Head Of Chattooga River Dike 5 Reservoir Report

Last Updated: December 5, 2025

Head of Chattooga River Dike 5, also known as Riegal Diversion Dike, is a flood risk reduction structure located in Trion, Georgia.


°F

°F

mph

Wind

%

Humidity

Summary

Constructed in 1975 by the USDA NRCS, this earth dam stands at a height of 6 feet and spans a length of 950 feet along the Riegal Mill Creek. Despite its modest size, the dam serves a critical purpose in mitigating flood risks in the area, as indicated by its high hazard potential.

The dam, under the jurisdiction of the Nashville District of the US Army Corps of Engineers, lacks modern features such as outlet gates or a controlled spillway, relying instead on an uncontrolled spillway type. While it has not undergone recent condition assessments, its last inspection in 2009 revealed a moderate risk level. Despite the lack of detailed risk management measures or emergency action plans, the structure remains essential for flood protection in Chattooga, Georgia.

Water resource and climate enthusiasts can appreciate the importance of Head of Chattooga River Dike 5 in safeguarding the local community from potential flooding events. As a key component of the flood risk reduction system in the region, this dam serves as a reminder of the ongoing efforts to manage water resources and protect against natural disasters. The data surrounding this structure offers valuable insights into its design, construction, and maintenance practices, highlighting the critical role it plays in maintaining the safety and resilience of the surrounding area.

Year Completed

1975

Dam Length

950

Dam Height

6

River Or Stream

Riegal Mill Creek

Primary Dam Type

Earth

Drainage Area

3.6

Hazard Potential

High

Nid Height

6
       
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.