Antelope Creek

Antelope Creek is a dam located in Bonneville County, Idaho, built in 1991. It carries a Significant hazard potential classification and has a fair condition assessment.

About Antelope Creek

The primary purpose of Antelope Creek is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Antelope Creek Snake River near Antelope Creek.

The dam stands 22 feet tall and stretches 350 feet across, creates a reservoir covering 10 acres, and has a storage capacity of 67 acre-feet. Completed in 1991, the structure is 35 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/07/2019.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateIdaho
CountyBonneville
Nearest CityAntelope Creek
River/StreamAntelope Creek Snake River
Coordinates43.52580, -111.53020

Physical Characteristics

NID Height22 ft
Dam Height22 ft
Dam Length350 ft
Year Completed1991 (35 years old)

Storage & Hydraulics

NID Storage67 acre-ft
Normal Storage67 acre-ft
Surface Area10 acres
Max Discharge280 cfs
Spillway TypeControlled

Ownership & Safety

PurposeIrrigation
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection06/07/2019
Emergency Action PlanYes

Identifiers

NID IDID00472
Federal IDID00472
More InfoState Dam Safety Program

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