O'brien North

Significant HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMinnesota
CountyItasca
Nearest CityPengilly
River/StreamO'Brien Creek
Coordinates47.37959, -93.13380

Physical Characteristics

Dam TypeEarth
NID Height58 ft
Dam Height49 ft
Dam Length1,000 ft
Year Completed1972 (54 years old)

Storage & Hydraulics

NID Storage2,550 acre-ft
Max Storage2,550 acre-ft
Normal Storage1,450 acre-ft
Drainage Area8 sq mi
Max Discharge175 cfs

Ownership & Safety

PurposeTailings
OwnerUS Steel
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection10/04/2022
Emergency Action PlanNot Required

Identifiers

NID IDMN00803
Federal IDMN00803
More InfoState Dam Safety Program

Nearby Dams

Perry-wyman Tailings 1.7 mi Low Reservoir No. 2 2.2 mi Significant Mesabi Chief Clarification 2.3 mi Low Reservoir No. 6 2.4 mi Low Mesabi Chief Tailings 2 2.5 mi Low Mesabi Chief Tailings 3 2.5 mi Low Essar Steel Tailings Basin 3.2 mi Significant Butler Taconite Initial Tailings 3.3 mi Undetermined Essar Steel Reclaim Pond 3.5 mi Low Nspc Initial Tailings 3.5 mi Low