Los Robles Lake Dam Reservoir Report

Last Updated: December 20, 2025

Los Robles Lake Dam, located in Grimes, Texas, is a privately owned earth dam completed in 1955 for fire protection, stock, and small fish pond purposes.


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Summary

The dam stands at a height of 30 feet and has a length of 760 feet, providing a storage capacity of 170 acre-feet with a normal storage of 130 acre-feet. The dam is associated with TR-Beason Creek and falls under the jurisdiction of the Galveston District of the US Army Corps of Engineers.

Despite its age, Los Robles Lake Dam has not been rated for its condition, and its hazard potential is not available. However, the risk assessment categorizes it as having a high risk level (2). The dam does not have a spillway and is equipped with one outlet gate. While it is not regulated by the state, it does require permitting and inspection as per state requirements.

Water resource and climate enthusiasts may find Los Robles Lake Dam an intriguing subject for further study, given its historical significance and potential risks associated with its condition and management. The dam's role in providing water for fire protection and supporting local ecosystems adds to its importance in the region. Monitoring and maintaining the dam's integrity will be crucial in ensuring the safety and sustainability of water resources in the area.

Year Completed

1955

Dam Length

760

Dam Height

30

River Or Stream

TR-BEASON CREEK

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

30

Nid Storage

170

Structural Height

30

Outlet Gates

None - 1

Hazard Potential

Not Available

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.