East No. 1 Beardsley

GREASEWOOD DRAW· Niobrara, Wyoming· Built 1959· Earth· 29 ft tall

Key Takeaway

East No. 1 Beardsley is classified as low hazard in Wyoming. It was completed in 1959 and is 67 years old. Its primary use is fire protection.

Physical Details

Dam Height 29 ft (taller than 59.6% in WY)
Dam Length222 ft
Dam TypeEarth
Max Storage58 acre-ft
Normal Storage36 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1959 (67 years old)
NID IDWY00742

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: October 10, 2022
State Regulated: Yes
Regulatory Agency: SEO

Ownership

STANLEY O. SWANSON

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of East No. 1 Beardsley?

East No. 1 Beardsley 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 East No. 1 Beardsley?

East No. 1 Beardsley is owned by STANLEY O. SWANSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was East No. 1 Beardsley built?

East No. 1 Beardsley was completed in 1959, making it 67 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 East No. 1 Beardsley?

East No. 1 Beardsley serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is East No. 1 Beardsley?

East No. 1 Beardsley has a dam height of 29 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 East No. 1 Beardsley last inspected?

East No. 1 Beardsley was last inspected on October 10, 2022. 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.