Santa Cruz Site 1 Dam
Santa Cruz Site 1 Dam is an earth dam located in Rio Arriba County, New Mexico, built in 1962. It carries a High hazard potential classification and has a poor condition assessment.
About Santa Cruz Site 1 Dam
The primary purpose of Santa Cruz Site 1 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Santa Fe-pojoaque Soil & Water Conservation Dist. (local government). It impounds the Canada Ancha near Chimayo.
The dam stands 62 feet tall and stretches 1,032 feet across, creates a reservoir covering 43 acres, has a maximum storage capacity of 963 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1962, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 10/26/2016. That was 9 years ago, which is on the longer end for a high-hazard structure.
At 62 feet, this dam is taller than 95% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New Mexico dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Mexico |
| County | Rio Arriba |
| Nearest City | Chimayo |
| River/Stream | Canada Ancha |
| Coordinates | 36.01020, -105.91840 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 62 ft |
| Dam Height | 56 ft |
| Dam Length | 1,032 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 963 acre-ft |
| Max Storage | 963 acre-ft |
| Surface Area | 43 acres |
| Drainage Area | 8 sq mi |
| Max Discharge | 7,298 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | SANTA FE-POJOAQUE SOIL & WATER CONSERVATION DIST. |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 10/26/2016 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NM00260 |
| Federal ID | NM00260 |
| More Info | State Dam Safety Program |