Clementon Lake Dam Spillway Reconstruction

The Clementon Lake Dam sits at the confluence of the Big Timber Creek and Trout Run. Clementon Lake, the associated impoundment, has historically been a recreational lake and today serves as a water source and main attraction for Clementon Park & Splashworld.

Previously, Clementon Amusement Park had investigated the possibility of replacing the dam’s spillway and had preliminary designs developed. These designs were submitted to the State but the owners found that the upgrade would be prohibitively expensive. Clementon Amusement Park then selected Princeton Hydro to develop a more cost-effective design for the spillway redesign and reconstruction.

Based on detailed calculations and hydraulic and structural design, Princeton Hydro engineers recommended redesigning the cross-section of the dam using a reinforced concrete “T-type” cantilever wall, as opposed to the previously recommended semi-circular spillway design. Princeton Hydro’s design also eliminated the need for costly 24-ton timber piles. To protect the downstream stability at the base of the dam, Princeton Hydro also designed a stilling basin. By proposing this unique design, Princeton Hydro was able to significantly reduce the material and construction costs while maintaining the safety of the dam.

Princeton Hydro field engineers provided construction inspection services, field sampling, reinforcing bar inspection, and soil and concrete testing services throughout the construction process.