Alpine Lake Dam

Alpine Lake Dam is an earth dam located in Warren County, Missouri, built in 2000. It carries a High hazard potential classification and has a satisfactory condition assessment.

Hazard potentialHighFailure would probably cost lives
ConditionSatisfactoryBest of 4 ratings
Emergency action planOn file
Last inspection12/28/2022
Height118 ft
Built200026 years ago

Dam profile

NID height · 118 ft
118 FT TEN-STORY BUILDINGMEDIAN U.S. DAM · 24 FT

118 ft tall and 1,279 ft long, taller than 98% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.

About Alpine Lake Dam

The primary purpose of Alpine Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Innsbrook Corporation (private). It impounds the Cave Creek near Innsbrook.

The dam stands 118 feet tall and stretches 1,279 feet across, creates a reservoir covering 325 acres, has a maximum storage capacity of 14,260 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2000, the structure is 26 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 12/28/2022.

At 118 feet, this dam is taller than 98% of all dams in the United States.

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 Missouri 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.

Location

StateMissouri
CountyWarren
Nearest CityInnsbrook
River/StreamCave Creek
Coordinates38.74920, -91.08155

Physical Characteristics

Dam TypeEarth
NID Height118 ft
Dam Height118 ft
Dam Length1,279 ft
Year Completed2000 (26 years old)

Storage & Hydraulics

NID Storage14,260 acre-ft
Max Storage14,260 acre-ft
Normal Storage10,266 acre-ft
Surface Area325 acres
Drainage Area3 sq mi
Max Discharge4,605 cfs

Ownership & Safety

PurposeRecreation
OwnerInnsbrook Corporation
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection12/28/2022
Emergency Action PlanYes

Identifiers

NID IDMO32058
Federal IDMO32058
More InfoState Dam Safety Program