William H. Harsha Dam

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateOhio
CountyClermont
Nearest CityBATAVIA
River/StreamEAST FORK OF LITTLE MIAMI
Coordinates39.02278, -84.15056

Physical Characteristics

Dam TypeRockfill
NID Height205 ft
Dam Length1,450 ft
Year Completed1973 (53 years old)

Storage & Hydraulics

NID Storage294,800 acre-ft
Max Storage294,800 acre-ft
Normal Storage92,600 acre-ft
Surface Area2,160 acres
Drainage Area342 sq mi
Max Discharge211,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUSACE - Louisville District
Owner TypeFederal
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection07/21/2025
Emergency Action PlanYes

Identifiers

NID IDOH00929
Federal IDOH00929
More InfoState Dam Safety Program

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