A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
National Dam Safety Program. Lottes Dam (MO 30309) Lower Mississippi - St. Francis Basin, Wayne County, Missouri, Phase I Inspection Report
This dam is classified as a small size dam with a high downstream hazard potential. Failure would threaten the life and property of approximately 7 families downstream of the dam. The spillway does not meet the criteria set forth in the guidelines for a dam having the above mentioned size classification and hazard potential. For its size and hazard category, this dam is required by the guidelines to pass from one-half PMF to PMF. However, considering the high-hazard potential to life and property of approximately seven families downstream of the dam, the PMF is considered the appropriate spillway design. The emergency spillway will only pass 25 percent of the PMF before the dam embankment is overtopped. Because the spillway will not pass 1/2 of the PMF without overtopping but will pass the 10-year frequency flood, the dam is classified as 'unsafe non-emergency'. Other deficiencies visually observed by the inspection team were trees and trash blocking the emergency spillway, and deep erosion in the emergency spillway outfall; trees and bushes on the downstream embankment slope; erosion gullies on the downstream embankment slope; and seepage. Also, the trash rack and 13 inches of bituminous coated corrugated metal pipe were severed from the vertical inlet pipe.
National Dam Safety Program. Lottes Dam (MO 30309) Lower Mississippi - St. Francis Basin, Wayne County, Missouri, Phase I Inspection Report
This dam is classified as a small size dam with a high downstream hazard potential. Failure would threaten the life and property of approximately 7 families downstream of the dam. The spillway does not meet the criteria set forth in the guidelines for a dam having the above mentioned size classification and hazard potential. For its size and hazard category, this dam is required by the guidelines to pass from one-half PMF to PMF. However, considering the high-hazard potential to life and property of approximately seven families downstream of the dam, the PMF is considered the appropriate spillway design. The emergency spillway will only pass 25 percent of the PMF before the dam embankment is overtopped. Because the spillway will not pass 1/2 of the PMF without overtopping but will pass the 10-year frequency flood, the dam is classified as 'unsafe non-emergency'. Other deficiencies visually observed by the inspection team were trees and trash blocking the emergency spillway, and deep erosion in the emergency spillway outfall; trees and bushes on the downstream embankment slope; erosion gullies on the downstream embankment slope; and seepage. Also, the trash rack and 13 inches of bituminous coated corrugated metal pipe were severed from the vertical inlet pipe.
National Dam Safety Program. Lottes Dam (MO 30309) Lower Mississippi - St. Francis Basin, Wayne County, Missouri, Phase I Inspection Report
1979
45 pages
Report
No indication
English