Leader Lake Saddle Dam Reservoir Report

Last Updated: January 12, 2026

Leader Lake Saddle Dam is a private earth dam located in Malott, Washington, and completed in 1910 for irrigation purposes.


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Summary

With a hydraulic height of 16 feet and a structural height of 16 feet, this dam serves a vital role in managing water resources in the region. The dam has a normal storage capacity of 1000 acre-feet and a total storage capacity of 1850 acre-feet, ensuring ample water supply for agricultural needs.

Situated on Tr-Tallant Creek in Okanogan County, this 410-foot-long dam is regulated by the Washington Dept of Ecology and undergoes regular inspections to ensure its safety and functionality. The dam has a high hazard potential but has been assessed as satisfactory in condition, providing reassurance to the local community. With a surface area of 185 acres and a drainage area of 3.1 square miles, Leader Lake Saddle Dam plays a crucial role in water management and recreation activities in the area.

Despite its age, Leader Lake Saddle Dam continues to be a reliable structure, meeting regulatory guidelines and effectively managing water resources in the region. With its strategic location and efficient design, this dam stands as a testament to the importance of proper infrastructure for sustainable water management in the face of changing climate conditions. Enthusiasts of water resources and climate resilience can appreciate the role of dams like Leader Lake Saddle Dam in ensuring the stability and reliability of water systems for future generations.

Year Completed

1910

Dam Length

410

River Or Stream

Tr-Tallant Creek

Primary Dam Type

Earth

Surface Area

185

Hydraulic Height

16

Drainage Area

3.1

Nid Storage

1850

Structural Height

16

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

16
       
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.