National Dam Safety Program. Martin Dunham Reservoir Dam (Inventory Number NY. 672), Lower Hudson River Basin, Rensselaer County, New York. Phase I Inspection Report,
Abstract
Examination of available documents and a visual inspection of this dam did not reveal conditions which constitute an immediate hazard to human life or property. However, the dam has some deficiencies which need to be evaluated and remedied. The most serious deficiency noted was a large wet area near the right abutment contact at the downstream toe of the main embankment. The ground in this area was very soft and there was minor sloughing of the embankment slope, as well. Two smaller wet areas were also observed. One of these was near the downstream toe at the left end of the main embankment and the other was beyond the toe of the spillway dike. Investigations into the causes and possible treatments of these wet areas should be commenced within 3 months of the date of notification of the owner. Remedial measures on these areas should be completed within 12 months. The hydrologic/hydraulic analysis performed indicates that the spillway does not have sufficient capacity to discharge the peak outflow from one-half the Probable Maximum Flood (PMF). However, spillway discharges occurring during large storm events will cause water surface elevations in the downstream hazard area to rise to flood levels. A dam failure resulting from overtopping would not significantly increase the hazard to loss of life from that which would exist just prior to an overtopping failure. Therefore, the spillway is assessed as inadequate.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 04, 1981
- Accession Number
- ADA105839
Entities
People
- George W. Koch
Organizations
- New York State Department of Environmental Conservation