South Anna Dam #22

NORTHEAST CREEK· Louisa, Virginia· Earth· 37 ft tall

High Hazard Water Supply Flood Risk Reduction Local Government

Key Takeaway

South Anna Dam #22 is classified as high hazard in Virginia. Its primary use is water supply. 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	37 ft (taller than 83.5% in VA)
Dam Length	1,600 ft
Dam Type	Earth
Max Storage	5.3K acre-ft
Normal Storage	1.9K acre-ft

Surface Area	187 acres
Drainage Area	10 sq mi
NID ID	VA109034

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: Yes

Last Inspection: April 13, 2022

State Regulated: Yes

Regulatory Agency: Department of Conservation and Recreation

Ownership

Louisa County Water Authorty

Local Government

Nearby Dams

South Anna Dam #23

Louisa, VA

Significant Hazard 32 ft

Louisa H.S. Dam

Louisa, VA

Unknown 21 ft

Routes 522 & 605 Dam

Louisa, VA

Unknown 35 ft

Woolfolk Brothers Dam #2

Louisa, VA

Unknown 24 ft

Woolfolks Dam No. 1

Louisa, VA

Low Hazard 26 ft

Little River Dam #1

Louisa, VA

Significant Hazard 37 ft

Pink House Dam

Louisa, VA

Unknown 16 ft

Glen Beau Dam

Louisa, VA

Unknown 13 ft

Frequently Asked Questions

What is the hazard classification of South Anna Dam #22?

South Anna Dam #22 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 South Anna Dam #22?

South Anna Dam #22 is owned by Louisa County Water Authorty (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of South Anna Dam #22?

South Anna Dam #22 serves the following purposes: Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is South Anna Dam #22?

South Anna Dam #22 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.

When was South Anna Dam #22 last inspected?

South Anna Dam #22 was last inspected on April 13, 2022. 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.