# Ohio — Dam safety hazard classification, inspection frequency, and owner obligations by US state

For Ohio, hazard classification is Class IV; classification criteria is losses restricted mainly to the dam; inspection frequency is as deemed necessary; mandatory is conditional — the chief may inspect class IV dams as deemed necessary; inspector qualification is Chief of the Division of Water Resources, recorded from its source on 2026-08-18.

- **State:** Ohio _(verified: appears in the quote below)_
- **Hazard classification:** Class IV _(verified: appears in the quote below)_
- **Classification criteria:** losses restricted mainly to the dam _(verified: appears in the quote below)_
- **Inspection frequency:** as deemed necessary _(verified: appears in the quote below)_
- **Mandatory:** conditional — the chief may inspect class IV dams as deemed necessary _(our reading, not quoted from the source)_
- **Inspector qualification:** Chief of the Division of Water Resources _(verified: appears in the quote below)_
- **Statute:** 1501:21-13 _(verified: appears in the quote below)_

## What the source says

> Class IV — losses restricted mainly to the dam

## Source

- https://ohiodnr.gov/rules-and-regulations/rules-and-regulations-by-division/water-resources/dam-levee-classification
- https://codes.ohio.gov/ohio-administrative-code/rule-1501:21-21-01

Last verified: 2026-08-18. Review by: 2027-08-18.
Part of [Dam safety hazard classification, inspection frequency, and owner obligations by US state](https://referencesource.org/state-dam-safety-classification/).