College Lake Dam Stabilization/Removal
Owner: City of Lynchburg
Wetland Studies and Solutions, Inc. (WSSI), working as a sub-consultant, is currently serving as the environmental lead for the College Lake Dam stabilization/removal project. The dam has been identified as “high-hazard” and the team is tasked with evaluating the viability of reinforcing the structure or replacing the dam with a bridge. The project is further complicated by the fact that College Lake is located on privately-held property and the dam serves as the road embankment for a major Lynchburg thoroughfare.
WSSI’s primary responsibility is the evaluation and design of alternatives for restoration of the lake bed in the event that the dam is removed. Regulatory staff are working closely with state and federal regulators to assess impacts to Waters of the U.S. impacts, develop Clean Water Act permit conditions, and evaluate the project in the context of local TMDL and MS4 permits. WSSI staff have developed a natural channel design framework based on the hydrology for the current and future watershed conditions of the 22 square-mile drainage area. In addition, our engineers and landscape architects have worked to bring potential design alternatives to life through renderings of both the design alternatives. These renderings have been critical in conveying design details and information to interested stakeholders at public meetings.
WSSI engineers are currently analyzing sediment transport dynamics, which includes assessing past, present, and future deposition rates; options for dredging operations to allow continued functionality of the lake (now 1/3rd of its original volume); and detailing the implications of dam removal on surrounding infrastructure and ecology.