William H. Harsha Dam
Dam in Clermont County, Ohio · East Fork of Little Miami · forms William H. Harsha Lake
Height
205 ft
62 m (NID height)
Length
1,450 ft
442 m
Completed
1973
William H. Harsha Lake today
730.52 ft
7 days ▼ 0.45 ft
vs full pool
▼ 2.48 ft
Normal storage
92,600 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 9:45 AM EDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Other; Recreation; Water Supply
- Dam type
- Rockfill
- Structural height
- 205 ft
- Owner
- USACE - Louisville District (Federal)
- Maximum storage
- 294,800 acre-ft
- Surface area
- 2,160 acres
- Hydraulic height
- 196 ft
- Drainage area
- 342 sq mi
- Spillway
- Uncontrolled, 985 ft wide
- Army Corps district
- Louisville District
- Also known as
- William H. Harsha Lake
- NID ID
- OH00929
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 16, 2026. Search NID ID OH00929 at nid.sec.usace.army.mil. Project website.