Mason Valley Refuge North Pond Dam

WALKER RIVER-TR· Lyon, Nevada· Built 1997· Earth· 16 ft tall
Significant Hazard Fish And Wildlife Pond Recreation State Government

Key Takeaway

Mason Valley Refuge North Pond Dam is classified as significant hazard in Nevada. It was completed in 1997 and is 29 years old. Its primary use is fish and wildlife pond. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 16 ft (taller than 29.2% in NV)
Dam Length2,723 ft
Dam TypeEarth
Max Storage465 acre-ft
Normal Storage400 acre-ft
Surface Area180 acres
Drainage Area1 sq mi
Max Discharge250 cfs
Year Completed1997 (29 years old)
NID IDNV10314

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: Yes
Last Inspection: April 20, 2023
State Regulated: Yes
Regulatory Agency: NEVADA DWR

Ownership

NEVADA DEPARTMENT OF WILDLIFE

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mason Valley Refuge North Pond Dam?

Mason Valley Refuge North Pond Dam 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 Mason Valley Refuge North Pond Dam?

Mason Valley Refuge North Pond Dam is owned by NEVADA DEPARTMENT OF WILDLIFE (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mason Valley Refuge North Pond Dam built?

Mason Valley Refuge North Pond Dam was completed in 1997, making it 29 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 Mason Valley Refuge North Pond Dam?

Mason Valley Refuge North Pond Dam serves the following purposes: Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mason Valley Refuge North Pond Dam?

Mason Valley Refuge North Pond Dam has a dam height of 16 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 Mason Valley Refuge North Pond Dam last inspected?

Mason Valley Refuge North Pond Dam was last inspected on April 20, 2023. 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.