Great Miami River at Sidney

Last updated: Jun 24, 2025, 10:24 AM UTC

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Miami Conservancy/USGS
Observations courtesy of U.S. Geological Survey

Scale to Flood Categories

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Traces and Thresholds Click to turn on/off display

Observed (OBS) 06/24/2025 5:30 AM EDT

Official Forecast (FCST) 06/23/2025 9:38 AM EDT

Record: 19.6 ft

CATEGORY STAGE

Major Flooding 18 ft

Moderate Flooding 14.6 ft

Minor Flooding 10 ft

Action 8 ft

Reliability of the Forecast:

NOTE: Forecasts are issued routinely year-round.

River Forecasts typically include ONLY 2 days of future rain from forecast issuance time (lower right of graph). Occasionally 3 days of future rain included.
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	CATEGORY	STAGE
	Major Flooding	18 ft
	Moderate Flooding	14.6 ft
	Minor Flooding	10 ft
	Action	8 ft

Flood Impacts 🅘

19.6 - 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.
18.54 - 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.
18.02 - 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.

Gauge Info

Coordinates	40.2869, -84.1499
RFC	OHRFC
State	OH
WFO	ILN
County	Shelby
Data Provider(s)
Miami Conservancy/USGS	USGS--Water Resources of the United States
USGS	03261500

Gauge Location

Recent Crests

1.	12.74 ft	on 04-03-2024	(P)
2.	10.86 ft	on 03-04-2023	(P)
3.	10.35 ft	on 03-07-2022	(P)
4.	11.62 ft	on 03-29-2020	(P)
5.	11.03 ft	on 06-21-2019

Historic Crests

1.	19.60 ft	on 03-25-1913
2.	15.91 ft	on 01-21-1959
3.	15.61 ft	on 12-22-2013
4.	14.58 ft	on 07-13-1992
5.	14.40 ft	on 03-20-1927

Vertical Datum Table

type	NAVD88
major Flooding	941.68 ft
moderate Flooding	938.28 ft
minor Flooding	933.68 ft
action	931.68 ft
Latest Value	925.09 ft
Gauge Zero	923.68 ft

Gauge Photos

Photo 1 of 1

topo map of Sidney gage area

Probability Information

Photo 1 of 3

Short Range Forecast Uncertainty
About this graph | Product Description Document
Weekly Chance of Exceeding Levels
- About this graph
Chance of Exceeding Levels During Entire Period
- About this graph

Unique Local Info

Potential River Levels - Used to

Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS)	10 Day (NAEFS)	River Forecast VS. River Potential

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

See the Product Description Document link for more details on the interpretation of the 10 day graphics.

Click individual graphics to enlarge.

