Coastal Timber CO Dam

GRIER SWAMP· Horry, South Carolina· Built 1970· 9 ft tall
High Hazard Recreation Private

Key Takeaway

Coastal Timber CO Dam is classified as high hazard in South Carolina. It was completed in 1970 and is 56 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 9 ft (taller than 3.2% in SC)
Max Storage140 acre-ft
Normal Storage56 acre-ft
Surface Area28 acres
Year Completed1970 (56 years old)
NID IDSC01012

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: March 23, 2023
State Regulated: Yes
Regulatory Agency: SC DHEC

Ownership

WENDELL NORRIS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Coastal Timber CO Dam?

Coastal Timber CO Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Coastal Timber CO Dam?

Coastal Timber CO Dam is owned by WENDELL NORRIS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Coastal Timber CO Dam built?

Coastal Timber CO Dam was completed in 1970, making it 56 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 Coastal Timber CO Dam?

Coastal Timber CO Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Coastal Timber CO Dam?

Coastal Timber CO Dam has a dam height of 9 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 Coastal Timber CO Dam last inspected?

Coastal Timber CO Dam was last inspected on March 23, 2023. 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.