Moll Lake Dam, located in Columbia Hills Corners, Ohio, is a private earth dam completed in 1940 with a primary purpose of recreation.
Wind
Humidity
It stands at a height of 32.2 feet and has a storage capacity of 56.8 acre-feet. The dam's reservoir covers an area of 5 acres and drains a watershed of 0.39 square miles, with a maximum discharge rate of 127 cubic feet per second.
Despite its significant hazard potential, Moll Lake Dam is currently in poor condition, as assessed during the last inspection in 2018. The dam is regulated by the Ohio Department of Natural Resources, with permitting, inspection, and enforcement responsibilities falling under the state jurisdiction. The dam poses a potential risk to the surrounding area, prompting the need for a comprehensive risk assessment and management plan to ensure the safety of downstream communities and the integrity of the dam structure.
As a critical component of the local water resource management infrastructure, Moll Lake Dam serves as a recreational hub for the community while also playing a vital role in flood control and water supply management. With its historical significance dating back to the 1940s, efforts must be made to address its poor condition and mitigate any potential risks associated with its operation to safeguard both the environment and public safety.
Year Completed |
1940 |
Dam Length |
275 |
Dam Height |
32.2 |
River Or Stream |
TRIBUTARY TO WEST BRANCH ROCKY RIVER |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
0.39 |
Nid Storage |
56.8 |
Hazard Potential |
Significant |
Nid Height |
32 |