Second Broad River Watershed #16 Reservoir Report

Last Updated: December 6, 2025

Located in the picturesque Second Broad River Watershed in Bostic, North Carolina, lies Dam #16, a local government-owned structure designed by the USDA NRCS to reduce flood risks along Mountain Creek.


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Summary

Completed in 1979, this earth dam stands at a hydraulic height of 23 feet and a structural height of 64 feet, with a length of 600 feet and a storage capacity of 854 acre-feet. Despite its fair condition assessment in 2019, Dam #16 poses a high hazard potential and is subject to regular state regulation, inspection, and enforcement to ensure public safety.

With a drainage area of 1453 acres and a maximum discharge capacity of 4000 cubic feet per second, Dam #16 serves as a crucial flood risk reduction measure for the local community. Its spillway type is uncontrolled, and it has uncontrolled outlet gates, indicating the need for vigilant monitoring and maintenance. The dam's moderate risk assessment rating highlights the importance of ongoing risk management measures to safeguard against potential emergencies and ensure the structure's continued effectiveness in protecting the surrounding area from flooding events.

In the scenic landscape of Rutherford County, Dam #16 stands as a vital infrastructure asset for water resource management and climate resilience. As a key component of the region's flood control system, this earth dam serves as a testament to the collaborative efforts between local government agencies and the USDA NRCS in safeguarding communities against natural disasters. With its storage capacity, discharge capabilities, and state-regulated oversight, Dam #16 exemplifies the intersection of water resource management, infrastructure resilience, and environmental stewardship in the Second Broad River Watershed.

Year Completed

1979

Dam Length

600

River Or Stream

Mountain Creek

Primary Dam Type

Earth

Surface Area

6

Hydraulic Height

23

Drainage Area

1453

Nid Storage

854

Structural Height

64

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Soil

Nid Height

64
       
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.