Summary
Built in 1931 by the Bureau of Indian Affairs, this concrete dam stands at a structural height of 250 feet and has a length of 920 feet. Its primary purpose is to provide irrigation water for the surrounding area, with a storage capacity of 912,500 acre-feet.
Despite its age, Coolidge remains a vital resource for water management in the region. It is classified as having a high hazard potential and a very high risk level, emphasizing the importance of regular inspections and maintenance. The dam is operated by the Bureau of Indian Affairs and does not fall under state jurisdiction for regulation, permitting, or inspection.
Coolidge serves as a key infrastructure for water supply in the Gila River area, highlighting the intersection of water resources and climate management. Its historical significance and ongoing role in irrigation underscore the importance of sustainable water practices for both the environment and local communities.
Year Completed |
1931 |
Dam Length |
920 |
River Or Stream |
GILA RIVER |
Primary Dam Type |
Concrete |
Nid Storage |
912500 |
Structural Height |
250 |
Hazard Potential |
High |
Nid Height |
250 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gila River Below Coolidge Dam
|
10cfs |
San Carlos River Near Peridot
|
0cfs |
Gila River At Calva
|
54cfs |
Aravaipa Creek Near Mammoth
|
10cfs |
Gila River At Kelvin
|
48cfs |
Pinto Cr Blw Haunted Canyon Nr Miami
|
61cfs |
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.
Coolidge
San Carlos Reservoir At Coolidge Dam
Gila River (Middle)