Plains Lpg Dam Reservoir Report
Nearby: White Tanks #3
Last Updated: December 15, 2025
Plains Lpg Dam, also known as Bumstead, is a privately owned structure located in Maricopa, Arizona, specifically in the city of Glendale.
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Summary
Built in 1977, this earth dam stands at a height of 23 feet and has a storage capacity of 297 acre-feet, with a normal storage level of 296 acre-feet. The dam serves a primary purpose of "Other," with its design consisting of stone core and an overall length of 2835 feet.
State regulated by the Arizona Department of Water Resources, Plains Lpg Dam has a high hazard potential and is classified as being in satisfactory condition as of its last assessment in November 2017. Despite the lack of a spillway, this dam has a surface area of 11 acres and is situated in an area with a high risk assessment rating of 2. While it has not undergone any modifications in recent years, regular inspections are conducted to ensure its structural integrity and adherence to safety standards.
The dam's location in a region with a high risk of inundation underscores the importance of effective risk management measures. With its proximity to urban areas and critical infrastructure, it is crucial for Plains Lpg Dam to have updated emergency action plans and adequate communication channels in place. As an integral part of water resource management in Arizona, it is imperative to monitor and address any potential risks associated with this essential infrastructure to safeguard both the environment and the surrounding communities.
Year Completed |
1977 |
Dam Length |
2835 |
Dam Height |
23 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
11 |
Nid Storage |
297 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
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.
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