Captain Tom

Captain Tom is an earth dam located in San Juan County, New Mexico, built in 1937. It carries a High hazard potential classification and has a fair condition assessment.

About Captain Tom

The primary purpose of Captain Tom is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Bia (federal). It impounds the To-dil-hil Wash near Newcomb.

The dam stands 29 feet tall and stretches 2,177 feet across, creates a reservoir covering 100 acres, has a maximum storage capacity of 1,080 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1937, the structure is well-established, with more than 75 years of service.

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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/13/2023.

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.

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateNew Mexico
CountySan Juan
Nearest CityNewcomb
River/StreamTo-dil-hil Wash
Coordinates36.29215, -108.74882

Physical Characteristics

Dam TypeEarth
NID Height29 ft
Dam Height29 ft
Dam Length2,177 ft
Year Completed1937 (89 years old)

Storage & Hydraulics

NID Storage1,080 acre-ft
Max Storage1,080 acre-ft
Normal Storage689 acre-ft
Surface Area100 acres
Drainage Area3 sq mi
Max Discharge15,131 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerBIA
Owner TypeFederal
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection09/13/2023
Emergency Action PlanYes

Identifiers

NID IDNM00693
Federal IDNM00693
More InfoState Dam Safety Program