Dynegy/havana Sta/east Ash Pond Dam

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateIllinois
CountyMason
Nearest CityHAVANA
River/StreamTRIB ILLINOIS RIVER
Coordinates40.28497, -90.06835

Physical Characteristics

Dam TypeEarth
NID Height36 ft
Dam Height36 ft
Dam Length7,574 ft

Storage & Hydraulics

NID Storage1,440 acre-ft
Max Storage1,440 acre-ft
Normal Storage613 acre-ft
Surface Area43 acres
Drainage Area0 sq mi
Max Discharge244 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeDebris Control
OwnerDYNEGY MIDWEST GENERATION, LLC
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection10/07/2025
Emergency Action PlanYes

Identifiers

NID IDIL50483
Federal IDIL50483
More InfoState Dam Safety Program

Nearby Dams

Dynegy/havana Sta/east Ash Pond System 0.4 mi High Dynegy/havana Station/cell 1, Polishing P 0.6 mi High Dynegy/havana Sta/south Ash Pond Dam 1.2 mi Significant Quiver Creek Weir Dam 5.8 mi Low Lake Chautauqua Lower Dam 6.4 mi Low Lake Chautauqua Upper Dam 9.2 mi Low Carlson Lake Water Control Dam 10.1 mi Low Atkins Pond Dam 10.2 mi Low Lemons Pond Dam 11.0 mi Low Living Springs Camp Pond Dam 11.8 mi Low