National Dam Safety Program. Hickory Hollow Lake Dam (MO-31068). Mississippi - Kaskaskia - St. Louis Basin, Perry County, Missouri. Phase I Inspection Report.
Abstract
The following summarizes the findings of the visual inspection and the results of certain hydrologic/hydraulic investigations performed under the direction of the inspection team. Based on the visual inspection and the results of the hydrologic/hydraulic investigations, the present general condition of the dam is considered to be somewhat less than satisfactory. The following deficiencies were noticed during the inspection and are considered to have an adverse effect on the overall safety and future operation of the dam: (1) The upstream face of the dam has a grass cover to protect the slope from erosion. A grass covered slope is not considered adequate to prevent erosion by wave action or by fluctuations of the lake surface level; (2) A dense cover of small-to-medium size trees and brush that may contain animal burrows exists on the downstream face at the center and left sides of the dam. Several large willow trees are present within the reservoir area just upstream of the left side of the dam; (3) At the time of the inspection the turf cover on the upstream and downstream faces of the dam was approximately 3 feet high. Uncut grass on the dam is an indication of lack of regular maintenance; and (4) Erosion, apparently due to storm water runoff, has created a small gulley approximately 3 feet deep and 8 feet wide at the intersection of the downstream side of the dam and the right abutment. A small slough approximately 1.5 feet high and 5 feet wide, also exists at the downstream face near the right side of the dam. Continued erosion and sloughing of the embankment could be detrimental to the stability of the dam.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1980
- Accession Number
- ADA104724
Entities
People
- Albert B. Becker Jr.
- Harold B. Lockett