Homestake Mining Company Evap Pond No.1

SAN MATEO-OS· Cibola, New Mexico· Built 1990· Earth· 39 ft tall
Significant Hazard Other Private

Key Takeaway

Homestake Mining Company Evap Pond No.1 is classified as significant hazard in New Mexico. It was completed in 1990 and is 36 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 39 ft (taller than 62% in NM)
Dam Length4,430 ft
Dam TypeEarth
Max Storage314 acre-ft
Normal Storage285 acre-ft
Surface Area26 acres
Year Completed1990 (36 years old)
Year Modified1994
NID IDNM00657

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: No
Last Inspection: June 25, 2015
State Regulated: Yes
Regulatory Agency: OFFICE OF THE STATE ENGINEER

Ownership

HOMESTAKE MINING COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Homestake Mining Company Evap Pond No.1?

Homestake Mining Company Evap Pond No.1 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Homestake Mining Company Evap Pond No.1?

Homestake Mining Company Evap Pond No.1 is owned by HOMESTAKE MINING COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Homestake Mining Company Evap Pond No.1 built?

Homestake Mining Company Evap Pond No.1 was completed in 1990, making it 36 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 Homestake Mining Company Evap Pond No.1?

Homestake Mining Company Evap Pond No.1 serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Homestake Mining Company Evap Pond No.1?

Homestake Mining Company Evap Pond No.1 has a dam height of 39 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 Homestake Mining Company Evap Pond No.1 last inspected?

Homestake Mining Company Evap Pond No.1 was last inspected on June 25, 2015. 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.