River stage
Sidney, Great Miami River
- River level
- 1.29 ft
- Status
- Below flood stage
- 7-day change
- -0.28 ft
- Recent high
- 9.23 ft
- Recent low
- 0.84 ft
Last reported 2026-10-13 | NWS SIDO1
- 30-day change
- -0.45 ft
- Average
- 2.26 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 19.60 ft
In brief
The Great Miami River at Sidney, OH read 1.29 ft on Oct 13, 2026, 6.71 ft below action stage. That is 0.45 ft lower than 30 days earlier.
Source: National Weather Service gauge SIDO1
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 19.60 ft | 1913-03-25 |
| 2 | 15.91 ft | 1959-01-21 |
| 3 | 15.61 ft | 2013-12-22 |
| 4 | 14.58 ft | 1992-07-13 |
| 5 | 14.40 ft | 1927-03-20 |
| 6 | 14.40 ft | 2003-07-09 |
| 7 | 14.36 ft | 1990-12-30 |
| 8 | 14.16 ft | 2005-01-06 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 10.00 ft
The river approaches the bank on the west side of Custenborder Field. At stages above 10 feet, city officials begin flood operations.
- 11.00 ft
Custenborder Field has some flooding of perimeter areas, along with flooding occurring in low spots on Miami River Road.
- 12.00 ft
The river breaches the bank on Riverside Drive, with flooding of Custenborder Field at the east river intake. Flooding of properties occurs along the river on Riverside Drive from the B and K Root Beer stand to the city limits.
- 13.00 ft
Water approaches properties along Canal Street in Port Jefferson, with flooding worsening in Custenborder Field in Sidney. Flooding impacts yards and parking lots along Riverside Drive. Flooding extends through much of Berger Park. Flooding encroaches to near mobile homes along Brooklyn Avenue on the east side of the Great Miami.
- 14.00 ft
Several homes and businesses are impacted on the east side of Sidney, as well as Port Jefferson.
- 14.60 ft
The river breaches the west bank on County Road 25A South. County Road 25A near the cemetery will flood north to under the Big Four Bridge where the Jersey barriers are located.
- 16.00 ft
Flooding continues along Riverside Drive and Custenborder Field. In addition, flooding worsens along County Road 25A, near the cemetery, north to the Big Four Bridge. Downstream of Sidney, flooding worsens in Shelby County along the river.
- 18.02 ft
The river breaches the Jersey barriers on South Ohio Avenue in front of the Big Four Bridge. Flooding occurs along Crescent Drive, South Ohio and Brooklyn Avenue.
- 18.54 ft
The river will breach city flood wall with the entire south end of the city flooded. Downstream in Miami County, major flooding occurs with numerous homes and businesses impacted.
- 19.60 ft
This will reach the flood of record of 1913. Much of the City of Sidney would be inundated, as well as areas along the river through Shelby County. Hundreds of homes and businesses would be inundated.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Great Miami River flooding at Sidney?
No. The Great Miami River at Sidney is at 1.29 ft, 6.71 ft below action stage.
What is the flood stage at Sidney?
The National Weather Service sets action stage 8 ft, minor flooding 10 ft, moderate flooding 14.6 ft and major flooding 18 ft.
What is the highest the Great Miami River has been at Sidney?
The highest crest on record is 19.6 ft, on 1913-03-25.
Is the Great Miami River high or low right now at Sidney?
At 1.29 ft it is higher than 32% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge SIDO1); daily history from the U.S. Geological Survey (site 03261500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.