Bolack No 1 Dam

SAN JUAN RIVER - OS· San Juan, New Mexico· Built 1962· Earth· 20 ft tall
Low Hazard Recreation Private

Key Takeaway

Bolack No 1 Dam is classified as low hazard in New Mexico. It was completed in 1962 and is 64 years old. Its primary use is recreation.

Physical Details

Dam Height 20 ft (taller than 17.2% in NM)
Dam Length3,890 ft
Dam TypeEarth
Max Storage182 acre-ft
Normal Storage170 acre-ft
Surface Area35 acres
Year Completed1962 (64 years old)
Year Modified2004
NID IDNM00368

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: November 11, 2013
State Regulated: Yes
Regulatory Agency: OFFICE OF THE STATE ENGINEER

Ownership

BOLACK, TOMMY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Bolack No 1 Dam?

Bolack No 1 Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Bolack No 1 Dam?

Bolack No 1 Dam is owned by BOLACK, TOMMY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Bolack No 1 Dam built?

Bolack No 1 Dam was completed in 1962, making it 64 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Bolack No 1 Dam?

Bolack No 1 Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Bolack No 1 Dam?

Bolack No 1 Dam has a dam height of 20 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Bolack No 1 Dam last inspected?

Bolack No 1 Dam was last inspected on November 11, 2013. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.