East Stephens Settling

East 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 fair condition assessment.

About East Stephens Settling

The primary purpose of East 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 15 feet tall and stretches 3,000 feet across, creates a reservoir covering 260 acres, and has a maximum storage capacity of 310 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 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 09/17/2014. That was over 11 years ago.

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Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateMinnesota
CountySt. Louis
Nearest CityLocal Residents
River/StreamSecond Creek
Coordinates47.56437, -92.19247

Physical Characteristics

Dam TypeEarth
NID Height15 ft
Dam Height15 ft
Dam Length3,000 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage310 acre-ft
Max Storage310 acre-ft
Normal Storage106 acre-ft
Surface Area260 acres
Max Discharge75 cfs

Ownership & Safety

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

Identifiers

NID IDMN00789
Federal IDMN00789
More InfoState Dam Safety Program

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