Lyman Dam

High HazardFair ConditionEmergency Action Plan: Yes

Location

StateArizona
CountyApache
Nearest CityST. JOHNS
River/StreamLITTLE COLORADO RIVER
Coordinates34.36972, -109.38333

Physical Characteristics

Dam TypeRockfill
NID Height60 ft
Dam Height60 ft
Dam Length800 ft
Year Completed1912 (114 years old)

Storage & Hydraulics

NID Storage44,500 acre-ft
Max Storage44,500 acre-ft
Normal Storage30,600 acre-ft
Surface Area1,324 acres
Drainage Area790 sq mi
Max Discharge15,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerARIZONA STATE PARKS;GROVERS HILL IRRIGATION DISTRICT
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection09/05/2024
Emergency Action PlanYes

Identifiers

NID IDAZ00004
Federal IDAZ00004
More InfoState Dam Safety Program

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