Florence Dam Reservoir Report

Last Updated: December 5, 2025

Florence Dam, located in Cass County, Texas, was completed in 1969 for the primary purpose of irrigation.


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Summary

This private dam stands at a height of 34 feet and has a length of 1090 feet, providing a storage capacity of 400 acre-feet. It serves the Black Cypress River and supports activities such as irrigation and recreation. The dam is classified as an earth dam with a buttress core type and is not regulated by the state.

Although Florence Dam does not have a spillway, it has one outlet gate and a surface area of 15 acres. The dam's hazard potential is not available, and its condition assessment is not rated. Despite these limitations, the risk assessment indicates a high risk level. With its historical significance in the region and its role in supporting local agriculture, Florence Dam remains a critical water resource for the community. Climate and water resource enthusiasts can appreciate the engineering and environmental impact of this structure in the region.

Year Completed

1969

Dam Length

1090

Dam Height

34

River Or Stream

TR-BLACK CYPRESS

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

34

Nid Storage

400

Structural Height

34

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

34
       
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.