National Program of Inspection of Non-Federal Dams, Tennessee. Colonial Country Club - 16th Hole Dam (Inventory Number TN 15774), Wolf River Basin, near Memphis, Shelby County, Tennessee. Phase I Investigation Report

摘要

Colonial Country Club-16th Hole Dam has a 4.5 acre lake and is located in Shelby County, Tennessee in the Countrywood subdivision, and is an earth fill embankment 25 feet high and 344 feet long. The crest varies from 10 feet to 15 feet in width. Facilities for discharge from the reservoir are located in the west abutment and include a timber covered concrete structure with a 5.3 foot by 0.77 foot opening that is located in the emergency spillway ten feet landward from the control section of the emergency spillway. The emergency spillway has a cross-tie weir nine feet long. Excess water not intercepted by the service spillway is carried in a swale located between the toe of the dam and the foundations of two houses. The embankment slopes are one vertical on three horizontal. The upstream slope is partially protected by light riprap. Both the upstream and downstream slopes have undesirable vegetation. The 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, the dam flood storage (15.7 acre-feet) and spillways are adequate to safely pass the 1/2 Probable Maximum Flood (PMF), which 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. (Author)