Buchanan Dam Reservoir Report

Last Updated: December 5, 2025

Buchanan Dam, located in Marble Falls, Texas, is a vital structure along the Colorado River that serves multiple purposes, including hydroelectric power generation, irrigation, and water supply.


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Summary

Completed in 1937, this multi-arch dam stands at a height of 146 feet and has a length of 10,987 feet, providing a storage capacity of 1,180,000 acre-feet. The dam's design by Fargo Engineering Co and Freese and Nichols Inc showcases its innovative engineering and construction to harness the river's resources effectively.

With a normal storage capacity of 992,000 acre-feet and a maximum discharge of 247,800 cubic feet per second, Buchanan Dam plays a crucial role in water management and flood control in the region. The dam's satisfactory condition assessment and regular inspections ensure its continued safe operation. Additionally, the presence of multiple outlet gates and spillways enhances the dam's ability to regulate water flow and mitigate potential risks, further highlighting its importance in ensuring water resource sustainability and climate resilience in the area.

As a state-regulated structure under the Texas Commission on Environmental Quality, Buchanan Dam exemplifies the collaboration between local government and regulatory agencies to oversee its operation, maintenance, and compliance with safety standards. The dam's historical significance, combined with its ongoing role in supporting various water-related activities, makes it a key landmark for water resource and climate enthusiasts interested in understanding the intersection of infrastructure development, environmental stewardship, and community resilience in the face of changing weather patterns and water demands.

Years Modified

1994 - Structural

Year Completed

1937

Dam Length

10987

Dam Height

146

River Or Stream

COLORADO RIVER

Primary Dam Type

Multi-Arch

Surface Area

23060

Hydraulic Height

146

Drainage Area

50.06

Nid Storage

1180000

Structural Height

146

Outlet Gates

Other Controlled - 3, Uncontrolled - 1, Vertical Lift - 3

Hazard Potential

Not Available

Foundations

Rock, Soil

Nid Height

146
       
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.