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West Fork Eno Reservoir Expansion: Phase II

Reservoir Expansion
The Phase II expansion of the reservoir will raise its 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 will increase 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.

The West Fork Eno Reservoir expansion is the second phase of the town’s reservoir, which was planned in the 1990s. Construction of the first phase ― the building of the reservoir on the west fork of the Eno River in Cedar Grove ― began in 1998 and was completed in 2000. Phase II work will expand the reservoir’s volume for expected future demand by raising the normal water elevation by 10 vertical feet. The project’s planning stages began in 2013. Construction was started in April 2018. The expansion includes related clearing, road and bridge projects. The project is expected to be complete by December 2020.