Eldorado Canyon Dam (Herman Reservoir)

ELDORADO CANYON· Lyon, Nevada· Built 1972·
High Hazard Flood Risk Reduction Federal Government

Key Takeaway

Eldorado Canyon Dam (Herman Reservoir) is classified as high hazard in Nevada. It was completed in 1972 and is 54 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

Max Storage960 acre-ft
Normal Storage670 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1972 (54 years old)
Year Modified1995
NID IDNV00150

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: Yes
Last Inspection: December 13, 2019
State Regulated: Yes
Regulatory Agency: NEVADA DWR

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Eldorado Canyon Dam (Herman Reservoir)?

Eldorado Canyon Dam (Herman Reservoir) 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 Eldorado Canyon Dam (Herman Reservoir)?

Eldorado Canyon Dam (Herman Reservoir) is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Eldorado Canyon Dam (Herman Reservoir) built?

Eldorado Canyon Dam (Herman Reservoir) was completed in 1972, making it 54 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 Eldorado Canyon Dam (Herman Reservoir)?

Eldorado Canyon Dam (Herman Reservoir) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Eldorado Canyon Dam (Herman Reservoir) last inspected?

Eldorado Canyon Dam (Herman Reservoir) was last inspected on December 13, 2019. 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.