Green River Lock And Dam 1 Reservoir Report
Last Updated: December 13, 2025
Green River Lock and Dam 1, located in Spottsville, Kentucky, is a federal-owned structure managed by the US Army Corps of Engineers.
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Summary
Completed in 1970, the dam serves primarily for navigation purposes along the Green River. It boasts a concrete design with a hydraulic height of 23 feet and a total length of 908 feet, providing essential water management capabilities for the region.
With a normal storage capacity of 41,404 acre-feet and a maximum storage of 62,400 acre-feet, Green River Lock and Dam 1 plays a crucial role in maintaining water levels and managing flood risks in the area. Despite a low hazard potential, the dam is subject to regular inspections and emergency action plan updates to ensure its structural integrity and readiness for any potential emergencies. The US Army Corps of Engineers actively engages with local authorities and the public to raise awareness about the dam and implement risk management measures to safeguard the surrounding communities.
In the face of unpredictable weather events and potential flooding risks, the ongoing monitoring and maintenance efforts by the US Army Corps of Engineers demonstrate a commitment to ensuring the safety and reliability of Green River Lock and Dam 1. As part of a comprehensive approach to dam safety, the management of flood risks and emergency preparedness efforts are continuously reinforced to mitigate any potential threats and protect the environment and communities dependent on the dam's operations.
Year Completed |
1970 |
Dam Length |
908 |
River Or Stream |
GREEN RIVER |
Primary Dam Type |
Concrete |
Surface Area |
3764 |
Length Of Locks |
600 |
Hydraulic Height |
23 |
Drainage Area |
9183 |
Nid Storage |
62400 |
Structural Height |
23 |
Outlet Gates |
None - 0, Uncontrolled - 0 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Green River Lock And Dam 1
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