Horse Run No.
Wind
Humidity
1 Dam Mb-42 is a privately owned dam located in Unionville, Morgan County, Ohio. Built in 1952 by the Ohio Power Company, this earth dam stands at a height of 59.9 feet and has a length of 750 feet. Its primary purpose is for tailings, with a normal storage capacity of 225 acre-feet and a maximum discharge capability of 1414 cubic feet per second.
The dam is regulated by the Department of Natural Resources in Ohio and undergoes regular inspections, with the last assessment in October 2018 rating its condition as fair. With a significant hazard potential, the dam has an emergency action plan in place, although details on its adherence to guidelines and risk management measures are not specified in the data. The surrounding area has a drainage area of 2.6 square miles, and the dam impounds Horse Run, a local river or stream, creating a surface area of 27 acres.
Overall, Horse Run No. 1 Dam Mb-42 serves as a vital structure for water resource management in the region, highlighting the importance of private ownership in maintaining and regulating such critical infrastructure. For water resource and climate enthusiasts, this dam presents an intriguing case study of a mid-century earth dam that continues to play a significant role in flood control and water storage in Ohio.
Year Completed |
1952 |
Dam Length |
750 |
Dam Height |
59.9 |
River Or Stream |
HORSE RUN |
Primary Dam Type |
Earth |
Surface Area |
27 |
Drainage Area |
2.6 |
Nid Storage |
2012 |
Hazard Potential |
Significant |
Nid Height |
60 |