Ioni Lake Dam Reservoir Report

Last Updated: December 5, 2025

Ioni Lake Dam, located in Palestine, Texas, is a privately owned structure built in 1952 for irrigation purposes along the Ioni Creek.


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Summary

The dam stands at 28 feet high and spans 930 feet in length, with a storage capacity of 1334 acre-feet. With a surface area of 88 acres and a drainage area of 9.89 square miles, the dam plays a crucial role in water resource management in the region.

Managed by the Texas Commission on Environmental Quality (TCEQ), Ioni Lake Dam has been deemed to be in fair condition as of the last assessment in May 2015. With a moderate risk rating, the dam has a spillway width of 150 feet and a maximum discharge capacity of 10,862 cubic feet per second. Although the hazard potential is not available, the dam is inspected every five years to ensure its structural integrity and operational effectiveness.

Given its role in irrigation and recreation, Ioni Lake Dam serves as a vital water resource for the community while also providing opportunities for leisure activities. With a history dating back to the 1950s, the dam continues to play a significant role in water management efforts in Anderson County, Texas, showcasing the importance of sustainable infrastructure development in the face of changing climate patterns.

Year Completed

1952

Dam Length

930

Dam Height

28

River Or Stream

IONI CREEK

Primary Dam Type

Earth

Surface Area

88

Hydraulic Height

28

Drainage Area

9.89

Nid Storage

1334

Structural Height

28

Outlet Gates

Other Controlled - 1, Uncontrolled - 3

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

28
       
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.