Oso Largo Dam

Low HazardUnsatisfactory ConditionEmergency Action Plan: Not Required

Location

StateArizona
CountyGraham
Nearest CityFORT THOMAS, AZ
River/StreamGILA RIVER
Coordinates32.91561, -109.91031

Physical Characteristics

Dam TypeGravity
NID Height26 ft
Dam Length4,625 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage616 acre-ft
Max Storage616 acre-ft
Normal Storage120 acre-ft
Surface Area241 acres
Drainage Area93 sq mi
Max Discharge5,442 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerDOI BLM
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentUnsatisfactory
Last Inspection08/20/2010
Emergency Action PlanNot Required

Identifiers

NID IDAZ20020
Federal IDAZ20020
More InfoState Dam Safety Program

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