Jerry F. Costello Lock And Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyRandolph
Nearest CityModoc
River/StreamKASKASKIA RIVER
Coordinates37.98419, -89.94597

Physical Characteristics

Dam TypeConcrete
NID Height81 ft
Dam Height66 ft
Dam Length603 ft
Year Completed1974 (52 years old)

Storage & Hydraulics

NID Storage25,246 acre-ft
Max Storage25,246 acre-ft
Normal Storage22,183 acre-ft
Surface Area2,618 acres
Drainage Area5,790 sq mi
Max Discharge62,000 cfs
Spillway TypeControlled

Ownership & Safety

PurposeNavigation
OwnerUSACE - St. Louis District
Owner TypeFederal
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection03/29/2023
Emergency Action PlanYes

Identifiers

NID IDIL00115
Federal IDIL00115
More InfoState Dam Safety Program

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