Rc&D Watershed Structure Y-16 Reservoir Report

Last Updated: December 5, 2025

Rc&D Watershed Structure Y-16, also known as Yellow River Rc&D WS Str.


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Summary

# Y-16, is a vital water management structure located in Gwinnett, Georgia. Owned by the State and regulated by the GA-SAFE DAMS PROGRAM, this earth dam was completed in 1971 with a primary purpose of flood risk reduction. Standing at a height of 38 feet and stretching 355 feet in length, it has a storage capacity of 1415 acre-feet and serves a drainage area of 1733 square miles.

Despite its high hazard potential, Rc&D Watershed Structure Y-16 is rated as having satisfactory condition as of the last assessment in February 2016. With a moderate risk assessment score of 3, the dam is subject to regular inspections every 2 years to ensure its safety and effectiveness in flood control. While the dam has uncontrolled spillways and outlet gates, its design by the Natural Resources Conservation Service has proven to be reliable in managing water flow and reducing the risk of potential flooding in the area.

As a crucial component in water resource management for the region, Rc&D Watershed Structure Y-16 plays a significant role in safeguarding the surrounding communities from potential flood risks. With its strategic location and design, this dam continues to be a key asset in the overall water management infrastructure, highlighting the importance of proactive monitoring and maintenance to ensure its continued effectiveness in flood risk reduction.

Year Completed

1971

Dam Length

355

Dam Height

38

River Or Stream

UNKNOWN

Primary Dam Type

Earth

Surface Area

32

Drainage Area

1733

Nid Storage

1415

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

38
       
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.