Hidden Lake

Hidden Lake is a dam located in Valley County, Idaho, built in 1970. It carries a Significant hazard potential classification and has a fair condition assessment.

About Hidden Lake

The primary purpose of Hidden Lake is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is private-owned. It impounds the Padget Creek North Fork Little Squaw Creek near High Valley.

The dam stands 26 feet tall and stretches 1,525 feet across, creates a reservoir covering 28 acres, has a storage capacity of 375 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1970, the structure is well into its service life at over 50 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. The most recent inspection on record was 06/22/2018.

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Significant HazardFair ConditionEmergency Action Plan: Not Required

Location

StateIdaho
CountyValley
Nearest CityHigh Valley
River/StreamPadget Creek North Fork Little Squaw Creek
Coordinates44.23040, -116.18460

Physical Characteristics

NID Height26 ft
Dam Height26 ft
Dam Length1,525 ft
Year Completed1970 (56 years old)

Storage & Hydraulics

NID Storage375 acre-ft
Normal Storage375 acre-ft
Surface Area28 acres
Drainage Area1 sq mi
Max Discharge120 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFish and Wildlife Pond
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection06/22/2018
Emergency Action PlanNot Required

Identifiers

NID IDID00251
Federal IDID00251
More InfoState Dam Safety Program

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