West Fork Eno Reservoir Expansion: Phase II

Reservoir Expansion
A girder (support beam) is prepared for installation on Carr Store Road in early April 2021. Improvements to nearby roads were the final work in the reservoir expansion.
Reservoir Expansion
The bridge on Carr Store Road was replaced to allow for a higher level of water in the reservoir. Support beams (girders) were set in early April 2021.
Reservoir Expansion
Improvements to Mill Creek Road were completed in late 2020. They included drainage and vertical alignment improvements.
Reservoir Expansion
The addition of a large diameter cross pipe beneath Mill Creek Road was among the improvements completed in late 2020 for that road as part of the reservoir expansion project.
Reservoir Expansion
The Phase II expansion of the reservoir allows for raising the normal water level by 10 vertical feet.
Reservoir Expansion
The reservoir's Phase I water capacity is 786 million gallons.
Reservoir Expansion
These photos from early April 2019 show progress on the new spillway, which is now complete.
Reservoir Expansion
The spillway is designed with notched weirs, also called piano keys because they resemble the instrument's keys when in use.
Reservoir Expansion
The new spillway design increases the overflow capacity of the existing dam at a lower cost than a traditional free-flow spillway.
Reservoir Expansion
Few existing concrete dams in the United States have this design, which increases the overflow capacity at a lower cost.
Reservoir Expansion
The Phase II expansion project includes clearing land from the area around the reservoir that is to be submerged.
Reservoir Expansion
The Phase II expansion project includes clearing land from the area around the reservoir that is to be submerged.