width of 13 feet. The embankment slopes are 1V:4.3.1H downstream. The dam impounds 63-acre-feet at normal pool level with 36 acre-feet of flood storage. The dam is in the small size, high hazard potential category. Erosion on the downstream slope of the embankment and in the emergency spillway is becoming severe. Some indications of dispersive soils were noted. The reservoir has sufficient storage/spillway capacity to pass the 1/2 PMF overtops the dam by 0.1 feet for 24 hours. Crystal Lake Dam has been assigned a condition classification of 'deficient'.
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Category : Government reports announcements & index
Languages : en
Pages : 1016
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Author:
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ISBN:
Category : Research
Languages : en
Pages : 1220
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Book Description
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.
Author: William E. Bush
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Grand Valley Dam No. 1 is located in Hardeman County, Tennessee several miles east of Hickory Valley, Tennessee and is an earth fill embankment 37 feet high and 1800 feet long. The crest width is 26 feet. Facilities for discharge from the reservoir are located near the south abutment and consist of a concrete service spillway 11 feet by 8 feet with two 9.0 foot by 0.83 feet openings and a 42 inch CM pipe barrel through the dam and an emergency spillway constructed as a low area in the top of the dam. The emergency spillway has gentle side slopes and a 50 foot wide bottom section. The entrance and exit slopes are 1V on 3H on the upstream slope and 1V on 4H on the downstream slope. No protection is provided for the exit slope. The upstream slope is vertical from the waterline for approximately two feet. The slope from that point to the crest is one vertical on three horizontal. The downstream slope is generally one vertical on four horizontal. Both the upstream and downstream slopes have ineffective vegetation. The dam is in the intermediate size category and has a downstream hazard potential classification of high by the USCE and 'I' by the State of Tennessee. On the basis of hydraulic analysis, the dam has flood storage (572 acre-feet) and spillways inadequate to safely pass the Probable Maximum Flood (PMF).
Author: William E. Bush
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Grand Valley Dam No. 2 is located in Hardeman County, Tennessee seven miles east of Hickory Valley, Tennessee and is an earth fill embankment 16 feet high and 560 feet long with a crest width of 22 feet. Facilities for discharge for the reservoir are located in the left abutment and include a 24 inch corrugated metal pipe culvert through the dam, and an emergency spillway cut into the right abutment. This spillway is trapezoidal shaped with a bottom width of 50 feet. A paved road fill crosses the spillway at approximately the location of the control section and effectively cuts off the spillway from use. The embankment slopes are 1 vertical on 3 horizontal from the water line to the top of the dam on the upstream slope. The downstream slope averages 1 vertical on 3 horizontal. The upstream slope is free of undesirable growth and debris but the downstream slope is covered with high grass and small saplings. On the basis of hydraulic analysis, flood storage (95 acre-feet) and spillways are insufficient to safely pass the 1/2 Probable Maximum Flood (PMF) which the Office of the Chief of Engineers (OCE) Guidelines specify to be the design flood for a dam in the small size and high hazard categories. The dam is in the small size category and has a downstream hazard potential classification of high by the USCE and '1' by the State of Tennessee.
Author: William Culbert (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
Woodrun Dams No. 1 (west dam) and No. 2 (east dam) are colinear earthen structures 885 feet and 945 feet long respectively. The impoundments of each structure are interconnected by a channel forming a single 43 acre lake. Dam No. 1 is 27.5 feet in height with a crest width of 15 feet. Its upstream and downstream slopes are 1V:2.5H and 1V:2.8H respectively. Dam No. 2 is 33.2 feet in height with a crest width of 10 feet. Its upstream and downstream slopes are 1V:2.7H and 1V:3.6H respectively. Both dams are uniform in cross section and host no deleterious vegetation. The reservoir has a drainage area of 249 acres. It is predominately wood-land with an average ground slope of approximately 14%. The downstream slope of Dam No. 1 is wet with seepage beginning approximately 20 feet below the crest extending to the toe and becoming attenuated toward the ends of the dam. The seepage area is accompanied by moderate erosion near the maximum section. A property owner has dug a narrow ditch along part of the toe to channel seepage from his land. Pooled seepage exists along much of the channel and a clear flow of approximately 1/2 gpm was observed emanating from its upstream side. Seepage also exists on the downstream slope of Dam No. 2. It extends over a large area beginning approximately 200 feet right of the principal spillway, emerging from the slope 10-15 feet below the dam crest. The dam is not as wet and eroded as Dam No. 1, indicating that seepage is not as profuse. The principal spillway consists of a 30 in. steel pipe riser and a 30 in. outlet culvert of similar construction.
