N&S Mill Creek No.16 Reservoir Report

Last Updated: December 5, 2025

N&S Mill Creek No.16, also known as Gum Hollow, is a crucial earth dam located in Grant, West Virginia, designed by the USDA NRCS in 1984 for flood risk reduction.


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Summary

This dam stands at a height of 67 feet with a hydraulic height of 61 feet, serving its primary purpose effectively. With a normal storage capacity of 47 acre-feet and a drainage area of 0.09 square miles, this structure plays a vital role in managing water resources in the region.

Managed by the local government and regulated by the West Virginia Department of Environmental Protection, N&S Mill Creek No.16 has a high hazard potential but is currently deemed to be in satisfactory condition based on the last inspection in 2015. Although the dam is uncontrolled in terms of spillway and outlet gates, it meets regulatory standards and has a moderate risk rating of 3. With a strong foundation of rock and soil, this dam stands as a testament to effective flood risk reduction strategies implemented in the region.

Overall, N&S Mill Creek No.16 serves as a vital component of water resource management in the area, providing both flood risk reduction and water storage capabilities. With its strategic location and effective design, this dam stands as a symbol of successful collaboration between the USDA NRCS, local government, and regulatory agencies to ensure the safety and resilience of the surrounding communities in the face of changing climate conditions.

Year Completed

1984

Dam Length

549

Dam Height

67

River Or Stream

GUM HOLLOW

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

61

Drainage Area

0.09

Nid Storage

271

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

67
       
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.