L.p.hill Dam #3

L.p.hill Dam #3 is an earth dam located in Columbia County, Florida, built in 1954. It carries a High hazard potential classification and has a unsatisfactory condition assessment.

About L.p.hill Dam #3

The primary purpose of L.p.hill Dam #3 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Leonard P. Hill (private). It impounds the Tr-alligator Lake near Lake City.

The dam stands 21 feet tall and stretches 300 feet across, creates a reservoir covering 74 acres, has a maximum storage capacity of 74 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1954, the structure is well into its service life at over 50 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 11/05/2014. That was 11 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.

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 Florida 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 HazardUnsatisfactory ConditionEmergency Action Plan: No

Location

StateFlorida
CountyColumbia
Nearest CityLake City
River/StreamTr-alligator Lake
Coordinates30.16822, -82.60378

Physical Characteristics

Dam TypeEarth
NID Height21 ft
Dam Height21 ft
Dam Length300 ft
Year Completed1954 (72 years old)

Storage & Hydraulics

NID Storage74 acre-ft
Max Storage74 acre-ft
Normal Storage60 acre-ft
Surface Area74 acres
Drainage Area0 sq mi
Max Discharge130 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerLEONARD P. HILL
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentUnsatisfactory
Last Inspection11/05/2014
Emergency Action PlanNo

Identifiers

NID IDFL00554
Federal IDFL00554
More InfoState Dam Safety Program

Nearby Dams