National Dam Inspection Program. Bayly Pond Dam (NDI ID Number PA-00343, DER ID Number 64-205), Delaware River Basin, Branch of Holbert Creek, Wayne County, Pennsylvania. Phase I Inspection Report

The Bayly Pond Dam is judged to be in good structural condition based on the visual inspection. Based on the location of the downstream dwellings and the fact that a few lives could be lost should the dam fail, the dam is classified as a significant hazard dam. Based on criteria established for these studies, the recommended Spillway Design Flood (SDF) varies between the 100-year flood and 1/2 of the Probable Maximum Flood (1/2 PMF). Because of the small reservoir storage capacity, the 100-year flood was selected for the SDF. Since the spillway cannot the 100-year flood without overtopping the dam, the spillway is rated as inadequate. The following investigations and remedial measures are recommended for immediate implementation by the owner. All investigations and design of remedial measures should be performed under the direction of a Professional Engineer, experienced in the design and construction of dams. (1) Increase the spillway capacity to pass at least the 100-year flood flow without overtopping and the dam and the dike. (2) Stabilize the upstream face of the dam against wave erosion. (3) Verify the operational condition of the intake valve and provide other means to draw down the reservoir level in emergencies, should the valve be found inoperative. (Author)