Startex Mill Dam 1 Reservoir Report

Last Updated: December 5, 2025

Startex Mill Dam 1, located in Spartanburg, South Carolina, is a privately-owned structure that plays a crucial role in regulating the flow of TR-MAPLE CREEK.


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Summary

This dam stands at a height of 30 feet with a length of 280 feet, providing storage capacity of 720 acre-feet. Despite its significant hazard potential and poor condition assessment, the dam is regularly inspected, with the last assessment conducted in June 2017.

The dam's buttress core type and controlled spillway design highlight its engineering complexity and importance in managing water resources in the area. With a very high risk assessment rating, efforts to mitigate potential risks and ensure public safety are crucial. The dam's location in a high-risk area underscores the importance of ongoing monitoring and maintenance to prevent any potential failures and protect the surrounding communities and environment. As climate change continues to impact water resources, structures like Startex Mill Dam 1 will play a critical role in adapting to changing conditions and ensuring sustainable water management practices.

Dam Length

280

Dam Height

30

River Or Stream

TR-MAPLE CREEK

Surface Area

50

Nid Storage

720

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

30
       
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.