Lagrange Lock And Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyBrown
Nearest CityMEREDOSIA
River/StreamILLINOIS RIVER
Coordinates39.94040, -90.53430

Physical Characteristics

Dam TypeConcrete
NID Height21 ft
Dam Length676 ft
Year Completed1939 (87 years old)

Storage & Hydraulics

NID Storage55,000 acre-ft
Max Storage55,000 acre-ft
Drainage Area25,648 sq mi
Max Discharge156,000 cfs
Spillway TypeNone

Ownership & Safety

PurposeNavigation
OwnerUSACE - Rock Island District
Owner TypeFederal
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection07/07/2022
Emergency Action PlanYes

Identifiers

NID IDIL01015
Federal IDIL01015
More InfoState Dam Safety Program

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