Mcnairy Cypress Creek #16 Dam

Mcnairy Cypress Creek #16 Dam is an earth dam located in McNairy County, Tennessee, built in 1982. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Mcnairy Cypress Creek #16 Dam

Mcnairy Cypress Creek #16 Dam is a dam in McNairy, Tennessee. The dam is owned by Mcnairy County (local government). It impounds the Sibley Branch.

The dam stands 30 feet tall and stretches 940 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 791 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1982, the structure is 44 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/20/2024.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Tennessee dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateTennessee
CountyMcNairy
River/StreamSibley Branch
Coordinates35.17778, -88.52722

Physical Characteristics

Dam TypeEarth
NID Height30 ft
Dam Length940 ft
Year Completed1982 (44 years old)

Storage & Hydraulics

NID Storage791 acre-ft
Max Storage791 acre-ft
Normal Storage105 acre-ft
Surface Area23 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

OwnerMcNairy County
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection06/20/2024
Emergency Action PlanYes

Identifiers

NID IDTN10912
Federal IDTN10912
More InfoState Dam Safety Program

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