On September 25th, 2012, an engineer from Gomez and Sullivan inspected the dam. In late October the Tri-Town Committee received their report.
What the Report Concludes
- The dam is in generally poor condition.
- A significant amount of water is flowing through a horizontal crack on the face of the auxiliary spillway. (the portion of the dam north of the house)
- Much of the concrete on the downstream face has fallen off.
- The principal spillway is in good condition. (dam south of house)
- The deterioration of the concrete on the auxiliary spillway poses a structural risk, because freeze/thaw cycles can accelerate the deterioration and lead to failure.
- Proper repair would cost so much that “reconstruction of a sound structure would provide the best investment.”
- Remedial measures should be taken within 1-2 years to repair or reconstruct the auxiliary spillway.
Additional studies will be needed prior to determining the best solution:
- Location of new dam; (might not be present location)
- Location of cofferdam needed during construction;
- Subsurface investigation; (where is ledge, consolidated fill, etc)
- Topographic survey;
- Hydrologic and hydraulic analysis – gallons per minute under 100 year flood conditions required for State permit.