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National Dam Inspection Program. Marguerite Dam (NDI ID Number PA-455, DER ID Number 65-16), Ohio River Basin, Branch Sewickley Creek, Westmoreland County, Pennsylvania. Phase I Inspection Report
The assessment of Marguerite Dam is based upon visual observations made at the time of inspection, review of available records and data, hydraulic and hydrologic computations and past operational performance. Marguerite Dam appears to be in fair condition and poorly maintained. The stability of the structure is questionable due to the steep downstream slope and the existance of seepage on the downstream slope adjacent to the right spillway wall (left abutment). The masonry wall located along the upstream face of the dam is collapsing in sections and falling into the reservoir. Cracking of the masonry wall at the right of the approach to the spillway is occurring, and should be repaired. Brush and small trees have been allowed to grow unchecked along the entire downstream slope of the dam. The entire area along the downstream toe of the dam is wet, and ponding is occuring in the area of the valve pit at the downstream toe. Positive drainage for the ponding should be provided. Seepage noted during the inspection was measured to range from 10 to 15 gallons per minute. The drainline valve is located at the downstream toe of the dam which is considered a deficiency.
National Dam Inspection Program. Marguerite Dam (NDI ID Number PA-455, DER ID Number 65-16), Ohio River Basin, Branch Sewickley Creek, Westmoreland County, Pennsylvania. Phase I Inspection Report
The assessment of Marguerite Dam is based upon visual observations made at the time of inspection, review of available records and data, hydraulic and hydrologic computations and past operational performance. Marguerite Dam appears to be in fair condition and poorly maintained. The stability of the structure is questionable due to the steep downstream slope and the existance of seepage on the downstream slope adjacent to the right spillway wall (left abutment). The masonry wall located along the upstream face of the dam is collapsing in sections and falling into the reservoir. Cracking of the masonry wall at the right of the approach to the spillway is occurring, and should be repaired. Brush and small trees have been allowed to grow unchecked along the entire downstream slope of the dam. The entire area along the downstream toe of the dam is wet, and ponding is occuring in the area of the valve pit at the downstream toe. Positive drainage for the ponding should be provided. Seepage noted during the inspection was measured to range from 10 to 15 gallons per minute. The drainline valve is located at the downstream toe of the dam which is considered a deficiency.
National Dam Inspection Program. Marguerite Dam (NDI ID Number PA-455, DER ID Number 65-16), Ohio River Basin, Branch Sewickley Creek, Westmoreland County, Pennsylvania. Phase I Inspection Report
R. J. Kimball (author)
1981
76 pages
Report
No indication
English