National Dam Safety Program. Pertle Springs Lake Dam (MO 20044), Missouri - Kansas City Basin, Johnson County, Missouri. Phase I Inspection Report.
BLACK AND VEATCH KANSAS CITY MO
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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. The dam is classified as a small size dam with a high downstream hazard potential. Whose failure would threaten lives and property. The estimated damage zone extends approximately two miles downstream of the dam. Within the estimated damage zone are one trailer court, one 1-acre lake, and one 20-acre lake. The spillways do not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The spillways will pass neither 50 nor 100 percent of the probable maximum flood without overtopping but will pass 25 percent of the probable maximum flood. The spillways will pass the flood which has a 1 percent chance of occurrence in any given year. The spillway design flood recommended by the guidelines is 50 to 100 percent of the probable maximum flood. Considering the volume of water impounded behind the dam, and the contents of the estimated damage zone, the spillway design flood should be 100 percent of the probable maximum flood. Based on visual observations, this dam appears to be in satisfactory condition.
- Hydrology, Limnology and Potamology
- Civil Engineering