Ella

MIDDLE SYBILLE CREEK· Albany, Wyoming· Built 1963· Earth· 20 ft tall
Low Hazard Irrigation Private

Key Takeaway

Ella is classified as low hazard in Wyoming. It was completed in 1963 and is 63 years old. Its primary use is irrigation.

Physical Details

Dam Height 20 ft (taller than 21.5% in WY)
Dam Length468 ft
Dam TypeEarth
Max Storage108 acre-ft
Normal Storage79 acre-ft
Surface Area9 acres
Drainage Area0 sq mi
Max Discharge1,609 cfs
Year Completed1963 (63 years old)
NID IDWY00149

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: June 10, 2020
State Regulated: Yes
Regulatory Agency: SEO

Ownership

SYBILLE RANCH LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ella?

Ella 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 Ella?

Ella is owned by SYBILLE RANCH LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Ella built?

Ella was completed in 1963, making it 63 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 Ella?

Ella serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Ella?

Ella has a dam height of 20 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 Ella last inspected?

Ella was last inspected on June 10, 2020. 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.