Cadet No. 2 Dam, I.D. No. 30707 was inspected of the inspection was to assess the general condition of the dam with respect to safety. The assessment is based upon an evaluation of the available data, a visual inspection, and an evaluation of the hydrology and hydraulics of the site in order to determine if the dam poses hazards to human life or property. The dam provides impoundment for barite ore tailings. The results of the inspection and evaluation indicate that the dam does not meet the criteria given in the Guidelines for a dam with the size and hazard potential of Cadet No. 2 Dam. As an intermediate size dam with a high hazard potential, the Guidelines specify that the discharge capacity and/or storage capacity should be capable of safely handling the Probable Maximum Flood (PMF) without overtopping the crest. The PMF is the flood that may be expected from the most severe combination of critical meteorologic and hydrologic conditions that are reasonably possible in the region. It has been calculated that the dam cannot handle a 100-year flood (a flood having a 1 percent chance of being equalled or exceeded in any 1 year) or a 10 year flood (a flood having a 10 percent chance of being equalled or exceeded in any year) without overtopping the dam. It was also estimated that the dam could retain 3 percent of the PMF without overtopping the dam and without significant erosion of the embankment; however, the dam cannot handle 50 percent of the PMF without overtopping and significant erosion.

This dam is classified as being of intermediate size. The St. Louis District Corps of Engineers has classified this dam as having high downstream hazard potential. Failure of this dam could threaten life and property. The results of the inspection indicate an absence of facilities for discharging floodwater, inadequate freeboard, and failure of the dam to meet the criteria given in the Guidelines for a structure with the size and hazard potential of Cadet No. 1 dam.

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.

This report was prepared under the National Program of Inspection of Non-Federal Dams. This report assesses the general condition of the dam with respect to safety, based on available data and on visual inspection, to determine if the dam poses hazards to human life or property. (Author).