Project Scope:

This project will remove and reset the existing southernmost wall panels on the emergency spillway area that help direct flow during flooding events under the vehicular access road. The panels will be removed, realigned, reset and backfilled.

Background:

George Poston Park offers walking and mountain biking trails, athletic fields, a fishing pier, playgrounds, a pump track, picnic shelters, and a lake stocked with fish. Construction of the lake, dam, primary and emergency spillway was completed in 2010. The storm water control system has successfully controlled many heavy storm events over the past 14 years. As part of stormwater control, the dam has a concrete wall structure that directs stormwater flow during flooding events around the dam and safely downstream so that water doesn’t flow over the top of the dam. The structure also allows vehicular traffic to pass during all weather conditions. The dam and spillway are inspected annually by a third party to confirm that the structure is performing as designed. The southernmost emergency spillway wing walls have experienced minor shifting and over the years. This shifting has not impacted the safety and security of the dam since this structure is located at an elevation above full pond. A geotechnical engineering firm was hired to evaluate the wall and provide recommendations for aesthetic repair. This project incorporates those recommendations by removing and realigning the wing wall.