Summary
It is the largest reservoir in the San Carlos Irrigation Project, covering an area of 19,500 acres and with a capacity of up to 1,315,400 acre-feet of water. The reservoir receives water from the Gila River and seasonal runoff from the surrounding mountain ranges, which is stored for irrigation, power generation, and municipal use. The reservoir also provides recreational opportunities such as fishing, boating, and camping. Additionally, it is a valuable source of water supply for agriculture in the region, with crops such as cotton, wheat, and alfalfa being grown in the surrounding areas. The hydrology of the reservoir is influenced by both surface flow and snowpack providers, including the Sierra Nevada Mountains and the White Mountains.
Reservoir Details
| 24hr Change | 0.93% |
| Percent of Normal | 15% |
| Minimum |
42.56
2021-05-21 |
| Maximum |
529,300.0
2023-04-27 |
| Average | 84,900 |
| Year_Completed | 1931 |
| Nid_Storage | 912500 |
| Structural_Height | 250 |
| River_Or_Stream | GILA RIVER |
| Hazard_Potential | High |
| Dam_Length | 920 |
| Primary_Dam_Type | Concrete |
| Nid_Height | 250 |
Seasonal Comparison
Reservoir Storage, Acre-Ft Levels
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)