Ek Addition No. 1 Dam

EK CREEK· Natrona, Wyoming· Built 1966· Gravity·
Low Hazard Debris Control Federal Government

Key Takeaway

Ek Addition No. 1 Dam is classified as low hazard in Wyoming. It was completed in 1966 and is 60 years old. Its primary use is debris control.

Physical Details

Dam Length790 ft
Dam TypeGravity
Max Storage103 acre-ft
Normal Storage12 acre-ft
Surface Area17 acres
Year Completed1966 (60 years old)
NID IDWY02567

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: July 19, 2017
State Regulated: No

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ek Addition No. 1 Dam?

Ek Addition No. 1 Dam 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 Ek Addition No. 1 Dam?

Ek Addition No. 1 Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Ek Addition No. 1 Dam built?

Ek Addition No. 1 Dam was completed in 1966, making it 60 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 Ek Addition No. 1 Dam?

Ek Addition No. 1 Dam serves the following purposes: Debris Control. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Ek Addition No. 1 Dam last inspected?

Ek Addition No. 1 Dam was last inspected on July 19, 2017. 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.