A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
National Dam Inspection Program. Little Youghiogheny River Site Number 1. (NDI I.D. Number MD-44) Ohio River Basin. Cherry Glade Run, Garrett County, Maryland. Phase I Inspection Report
Based on the evaluation of available design information and visual observations of conditions as they existed on the dates of the field reconnaissances, the general condition of Little Youghiogheny Site No. 1 is considered to be good. The wet zone located downstream of the embankment toe is not considered to present significant hazard to dam stability. This wet zone is not believed to be the result of seepage emanating from the dam embankment or foundation. The reservoir drain gate valve is inoperable and judged inadequate in its present condition. Repairs to gate valve, stem shaft, and guides should be made immediately. Little Youghiogheny Site No. 1 is classified as a small size, high hazard dam based on guideline criteria. Soil Conservation Service design calculations indicate that the discharge capacity of the emergency spillway is adequate to pass 100% of PMF without the dam being overtopped. Under these conditions, however, significant erosion of the emergency spillway is believed likely. The emergency spillway is considered adequate to pass runoff resulting from 63% PMF rainfall without significant erosion occuring. A 1/2 PMF to PMF design storm is recommended for this dam facility. The dam and spillways are therefore considered adequate and in accordance with recommended guidelines.
National Dam Inspection Program. Little Youghiogheny River Site Number 1. (NDI I.D. Number MD-44) Ohio River Basin. Cherry Glade Run, Garrett County, Maryland. Phase I Inspection Report
Based on the evaluation of available design information and visual observations of conditions as they existed on the dates of the field reconnaissances, the general condition of Little Youghiogheny Site No. 1 is considered to be good. The wet zone located downstream of the embankment toe is not considered to present significant hazard to dam stability. This wet zone is not believed to be the result of seepage emanating from the dam embankment or foundation. The reservoir drain gate valve is inoperable and judged inadequate in its present condition. Repairs to gate valve, stem shaft, and guides should be made immediately. Little Youghiogheny Site No. 1 is classified as a small size, high hazard dam based on guideline criteria. Soil Conservation Service design calculations indicate that the discharge capacity of the emergency spillway is adequate to pass 100% of PMF without the dam being overtopped. Under these conditions, however, significant erosion of the emergency spillway is believed likely. The emergency spillway is considered adequate to pass runoff resulting from 63% PMF rainfall without significant erosion occuring. A 1/2 PMF to PMF design storm is recommended for this dam facility. The dam and spillways are therefore considered adequate and in accordance with recommended guidelines.
National Dam Inspection Program. Little Youghiogheny River Site Number 1. (NDI I.D. Number MD-44) Ohio River Basin. Cherry Glade Run, Garrett County, Maryland. Phase I Inspection Report
J. D. Hainley (author) / T. E. Debes (author)
1979
64 pages
Report
No indication
English