Allen No.1

TR-OWL CREEK· Garvin, Oklahoma· Built 1977· Earth· 25 ft tall
Low Hazard Other Private

Key Takeaway

Allen No.1 is classified as low hazard in Oklahoma. It was completed in 1977 and is 49 years old. Its primary use is other.

Physical Details

Dam Height 25 ft (taller than 29.9% in OK)
Dam Length360 ft
Dam TypeEarth
Max Storage50 acre-ft
Normal Storage25 acre-ft
Max Discharge300 cfs
Year Completed1977 (49 years old)
NID IDOK21126

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: April 22, 2010
State Regulated: Yes
Regulatory Agency: OWRB

Ownership

DAVID VERNON

Private

Nearby Dams

Allen No.2

Garvin, OK

Low Hazard 28 ft

Oknoname 049004

Garvin, OK

Low Hazard 20 ft

SCS-Washington Creek Site-1

Garvin, OK

High Hazard 40 ft

Oknoname 087047

McClain, OK

Low Hazard 23 ft

SCS-Owl Creek Site-15

McClain, OK

Low Hazard 20 ft

SCS-Owl Creek Site-14

McClain, OK

Low Hazard 19 ft

SCS-Washington Creek Site-2

Garvin, OK

Low Hazard 40 ft

SCS-Owl Creek Site-05

McClain, OK

Low Hazard 20 ft

Frequently Asked Questions

What is the hazard classification of Allen No.1?

Allen No.1 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 Allen No.1?

Allen No.1 is owned by DAVID VERNON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Allen No.1 built?

Allen No.1 was completed in 1977, making it 49 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 Allen No.1?

Allen No.1 serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Allen No.1?

Allen No.1 has a dam height of 25 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 Allen No.1 last inspected?

Allen No.1 was last inspected on April 22, 2010. 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.