Mtn Lake Dam (Lake Becky) Reservoir Report

Last Updated: December 5, 2025

Mtn Lake Dam, also known as Lake Becky, is a private-owned structure located in Oconee, South Carolina, along Jerry Creek.


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Summary

Built in 1958, this earth dam stands at a height of 38 feet and spans 655 feet in length, creating a reservoir with a storage capacity of 960 acre-feet. The primary purpose of this dam is for recreation, offering a surface area of 70 acres for outdoor enthusiasts to enjoy various water activities.

Despite its fair condition assessment and high hazard potential, Mtn Lake Dam is regulated and inspected by the South Carolina Department of Health and Environmental Control (DHEC). The dam is equipped with spillway structures to manage potential overflow events, ensuring the safety of downstream areas. In the event of an emergency, the dam owners are required to have an Emergency Action Plan (EAP) in place, although details on its preparedness and adherence to guidelines are not specified in the data.

For water resource and climate enthusiasts, Mtn Lake Dam presents an opportunity to explore the intersection of recreational infrastructure and environmental stewardship. As a significant feature along Jerry Creek, this dam showcases how private ownership can contribute to water management practices and the importance of regulatory oversight in ensuring public safety and ecological sustainability. With its historical significance and ongoing maintenance efforts, Mtn Lake Dam serves as a reminder of the delicate balance between human development and natural resource conservation in the face of changing climate dynamics.

Year Completed

1958

Dam Length

655

Dam Height

38

River Or Stream

JERRY CREEK

Primary Dam Type

Earth

Surface Area

70

Nid Storage

960

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

38
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.