Mckinney Reservoir Report
Nearby: Drew Shack Lake
Last Updated: December 5, 2025
Located in Lawrence, Tennessee, Mckinney is a privately owned earth dam on Tribwolf Creek with a hydraulic height of 12.5 feet and a structural height of 40.9 feet.
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Summary
Completed in 1972, the dam has a storage capacity of 135 acre-feet and serves multiple purposes, including flood control and water supply. With a surface area of 6 acres and a drainage area of 0.11 square miles, Mckinney plays a crucial role in managing water resources in the region.
Despite being classified as having a low hazard potential and a moderate risk assessment, Mckinney has not been rated for its condition assessment. The dam lacks a designated emergency action plan, and its last inspection was conducted in May 2020 with a frequency of every 5 years. The dam features an uncontrolled spillway and is not regulated by the state, raising concerns about its overall safety and maintenance protocols. With no outlet gates and no associated structures, Mckinney stands as a solitary structure in the region.
As water resource and climate enthusiasts continue to monitor and advocate for the sustainable management of dams like Mckinney, it is essential to address the gaps in inspection, maintenance, and emergency preparedness to ensure the safety of surrounding communities and the integrity of the water supply. Collaborative efforts between private owners, state agencies, and local stakeholders are vital in safeguarding against potential risks and enhancing the resilience of critical water infrastructure in the face of changing climate conditions.
Year Completed |
1972 |
Dam Length |
341 |
River Or Stream |
TRIBWOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
12.5 |
Drainage Area |
0.11 |
Nid Storage |
135 |
Structural Height |
40.9 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
41 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek At Iron City
|
422cfs |
Cypress Creek Near Florence Al
|
152cfs |
Big Nance Creek At Courtland Al
|
51cfs |
Elk River At Prospect
|
2960cfs |
Buffalo River Near Flat Woods
|
443cfs |
Horse Creek Near Savannah
|
87cfs |
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.
Mckinney