Flood events in Ottawa County, Ohio The flood events on record, by date and by year
This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).
NCEI has 38 flood events on record for Ottawa County, Ohio, from 1996 through 30 Jun 2026.
The newest flood event on record is on 24 Aug 2023.
From 2016 through 2025, NCEI has 23 flood events on record for the county.
The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
Zone (NWS Forecast Zone): A zone is a geographic area defined by the NWS for issuing forecasts, watches, and warnings. While zones often align with counties, they can also represent smaller or subdivided areas within a county to account for differences in weather conditions, such as elevation or proximity to water. Larger-scale events—such as heat, cold, drought, and winter storms—are typically recorded by zone.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .
Date of the data: NCEI storm events through . Event types on this page: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
Newest flood events on record
Flash Flood
1 mile SW of PORT CLINTON. Damage estimate: $400 thousand
Flash Flood
At PUT IN BAY ARPT. Damage estimate: $750 thousand
Flash Flood
1 mile SW of CATAWBA IS. Damage estimate: $250 thousand
Lakeshore Flood
On record for the forecast zone
Lakeshore Flood
On record for the forecast zone
Lakeshore Flood
On record for the forecast zone. Damage estimate: $250 thousand
Lakeshore Flood
On record for the forecast zone
Lakeshore Flood
On record for the forecast zone
Flood
At CATAWBA IS. Damage estimate: $100 thousand
Lakeshore Flood
On record for the forecast zone
Flood
5 miles NE of TROWBRIDGE. Damage estimate: $400 thousand
Lakeshore Flood
On record for the forecast zone
Lakeshore Flood
On record for the forecast zone
Lakeshore Flood
On record for the forecast zone. Damage estimate: $1.0 million
Lakeshore Flood
On record for the forecast zone. Damage estimate: $100 thousand
Lakeshore Flood
On record for the forecast zone. Damage estimate: $200 thousand
Flood
At OAK HARBOR
Flood
At ISLE ST GEORGE. Damage estimate: $2.0 million
Coastal Flood
On record for the forecast zone. Damage estimate: $20 thousand
Coastal Flood
On record for the forecast zone. Damage estimate: $10 thousand
Coastal Flood
On record for the forecast zone
Coastal Flood
On record for the forecast zone. Damage estimate: $35 thousand
Flash Flood
2 miles WNW of OAK HARBOR. Damage estimate: $1.3 million
Flood
At OAK HARBOR
Flood
At PORT CLINTON. Damage estimate: $2.5 million
A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. NCEI gives no magnitude for this hazard.
Flood events by year
| Decade | Year that ends in 0 | Year that ends in 1 | Year that ends in 2 | Year that ends in 3 | Year that ends in 4 | Year that ends in 5 | Year that ends in 6 | Year that ends in 7 | Year that ends in 8 | Year that ends in 9 | All |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1960s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1970s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1980s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1990s | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 3 | 1 | 0 | 8 |
| 2000s | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 1 | 5 |
| 2010s | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 9 | 12 |
| 2020s | 10 | 0 | 0 | 3 | 0 | 0 | 0 (part of the year) | 13 |
A darker cell has a larger count. The number is in each cell.
Flood and flash flood events are on record from 1996. The year 2026 has the events through 30 Jun 2026 only.
By month, all years
- Jan1 event
- Feb3 events
- Mar1 event
- Apr4 events
- May7 events
- Jun16 events
- Jul1 event
- Aug4 events
- Sep1 event
- Oct0 events
- Nov0 events
- Dec0 events
Beside the other counties
| Measure | Ottawa | All counties of Ohio | All counties of the United States |
|---|---|---|---|
| Flood events, 1996 to 2026 | 38 | 6,792 | 177,902 |
| Events for each 100 square miles | 14.9 | 16.6 | 5.0 |
| Events for each 10,000 residents | 9.5 | 5.8 | 5.4 |
The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.
More flood events on record
| Date | Event type | Magnitude | Damage estimate | Deaths | Injuries | On record for |
|---|---|---|---|---|---|---|
| Flash Flood | not recorded | $2.0 million | 0 | 0 | County | |
| Flash Flood | not recorded | $500 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $8.0 million | 0 | 0 | County | |
| Flood | not recorded | $6.3 million | 0 | 0 | County | |
| Flood | not recorded | $600 thousand | 0 | 0 | Forecast zone | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | $15 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $110 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | $50 thousand | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | none | 0 | 0 | County | |
| Flash Flood | not recorded | $10 thousand | 0 | 0 | County | |
| Flood | not recorded | none | 0 | 0 | Forecast zone |
The table has all other events on record. A damage figure is an estimate in the NCEI record.
Official channels
- NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
- National Weather Service: Cleveland, OH (opens in a new tab)The forecast office that issues the weather warnings for the county.
- FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.
These links open the pages of the agencies. The site checked the links on .
Cite this page
County Hazards. "Flood events on record for Ottawa County, Ohio". https://countyhazards.com/county/oh/ottawa/flood/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on .
Questions
- Which month has the most flood events on record for Ottawa County?
- June has 16 of the 38 flood events on record from 1996 through 30 Jun 2026.
- How many flood events are on record for Ohio?
- NCEI has 6,794 flood events on record for Ohio from 1996 through 30 Jun 2026. That count has every forecast zone of the state.
- How does Ottawa County compare with the other counties of Ohio?
- The counties of Ohio have 16.6 flood events for each 100 square miles. Ottawa County has 14.9.
- Why are some flood events on record for a forecast zone?
- NCEI records some event types for a National Weather Service forecast zone and not for a county. This page counts a zone event when the zone has the name of the county.