Slack

Slack is a dam located in Owyhee County, Idaho, built in 1916. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Slack

Slack is a dam in Owyhee, Idaho. The dam is private-owned. It impounds the Unnamed Streams Juniper Creek.

The dam stands 20 feet tall and stretches 1,600 feet across, creates a reservoir covering 713 acres, has a storage capacity of 5,000 acre-feet, and collects water from a drainage area of 58 square miles. Completed in 1916, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/07/2014. That was over 11 years ago.

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Low HazardSatisfactory ConditionEmergency Action Plan: No

Location

StateIdaho
CountyOwyhee
River/StreamUnnamed Streams Juniper Creek
Coordinates42.05620, -116.46010

Physical Characteristics

NID Height20 ft
Dam Height20 ft
Dam Length1,600 ft
Year Completed1916 (110 years old)

Storage & Hydraulics

NID Storage5,000 acre-ft
Normal Storage5,000 acre-ft
Surface Area713 acres
Drainage Area58 sq mi
Max Discharge92 cfs
Spillway TypeControlled

Ownership & Safety

PurposeOther
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection10/07/2014
Emergency Action PlanNo

Identifiers

NID IDID00090
Federal IDID00090
More InfoState Dam Safety Program

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