Great Miami River at Piqua, OH
River level and flood forecast · Miami County
Normal1.4 ftas of Mon 3 PM
The river is 12.6 ft below flood stage (14 ft).
Forecast to hold near 1.4 ft through Sat, Oct 17, 8 AM.
Flow: 208 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:22 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 19 ft |
| Moderate flood stage | 16 ft |
| Flood stage | 14 ft |
| Action stage | 11.5 ft |
| Record crest (December 22, 2013) | 14.91 ft |
What floods at each level
From the National Weather Service, highest first.
- 28 ftMajor flooding occurs, with flood protection levees being overtopped. The area between Spring Street and the river is flooded, as well as homes and businesses south of East Main Street and West of Staunton Street on the east bank of the Great Miami. Homes and businesses along Rush Creek in Springcreek Township incur major backwater flooding.
- 27 ftWater is very close to over topping flood protection levees. Water approaches homes along Riverside Drive in North Piqua. Route 25A north of the river is flooded, with several feet of water flooding homes and structures along Piqua Lockington Road and North Dixie Drive, with both roads flooded. The wastewater treatment plant is flooded, as well as stretches of Bridge Street and South Main street, with mobile homes and businesses flooded by several feet of water.
- 25 ftStretches of 25A north and south of town are flooded, as well as South Main Street, with homes and structures flooded by several feet of water. Similar significant flooding occurs along the road and in structures along Piqua Lockington Road and North Dixie Srive. The wastewater treatment plant is flooded, as well as stretches of Bridge Street. The levee protected areas of Piqua do not flood until a river stage just above 27 feet.
- 24 ftSignificant flooding of businesses and mobile homes occurs along South Main Street, south of Garnsey Street. Homes along Piqua Lockington road incur major flooding. Miami Conservancy Protected areas are not impacted until a stage of 29 feet. In addition, backwater flooding occurs in Springcreek Township along Rush Creek, with major flooding of homes along Piqua Lockington Road.
- 23 ftSouth Main Street is flooded south of Garnsey Street, with flooding of businesses and a mobile home community between South Main Street and the river. Several feet of water floods structures on either side of Piqua Lockington Road and North Dixie Drive. Areas within the Miami Conservancy Flood protection are protected to a stage just above 27 feet.
- 21 ftSouth Main Street is flooded from route 115 to Fox Drive, with significant flooding of businesses and a mobile home community between South Main Street and the river, below Garnsey Street. In addition, backwater flooding occurs in Springcreek Township along Rush Creek, with several feet of water in homes along Piqua Lockington Road and structures flooded along North Dixie Drive. Areas within the Miami Conservancy Flood protection are protected to a stage just above 27 feet.
- 20 ftMuch of the Piqua Wastewater treatment plant is flooded, with several feet of water in homes along Piqua Lockington Road and structures along North Dixie Drive and south Main Street near Bridge Street. Water also approaches mobile homes along South Main Street. Levee protected areas of Piqua do not flood until stages just above 27 feet.
- 19 ftThis is approximately the FEMA 1 percent flood level. The Piqua Wastewater treatment plant is flooded, with several feet of water in homes along Piqua Lockington Road and structures along North Dixie Drive and south Main Street near Bridge Street. Levee protected areas of Piqua do not flood until stages just above 27 feet.
- 18 ftHomes along Piqua Lockington road are flooded by 1-3 feet of water, with the road itself also flooded, as well as Rush Creek backwater flooding along North Dixie Drive. Some structures are flooded between South Main Street and the river, between Garnsey Street and Hemm Avenue. Flood waters approach Route 25A near Farrington Road. Flood water approaches the Waste Water Treatment plant property. The Miami Conservancy District levee protected area does not flood until a river stage of just above 27 feet.
- 17 ftSeveral structures are flooded or surrounded by 1-2 feet of water on both sides of Piqua Lockington Road, as well as flooding along portions of North Dixie Drive and Gates Drive. Flooding of low lying areas near Bridge Street also occurs. The Miami Conservancy District levee protected area does not flood until a river stage of just above 27 feet.
- 16 ftSome structures are flooded or surrounded by 1-2 feet of water on both sides of Piqua Lockington Road, as well as flooding along portions of North Dixie Drive and Gates Drive. Flooding of low lying areas near Bridge Street also occurs. The Miami Conservancy District levee protected area does not flood until a river stage of just above 27 feet.
- 15 ftFlooding of the alleyway and garages of homes along Piqua Lockington Road occurs, with nearly 1 foot of flood water flooding basements and garages in this area. The Miami Conservancy District levee protected area does not flood until a river stage of just above 27 feet.
- 14 ftWater approaches the back side of homes along the river on Piqua Lockington Road in Springcreek Township.
Highest crests on record
- 14.91 ft — December 22, 2013
- 14.8 ft — January 21, 1959
- 14.2 ft — August 8, 1995
- 13.8 ft — December 30, 1990
- 13.8 ft — July 9, 2003
Recent crests: 13.27 ft (April 6, 2025) · 11.75 ft (March 29, 2020) · 12.65 ft (April 3, 2018) · 11.35 ft (December 29, 2015) · 11.38 ft (June 18, 2015)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (PIQO1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.