Upper Green River Frs No 4 Reservoir Report
Last Updated: December 6, 2025
Upper Green River FRS No 4, located in Lincoln County, Kentucky, is a critical flood risk reduction structure designed by the Soil Conservation Service of USDA/NRCS and completed in 1959.
°F
°F
mph
Wind
%
Humidity
Summary
This earth-type dam stands at 45 feet tall with a length of 400 feet, providing storage of 229 acre-feet and serving the primary purpose of flood risk reduction along the South Fork Green River. Despite its low hazard potential, the dam has a moderate risk assessment rating of 3, indicating the need for ongoing monitoring and management.
Managed by the Kentucky Division of Water, Upper Green River FRS No 4 is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and safety. The dam has not been rated for condition assessment, and emergency action preparedness measures are not currently documented. However, with a regular inspection frequency of 5 years, the dam remains a vital component in the flood risk reduction strategy for the area. Its location in SOUTH FORK and association with the Nashville District of the USACE highlight its significance in water resource management and climate resilience efforts in the region.
Water resource and climate enthusiasts will appreciate the engineering and design details of Upper Green River FRS No 4, as well as its contribution to mitigating flood risks along the South Fork Green River. The dam's historical construction and ongoing regulatory oversight by the Kentucky Division of Water underscore the importance of effective flood control infrastructure in safeguarding communities and ecosystems. As a key component in the region's water management system, Upper Green River FRS No 4 serves as a reminder of the critical role of sustainable water resource practices in adapting to changing climate conditions and ensuring resilience in the face of environmental challenges.
Year Completed |
1959 |
Dam Length |
400 |
Dam Height |
45 |
River Or Stream |
SOUTH FORK GREEN RIVER |
Primary Dam Type |
Earth |
Surface Area |
2.6 |
Drainage Area |
0.89 |
Nid Storage |
229 |
Hazard Potential |
Low |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Green River Near Mckinney
|
5cfs |
Dix River Near Danville
|
291cfs |
Buck Creek Near Shopville
|
90cfs |
Kentucky River At Lock 8 Near Camp Nelson
|
3830cfs |
Rockcastle River At Billows
|
586cfs |
Kentucky River At Lock 7 At Highbridge
|
5960cfs |
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.
Upper Green River Frs No 4
William Whitley State Historic Site
Dix River Wildlife Management Area
Indian Lakes Park