Olney Draw Detention Dam

RAILROAD WASH· Greenlee, Arizona· Built 1953· Gravity·
Low Hazard Flood Risk Reduction Federal Government

Key Takeaway

Olney Draw Detention Dam is classified as low hazard in Arizona. It was completed in 1953 and is 73 years old. Its primary use is flood risk reduction.

Physical Details

Dam Length1,475 ft
Dam TypeGravity
Max Storage320 acre-ft
Normal Storage180 acre-ft
Surface Area25 acres
Drainage Area8 sq mi
Max Discharge2,810 cfs
Year Completed1953 (73 years old)
NID IDAZ20018

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 21, 2015
State Regulated: No

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Olney Draw Detention Dam?

Olney Draw Detention 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 Olney Draw Detention Dam?

Olney Draw Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Olney Draw Detention Dam built?

Olney Draw Detention Dam was completed in 1953, making it 73 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 Olney Draw Detention Dam?

Olney Draw Detention Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Olney Draw Detention Dam last inspected?

Olney Draw Detention Dam was last inspected on July 21, 2015. 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.