Deweese Gp-5

SAND CREEK· Harper, Oklahoma· Built 1959· Earth· 32 ft tall
Low Hazard Private

Key Takeaway

Deweese Gp-5 is classified as low hazard in Oklahoma. It was completed in 1959 and is 67 years old.

Physical Details

Dam Height 32 ft (taller than 65.1% in OK)
Dam Length382 ft
Dam TypeEarth
Max Storage35 acre-ft
Normal Storage19 acre-ft
Surface Area3 acres
Drainage Area1 sq mi
Year Completed1959 (67 years old)
NID IDOK83820

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
State Regulated: No

Ownership

DEWEESE ESTATE

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Deweese Gp-5?

Deweese Gp-5 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 Deweese Gp-5?

Deweese Gp-5 is owned by DEWEESE ESTATE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Deweese Gp-5 built?

Deweese Gp-5 was completed in 1959, making it 67 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

How tall is Deweese Gp-5?

Deweese Gp-5 has a dam height of 32 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.

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.