Stallard Dam Reservoir Report
Nearby: Cottonwood (Drewsey) Altnow Reservoir
Last Updated: December 13, 2025
Stallard Dam, located in Drewsey, Oregon, is a privately owned structure primarily used for irrigation purposes.
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Summary
Completed in 1950, this earth dam stands at a height of 35 feet and has a hydraulic height of 33 feet, with a total structural height of 37 feet. The dam has a storage capacity of 260 acre-feet, with a normal storage level of 193 acre-feet, covering a surface area of 78.3 acres and serving a drainage area of 7.1 square miles.
The dam, situated on Otis Creek, is regulated by the Oregon Water Resources Department and is subject to state permitting, inspection, and enforcement. With a low hazard potential, the condition of Stallard Dam is currently not rated, with the last inspection being conducted in October 2012. Despite its age, the dam continues to play a crucial role in supporting local irrigation activities in the region, ensuring a sustainable water supply for agricultural needs. The dam's design and construction reflect the commitment to water resource management and climate resilience in the area, contributing to the overall water security of Harney County, Oregon.
As a key infrastructure for water management, Stallard Dam exemplifies the importance of private ownership in maintaining critical water resources for irrigation. With a capacity to store 260 acre-feet of water and a maximum discharge of 718 cubic feet per second, the dam serves as a vital component for agricultural operations in the region. As climate change impacts water availability and usage patterns, structures like Stallard Dam become increasingly essential for ensuring water security and sustainability in the face of evolving environmental challenges.
Year Completed |
1950 |
Dam Length |
773 |
Dam Height |
35 |
River Or Stream |
OTIS CREEK |
Primary Dam Type |
Earth |
Surface Area |
78.3 |
Hydraulic Height |
33 |
Drainage Area |
7.1 |
Nid Storage |
260 |
Structural Height |
37 |
Hazard Potential |
Low |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Stallard Dam
Middle Fork Malheur (Including Bluebucket Creek)
North Fork Malheur River
Malheur Nf