Boardwalk Reservoir Report

Last Updated: December 6, 2025

Boardwalk is a private dam located in Cumberland, Tennessee, constructed in 1981 across MARTIN BRANCH.


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Summary

It is regulated by the Tennessee Safe Dams Program and has state permitting, inspection, and enforcement in place. With a hydraulic height of 15 feet and a structural height of 25 feet, Boardwalk has a normal storage capacity of 98 acre-feet and a maximum storage of 225 acre-feet. The dam spans 400 feet in length and covers a surface area of 11.5 acres, serving a drainage area of 0.62 square miles.

Despite its low hazard potential and satisfactory condition assessment, Boardwalk is subject to moderate risk, with a risk assessment rating of 3. Regular inspections are conducted, with the last assessment performed in February 2021. The dam has an uncontrolled spillway type and no outlet gates. The surrounding area does not have inundation maps prepared or an emergency action plan in place, indicating room for improvement in risk management measures. Overall, Boardwalk presents an intriguing case study for water resource and climate enthusiasts due to its unique design and risk profile.

Year Completed

1981

Dam Length

400

River Or Stream

MARTIN BRANCH

Primary Dam Type

Earth

Surface Area

11.5

Hydraulic Height

15

Drainage Area

0.62

Nid Storage

225

Structural Height

25

Outlet Gates

None

Hazard Potential

Low

Nid Height

25
       
Seasonal Comparison

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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.