Upper Gila Valley Site No. 1 Dam

NORTHRUP CANYON· Grant, New Mexico· Built 1962· Earth· 26 ft tall
High Hazard Flood Risk Reduction Debris Control Local Government

Key Takeaway

Upper Gila Valley Site No. 1 Dam is classified as high hazard in New Mexico. It was completed in 1962 and is 64 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 26 ft (taller than 32.2% in NM)
Dam Length517 ft
Dam TypeEarth
Max Storage107 acre-ft
Normal Storage0 acre-ft
Surface Area11 acres
Drainage Area1 sq mi
Max Discharge900 cfs
Year Completed1962 (64 years old)
NID IDNM00250

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: No
Last Inspection: May 23, 2018
State Regulated: Yes
Regulatory Agency: OFFICE OF THE STATE ENGINEER

Ownership

UPPER GILA VALLEY ARROYOS WATERSHED DISTRICT

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Upper Gila Valley Site No. 1 Dam?

Upper Gila Valley Site No. 1 Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Upper Gila Valley Site No. 1 Dam?

Upper Gila Valley Site No. 1 Dam is owned by UPPER GILA VALLEY ARROYOS WATERSHED DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Upper Gila Valley Site No. 1 Dam built?

Upper Gila Valley Site 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 Upper Gila Valley Site No. 1 Dam?

Upper Gila Valley Site No. 1 Dam serves the following purposes: Flood Risk Reduction, Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Upper Gila Valley Site No. 1 Dam?

Upper Gila Valley Site No. 1 Dam has a dam height of 26 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 Upper Gila Valley Site No. 1 Dam last inspected?

Upper Gila Valley Site No. 1 Dam was last inspected on May 23, 2018. 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.