Alto Pass Reservoir Dam

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyUnion
Nearest CityALTO PASS-OFFSTREAM
River/StreamCAVE CREEK
Coordinates37.57948, -89.30611

Physical Characteristics

Dam TypeEarth
NID Height45 ft
Dam Height45 ft
Dam Length450 ft
Year Completed1964 (62 years old)

Storage & Hydraulics

NID Storage296 acre-ft
Max Storage296 acre-ft
Normal Storage168 acre-ft
Surface Area15 acres
Drainage Area0 sq mi
Max Discharge1,900 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerALTO PASS WD
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection10/04/2023
Emergency Action PlanYes

Identifiers

NID IDIL00064
Federal IDIL00064
More InfoState Dam Safety Program

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