DTIC ADA1047376: National Dam Safety Program. Stubblefield pdf

DTIC ADA1047376: National Dam Safety Program. Stubblefield_bookcover

DTIC ADA1047376: National Dam Safety Program. Stubblefield

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Our inspection and evaluation indicates that the combined spillways do not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The combined spillways will pass 30 percent of the Probable Maximum Flood without overtopping. The Probable Maximum Flood is defined as the flood discharge that may be expected from the most severe combination of critical meteorologic and hydrologic conditions that are reasonably possible in the region. The guidelines require that a dam of small size with a high downstream hazard potential pass 50 to 100 percent of the PMF. Considering the low height of the dam and the small storage capacity, 50 percent of the PMF has been determined to be the appropriate spillway design flood. The 1 percent probability flood will not overtop the dam. The 1 percent probability flood is one that has a 1 percent chance of being exceeded in any given year.

Deficiencies visually observed by the inspection team were: scattered trees and brush on both the upstream and downstream face; lack of wave protection for the upstream embankment face; minor erosion at the left downstream dam-abutment contact; minor slough above the outlet of the drawdown pipe; and possible seepage area beyond the downstream toe on the left side of the valley. Another deficiency was the lack of seepage and stability analysis records

  • Creator/s: Defense Technical Information Center
  • Date: 12/1/1980
  • Year: 1980
  • Book Topics/Themes: DTIC Archive, , ANDERSON ENGINEERING INC SPRINGFIELD MO, *EARTH DAMS, STABILITY, HYDROLOGY, DEFICIENCIES, SAFETY, VISUAL INSPECTION, FLOODING, RESERVOIRS, MISSOURI

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