Riley Dam

TR-WASHITA RIVER· Hemphill, Texas· Built 1966· Earth· 20 ft tall
Low Hazard Private

Key Takeaway

Riley Dam is classified as low hazard in Texas. It was completed in 1966 and is 60 years old.

Physical Details

Dam Height 20 ft (taller than 33.5% in TX)
Dam Length365 ft
Dam TypeEarth
Max Storage63 acre-ft
Normal Storage51 acre-ft
Surface Area0 acres
Drainage Area0 sq mi
Year Completed1966 (60 years old)
NID IDTX06110

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

THOMAS RILEY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Riley Dam?

Riley 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 Riley Dam?

Riley Dam is owned by THOMAS RILEY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Riley Dam built?

Riley 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.

How tall is Riley Dam?

Riley Dam 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.

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.