Kenall was tasked to restore the Ajies and Daguey Floodwater Retarding Structures (FRS) in Anasco, Puerto Rico, to their original as-built condition. The Ajies Dam, with a height of 56 feet, featured an embankment designed with a core trench and slopes built with a ratio of three horizontal to one vertical. The repairs addressed critical issues such as erosion control for the main dam, rehabilitation of the auxiliary spillway channel, riprap installation on damaged downstream sections, stability and seepage performance evaluation, and recovery of lost storage capacity based on bathymetric data.

The team carried out hydraulic analyses to ensure compliance with Natural Resources Conservation Service standards, utilizing the US Department of Agriculture hydraulic model (SITE) for structural and integrity assessment. Following the evaluations, Kenall proposed three structural rehabilitation alternatives. A 2D HEC-RAS model was developed for hydraulic breach analysis, including inundation maps for infrastructure and LiDAR data with 10 FT by 10 FT cell sizes supported other modeling efforts. Kenall also conducted slope stability, erosion, and seepage analyses on retaining walls, upstream and downstream slopes, and provided construction recommendations for slope repairs and foundations.

Work performed on these projects was completed under the Kenall-Freese & Nichols 8a Mentor-Protégé Joint Venture (KFNI JV).