Chilkoot

Chilkoot is a rockfill dam located in Madera County, California, built in 1890. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Chilkoot

The primary purpose of Chilkoot is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Pacific Gas And Electric Company (private). It impounds the Chilkoot Creek near Bass Lake.

The dam stands 11 feet tall and stretches 110 feet across, creates a reservoir covering 57 acres, and has a maximum storage capacity of 308 acre-feet. Completed in 1890, 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 07/16/2019.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateCalifornia
CountyMadera
Nearest CityBass Lake
River/StreamChilkoot Creek
Coordinates37.41130, -119.48460

Physical Characteristics

Dam TypeRockfill
NID Height11 ft
Dam Height11 ft
Dam Length110 ft
Year Completed1890 (136 years old)

Storage & Hydraulics

NID Storage308 acre-ft
Max Storage308 acre-ft
Normal Storage308 acre-ft
Surface Area57 acres
Max Discharge50 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerPacific Gas and Electric Company
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection07/16/2019
Emergency Action PlanNot Required

Identifiers

NID IDCA82568
Federal IDCA82568
More InfoState Dam Safety Program

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