Otter Lake Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyMacoupin
Nearest CityROCKRIDGE
River/StreamWEST FORK OTTER CREEK
Coordinates39.40715, -89.91006

Physical Characteristics

Dam TypeEarth
NID Height71 ft
Dam Height71 ft
Dam Length1,010 ft
Year Completed1969 (57 years old)

Storage & Hydraulics

NID Storage24,708 acre-ft
Max Storage24,708 acre-ft
Normal Storage15,563 acre-ft
Surface Area760 acres
Drainage Area20 sq mi
Max Discharge21,153 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerOTTER LAKE WATER COMMISSION
Owner TypePublic Utility
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection04/26/2023
Emergency Action PlanYes

Identifiers

NID IDIL00133
Federal IDIL00133
More InfoState Dam Safety Program

Nearby Dams

Whites Pond Dam 2.2 mi Low Austiff Pond Dam 2.9 mi Low Girard Sunset Lake Dam 3.5 mi Low Palmyra-modesto City Lake Dam 3.6 mi Significant Otter Lake Low Flow Dam 3.9 mi Low Harry Mullens Pond Dam 1 5.5 mi Low Mitch King Dam 5.8 mi Low Meisenheimer Pond Dam 2 6.2 mi Low Hartsook Pond Dam 1 6.5 mi Low Clevenger Pond Dam 1 7.2 mi Low