Osborn Lake Dam Reservoir Report

Last Updated: December 26, 2025

Osborn Lake Dam, located in Gregg County, Texas, was completed in 1983 by the USDA NRCS and serves multiple purposes, including recreation and water storage.


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Summary

This private dam, standing at a height of 28 feet, controls the flow of the TR-LITTLE CYPRESS CREEK. Although its spillway type is listed as "None," the dam has a storage capacity of 60 acre-feet, with a normal storage level of 51 acre-feet.

Despite being designated as "Not Rated" in terms of condition assessment, Osborn Lake Dam poses a high risk level. It lacks certain safety features like an Emergency Action Plan (EAP) and inundation maps. The dam, constructed using earth materials with a buttress core type, currently does not have an inspection frequency or hazard potential assessment listed. With the dam's location in a relatively densely populated area, ensuring its safety and maintenance is crucial for the surrounding community and environment.

Water resource and climate enthusiasts will find Osborn Lake Dam an intriguing structure to study and monitor. Its history, purpose, and risk factors provide valuable insights into the complex management of dams for various uses, highlighting the importance of ongoing assessment and maintenance to prevent potential disasters and protect both human lives and natural ecosystems.

Year Completed

1983

Dam Length

404

Dam Height

28

River Or Stream

TR-LITTLE CYPRESS CREEK

Primary Dam Type

Earth

Hydraulic Height

28

Nid Storage

60

Structural Height

28

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

28
       
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.