Francis

Francis is a dam located in Elmore County, Idaho, built in 1914. It carries a Significant hazard potential classification and has a fair condition assessment.

About Francis

The primary purpose of Francis 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 Negro Creek Camas Creek near Hill City.

The dam stands 33 feet tall and stretches 390 feet across, creates a reservoir covering 40 acres, has a storage capacity of 330 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1914, the structure is over a century 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 06/02/2020.

At 33 feet, this dam is taller than 78% of dams nationwide.

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Significant HazardFair ConditionEmergency Action Plan: Not Required

Location

StateIdaho
CountyElmore
Nearest CityHill City
River/StreamNegro Creek Camas Creek
Coordinates43.33090, -115.12700

Physical Characteristics

NID Height33 ft
Dam Height33 ft
Dam Length390 ft
Year Completed1914 (112 years old)

Storage & Hydraulics

NID Storage330 acre-ft
Normal Storage330 acre-ft
Surface Area40 acres
Drainage Area3 sq mi
Max Discharge220 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection06/02/2020
Emergency Action PlanNot Required

Identifiers

NID IDID00026
Federal IDID00026
More InfoState Dam Safety Program

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