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Author: United States. Army. Corps of Engineers. St. Louis District
Publisher:
Published: 1978
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOK →Author: ARMY ENGINEER DISTRICT ST LOUIS MO.
Publisher:
Published: 1978
Total Pages: 27
ISBN-13:
DOWNLOAD EBOOK →Lake Lorraine dam is an earth-fill dam with a notch spillway in the right abutment. The spillway is cut into a combination of earth and rock, and is paved with unreinforced concrete. The outlet works is a 30-inch corrugated metal pipe; this pipe is blocked on the upstream side with a piece of plywood and also a metal plate. The metal plate could not easily be removed in time of emergency. The inspection team visually observed animal burrows and a thick cover of brush and small trees on the downstream slope. The upstream slope has a lesser but appreciable brush cover. Our evaluation of the spillway size indicates that it does not meet the criteria in the guidelines.
Author: United States. Army. Corps of Engineers. St. Louis District
Publisher:
Published: 1978
Total Pages: 94
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Army. Corps of Engineers. St. Louis District
Publisher:
Published: 1978
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOK →Author: Henry M. Reitz
Publisher:
Published: 1978
Total Pages: 47
ISBN-13:
DOWNLOAD EBOOK →Fon-du-lac Subdivision Dam was inspected by an interdisciplinary team of engineers. 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. Failure would threaten the life and property of ten families and cause appreciable damage to two county roads. Our inspection and evaluation indicates the dam is deficient in that the spillway is inadequate. The guidelines for a dam having the above size and hazard potential require that the spillway be capable of passing a one-half PMF (Probable Maximum Flood). 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 reasonably possible in the region. Considering the small volume of water impounded, the large floodplain downstream and the three groups of farm buildings downstream, one-half PMF is the appropriate spillway design flood. A 20% PMF will begin to overtop the dam. The lake and spillway are adequate to contain a 1% annual probability flood (100-year flood) without overtopping the dam.
Author: United States. Army. Corps of Engineers. St. Louis District
Publisher:
Published: 1978
Total Pages: 62
ISBN-13:
DOWNLOAD EBOOK →Author: Henry M. Reitz
Publisher:
Published: 1978
Total Pages: 51
ISBN-13:
DOWNLOAD EBOOK →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. This dam has been classified as unsafe, non-emergency by the St. Louis District as a result of the application of the following criteria: (1) Spillway will not pass 15 percent of the Probable Maximum Flood; (2) Overtopping could result in dam failure; and (3) DAm failure significantly increases the hazard to loss of life downstream.
Author: HORNER AND SHIFRIN INC ST LOUIS MO.
Publisher:
Published: 1979
Total Pages: 73
ISBN-13:
DOWNLOAD EBOOK →Based on the visual inspection, the present general condition of the dam is considered to be satisfactory. The following deficiencies were noticed during the inspection and are considered to have an adverse effect on the overall safety and future operation of the dam. A minor collection of floating debris is lodged within the drop inlet spillway structure at the upstream end of the outlet pipe. An accumulation of debris within the spillway structure can obstruct the outlet pipe resulting in a loss of discharge capacity and unwarranted flooding of the lake. Several beaver dams exist within the downstream channel between the dam and the juncture of the channel with Cliffdale Hollow, a distance of about 1,000 feet. Damming of the channel is believed to be responsible for the tailwater pool that lies adjacent to the downstream toe of the dam. In addition, the outfall channel that lies between the outfall structure and the downstream channel is partially obstructed by small trees and brush.
Author: United States. Army. Corps of Engineers. St. Louis District
Publisher:
Published: 1978
Total Pages: 78
ISBN-13:
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