Lakeside

Lakeside is an earth dam located in Yellowstone County, Montana. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Lakeside

The primary purpose of Lakeside is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lakeside Home Owners Assoc (private). It impounds the Off Stream (high Ditch) near Billings.

The dam stands 22 feet tall, and has a maximum storage capacity of 133 acre-feet.

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 03/05/2021.

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 Montana 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

StateMontana
CountyYellowstone
Nearest CityBillings
River/StreamOff Stream (high Ditch)
Coordinates45.74863, -108.73390

Physical Characteristics

Dam TypeEarth
NID Height22 ft
Dam Height22 ft

Storage & Hydraulics

NID Storage133 acre-ft
Max Storage133 acre-ft
Normal Storage93 acre-ft

Ownership & Safety

PurposeRecreation
OwnerLAKESIDE HOME OWNERS ASSOC
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection03/05/2021
Emergency Action PlanYes

Identifiers

NID IDMT03984
Federal IDMT03984
More InfoState Dam Safety Program

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