West Stephens Settling

West Stephens Settling is an earth dam located in St. Louis County, Minnesota, built in 1964. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About West Stephens Settling

The primary purpose of West Stephens Settling is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Mesabi Nugget (private). It impounds the Second Creek near Local Residents.

The dam stands 10 feet tall and stretches 3,000 feet across, creates a reservoir covering 13 acres, and has a maximum storage capacity of 344 acre-feet. Completed in 1964, the structure is well into its service life at over 50 years 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 09/17/2014. That was over 11 years ago.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMinnesota
CountySt. Louis
Nearest CityLocal Residents
River/StreamSecond Creek
Coordinates47.56910, -92.21625

Physical Characteristics

Dam TypeEarth
NID Height10 ft
Dam Height10 ft
Dam Length3,000 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage344 acre-ft
Max Storage344 acre-ft
Normal Storage86 acre-ft
Surface Area13 acres
Max Discharge75 cfs

Ownership & Safety

PurposeTailings
OwnerMesabi Nugget
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/17/2014
Emergency Action PlanNot Required

Identifiers

NID IDMN00790
Federal IDMN00790
More InfoState Dam Safety Program

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