National Dam Safety Program. Bethany New City Reservoir Dam (MO 10071), Missouri - Grand - Chariton Basin, Harrison County, Missouri. Phase I Inspection Report

摘要

Bethany New City Reservoir Dam was inspected by an interdisciplinary team of engineers. The purpose of the inspection was to make an assessment of the general condition of the dam with respect to safety, based upon available data and visual inspection, in order to determine if the dam poses hazards to human life or property. Our inspection and evaluation indicates that the spillway does meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The spillway will pass the Probable Maximum Flood without overtopping the dam. The Probable Maximum Flood (PMF) is defined as the flood that may be expected from the most severe combination of critical meteorologic and hydrologic conditions that are reasonably possible in the region. Additional deficiencies, in accordance with the guidelines, are the lack of seepage and stability analysis. These analyses should be obtained in the future. Other deficiencies visually observed by the inspection team were small trees and brush growing on the upstream embankment slope, some trees growing in the spillway channel and erosion of the spillway channel downstream from the sill.