Summary
Completed in 1964, this earth dam stands at a height of 21 feet and spans 28,900 feet in length. With a storage capacity of 18,684 acre-feet and a surface area of 935 acres, Magma Retarding plays a crucial role in managing water resources in the region.
Managed by the Arizona Department of Water Resources and regulated by state agencies, Magma Retarding has a high hazard potential but is currently in satisfactory condition. The structure features an uncontrolled spillway with a width of 150 feet and outlets that are also uncontrolled. Despite its moderate risk rating, Magma Retarding serves as a vital component of the flood control infrastructure in the area, helping to protect downstream communities and ecosystems from the impacts of extreme weather events.
As a key element of water resource management in Arizona, Magma Retarding underscores the importance of proactive maintenance and monitoring to ensure its continued effectiveness in mitigating flood risks. With its strategic location along the Gila River and strong regulatory oversight, this structure represents a valuable asset for climate resilience and disaster preparedness in the region.
Year Completed |
1964 |
Dam Length |
28900 |
Dam Height |
21 |
River Or Stream |
GILA RIVER - TR |
Primary Dam Type |
Earth |
Surface Area |
935 |
Drainage Area |
61.8 |
Nid Storage |
18684 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
21 |
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.
Magma Retarding