Lee/hammond Water Treatment Pond
Lee/hammond Water Treatment Pond is an earth dam located in San Juan County, New Mexico, built in 1999. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lee/hammond Water Treatment Pond
The primary purpose of Lee/hammond Water Treatment Pond is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Lee/hammond Water Users Association (local government). It impounds the San Juan River - Os near Mangum.
The dam stands 21 feet tall and stretches 2,006 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 86 acre-feet. Completed in 1999, the structure is 27 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 01/17/2018. That was 8 years ago, which is on the longer end for a high-hazard structure.
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 | San Juan |
| Nearest City | Mangum |
| River/Stream | San Juan River - Os |
| Coordinates | 36.69280, -107.99990 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 2,006 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 5 acres |
| Max Discharge | 5 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | LEE/HAMMOND WATER USERS ASSOCIATION |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/17/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NM00589 |
| Federal ID | NM00589 |
| More Info | State Dam Safety Program |