Lone Tree No. 2

SAND CREEK· Albany, Wyoming· Built 1909· Earth· 7 ft tall

Key Takeaway

Lone Tree No. 2 is classified as low hazard in Wyoming. It was completed in 1909 and is 117 years old. Its primary use is irrigation.

Physical Details

Dam Height 7 ft (taller than 0.1% in WY)
Dam Length600 ft
Dam TypeEarth
Max Storage179 acre-ft
Normal Storage124 acre-ft
Surface Area25 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1909 (117 years old)
NID IDWY00029

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: August 5, 2021
State Regulated: Yes
Regulatory Agency: SEO

Ownership

RICHARD PELLY (ATTN: PENCE & MCMILLAN)

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lone Tree No. 2?

Lone Tree No. 2 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 Lone Tree No. 2?

Lone Tree No. 2 is owned by RICHARD PELLY (ATTN: PENCE & MCMILLAN) (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lone Tree No. 2 built?

Lone Tree No. 2 was completed in 1909, making it 117 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 Lone Tree No. 2?

Lone Tree No. 2 serves the following purposes: Irrigation, 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 Lone Tree No. 2?

Lone Tree No. 2 has a dam height of 7 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 Lone Tree No. 2 last inspected?

Lone Tree No. 2 was last inspected on August 5, 2021. 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.