Wolf Hollow Reservoir Report

Last Updated: December 12, 2025

Wolf Hollow is a private dam located in Williamson, Tennessee, along the West Harpeth River.


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Summary

Built in 1983, this Earth dam serves multiple purposes including fire protection, stock, and small fish pond. With a hydraulic height of 21.2 feet and a structural height of 26.6 feet, the dam has a normal storage capacity of 42 acre-feet and a total storage of 55 acre-feet.

Despite being non-regulated by the state, Wolf Hollow poses a significant hazard potential and has a moderate risk assessment rating. The dam, with a length of 169 feet and a surface area of 5 acres, is designed with an uncontrolled spillway type. While it has not been rated for its condition, the dam undergoes inspections every 5 years to ensure its safety and functionality.

For water resource and climate enthusiasts, Wolf Hollow stands as an example of a privately owned dam contributing to local water management and conservation efforts. Its presence along the West Harpeth River highlights the importance of maintaining and monitoring such structures to mitigate risks and ensure the sustainable use of water resources in the area.

Year Completed

1983

Dam Length

169

River Or Stream

WEST HARPETH RIVER

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

21.2

Drainage Area

0.18

Nid Storage

55

Structural Height

26.6

Outlet Gates

None

Hazard Potential

Significant

Nid Height

27
       
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.