S1 Dam

Harrison, Texas· 37 ft tall
Low Hazard Private

Key Takeaway

S1 Dam is classified as low hazard in Texas.

Physical Details

Dam Height 37 ft (taller than 80.8% in TX)
Dam Length1,450 ft
Max Storage281 acre-ft
Max Discharge3,077 cfs
NID IDTX07349

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: Yes
State Regulated: No

Ownership

SOUTHWESTERN ELECTRIC POWER COMPANY;THE SABINE MINING COMPANY

Private

Nearby Dams

S2 Dam

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Low Hazard 19 ft

Sediment Pond R1-A

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Low Hazard 22 ft

Sediment Pond R1-B

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S4 Sediment Pond Dam

Harrison, TX

Low Hazard 23 ft

S6 Dam

Harrison, TX

Significant Hazard 32 ft

S7 Dam

Harrison, TX

Significant Hazard 19 ft

Q4 Dam

Harrison, TX

Significant Hazard 33 ft

Springs Creek

Harrison, TX

Significant Hazard 38 ft

Frequently Asked Questions

What is the hazard classification of S1 Dam?

S1 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 S1 Dam?

S1 Dam is owned by SOUTHWESTERN ELECTRIC POWER COMPANY;THE SABINE MINING COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

How tall is S1 Dam?

S1 Dam has a dam height of 37 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.