Phase II Inspection of Lake Manatee Dam
Publication: Journal of the Geotechnical Engineering Division
Volume 108, Issue 10
Abstract
Lake Manatee Dam was constructed during the period 1965-1967. The reservoir is the primary water supply for a quarter of a million people in the Bradenton-Sarasota area of Florida. In early 1978, the Jacksonville District Corps of engineers performed a preliminary (Phase I) inspection of the earth dam and appurtenant structures as part of the National Dam Safety Program. The Corps found that the existing spillway did not have sufficient capacity to prevent overtopping during a large storm and that the downstream slope was potentially unstable, due to inadequate seepage control. The Corps classified the dam as large, with a high hazard potential, and recommended that a more detailed investigation be performed. Design calculations and many construction records for the dam were not available. Therefore, the subsequent Phase II investigation was considerably more extensive than would otherwise have been necessary. This investigation indicated that the embankment has a satisfactory factor of safety against slope failure and the concrete spillway has a satisfactory factor of safety against overturning. However, the drain at the toe of the dam was found to be partially plugged, and construction of a new toe drain was recommended. It was also recommended that an emergency spillway be constructed to supplement the existing spillway.
Get full access to this article
View all available purchase options and get full access to this article.
Information & Authors
Information
Published In
Journal of the Geotechnical Engineering Division
Volume 108 • Issue 10 • October 1982
Pages: 1273 - 1287
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Oct 1982
Published online: Feb 11, 2021
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.