National Dam Safety Program. Oswald Dam (MO 11031), Missouri - Nemaha - Nodaway Basin, Atchison County, Missouri. Phase I Inspection Report.
Abstract
The dam is an earthfill structure approximately 155 feet long and 40 feet in height. It is located in a deeply incised gully in the deep loess hill country adjacent to the Missouri River Valley in northwestern Missouri. The principal spillway consists of a 24-inch diameter steel pipe with a hood inlet which passes through the embankment on an angle of about 30 deg to the centerline of the dam. A vegetated earth emergency spillway is cut through the abutment on the left (north) end of the dam. The bottom width of the spillway is 25 feet. A vegetated earth emergency spillway is cut through the abutment on the right (south) end of the dam. The bottom width of the spillway is 20 feet. Our inspection and evaluation indicates that the spillway does not meet the criteria set forth in the recommended guidelines for a small dam having a high hazard potential. The spillways will pass 13% of the Probable Maximum Flood without overtopping the dam.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1979
- Accession Number
- ADA105886
Entities
People
- Garold Ulmer
- Gordon Jamison
- Harold P. Hoskins
- Rey S. Decker