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

Resources

Hydrologic Resource Links

Additional Resource Links

WFO Information

Weather Forecast Office

Wilmington

1901 South State Route 134

Wilmington, OH 45177

(937) 383-0031

Ask Questions/Webmaster

Official Homepage

1.	12.74 ft	on 04-03-2024	(P)
2.	10.86 ft	on 03-04-2023	(P)
3.	10.35 ft	on 03-07-2022	(P)
4.	11.62 ft	on 03-29-2020	(P)
5.	11.03 ft	on 06-21-2019
6.	10.87 ft	on 06-18-2019
7.	11.83 ft	on 05-18-2019
8.	10.90 ft	on 02-08-2019
9.	12.55 ft	on 04-04-2018
10.	10.00 ft	on 02-25-2018
11.	11.90 ft	on 11-19-2017
12.	11.02 ft	on 12-29-2015
13.	12.18 ft	on 06-17-2015
14.	10.36 ft	on 02-21-2014
15.	10.83 ft	on 02-21-2014
16.	15.61 ft	on 12-22-2013
17.	10.26 ft	on 12-06-2011
18.	12.51 ft	on 03-05-2011
19.	13.18 ft	on 02-28-2011
20.	10.01 ft	on 03-20-2008
21.	11.14 ft	on 03-05-2008
22.	9.99 ft	on 02-08-2008
23.	11.48 ft	on 02-07-2008
24.	10.98 ft	on 01-09-2008
25.	11.33 ft	on 03-23-2007
26.	12.04 ft	on 03-02-2007
27.	11.04 ft	on 01-15-2007
28.	12.02 ft	on 12-01-2006
29.	12.30 ft	on 01-14-2005
30.	13.62 ft	on 01-12-2005
31.	14.16 ft	on 01-06-2005
32.	8.33 ft	on 05-21-2004
33.	10.63 ft	on 01-05-2004
34.	8.95 ft	on 11-28-2003
35.	10.47 ft	on 09-01-2003
36.	14.40 ft	on 07-09-2003
37.	9.44 ft	on 12-18-2001
38.	9.07 ft	on 05-19-2001
39.	8.42 ft	on 04-08-2000
40.	13.64 ft	on 08-08-1995
41.	14.58 ft	on 07-13-1992
42.	14.36 ft	on 12-30-1990
43.	10.54 ft	on 02-15-1990
44.	9.58 ft	on 05-26-1989
45.	5.85 ft	on 02-02-1988
46.	11.15 ft	on 02-23-1985
47.	11.78 ft	on 06-14-1981
48.	10.47 ft	on 06-03-1980
49.	11.69 ft	on 02-24-1975
50.	11.80 ft	on 04-20-1964
51.	12.36 ft	on 03-06-1963
52.	15.91 ft	on 01-21-1959
53.	12.18 ft	on 06-10-1958
54.	11.50 ft	on 06-27-1957
55.	12.43 ft	on 01-27-1952
56.	11.04 ft	on 12-03-1950
57.	12.84 ft	on 01-16-1950
58.	10.26 ft	on 01-05-1949
59.	10.64 ft	on 04-13-1948
60.	10.45 ft	on 06-02-1947
61.	10.72 ft	on 06-18-1945
62.	10.40 ft	on 04-11-1944
63.	12.00 ft	on 03-19-1943
64.	12.38 ft	on 01-15-1937
65.	13.48 ft	on 05-13-1933
66.	12.20 ft	on 01-13-1930
67.	13.60 ft	on 02-26-1929
68.	10.70 ft	on 12-14-1927
69.	14.40 ft	on 03-20-1927
70.	11.10 ft	on 09-05-1926
71.	12.62 ft	on 03-29-1924
72.	10.50 ft	on 04-17-1922
73.	12.80 ft	on 04-21-1920
74.	10.50 ft	on 03-28-1920
75.	10.40 ft	on 01-31-1916
76.	19.60 ft	on 03-25-1913

1.	19.60 ft	on 03-25-1913
2.	15.91 ft	on 01-21-1959
3.	15.61 ft	on 12-22-2013
4.	14.58 ft	on 07-13-1992
5.	14.40 ft	on 03-20-1927
6.	14.40 ft	on 07-09-2003
7.	14.36 ft	on 12-30-1990
8.	14.16 ft	on 01-06-2005
9.	13.64 ft	on 08-08-1995
10.	13.62 ft	on 01-12-2005
11.	13.60 ft	on 02-26-1929
12.	13.48 ft	on 05-13-1933
13.	13.18 ft	on 02-28-2011
14.	12.84 ft	on 01-16-1950
15.	12.80 ft	on 04-21-1920
16.	12.74 ft	on 04-03-2024	(P)
17.	12.62 ft	on 03-29-1924
18.	12.55 ft	on 04-04-2018
19.	12.51 ft	on 03-05-2011
20.	12.43 ft	on 01-27-1952
21.	12.38 ft	on 01-15-1937
22.	12.36 ft	on 03-06-1963
23.	12.30 ft	on 01-14-2005
24.	12.20 ft	on 01-13-1930
25.	12.18 ft	on 06-17-2015
26.	12.18 ft	on 06-10-1958
27.	12.04 ft	on 03-02-2007
28.	12.02 ft	on 12-01-2006
29.	12.00 ft	on 03-19-1943
30.	11.90 ft	on 11-19-2017
31.	11.83 ft	on 05-18-2019
32.	11.80 ft	on 04-20-1964
33.	11.78 ft	on 06-14-1981
34.	11.69 ft	on 02-24-1975
35.	11.62 ft	on 03-29-2020	(P)
36.	11.50 ft	on 06-27-1957
37.	11.48 ft	on 02-07-2008
38.	11.33 ft	on 03-23-2007
39.	11.15 ft	on 02-23-1985
40.	11.14 ft	on 03-05-2008
41.	11.10 ft	on 09-05-1926
42.	11.04 ft	on 01-15-2007
43.	11.04 ft	on 12-03-1950
44.	11.03 ft	on 06-21-2019
45.	11.02 ft	on 12-29-2015
46.	10.98 ft	on 01-09-2008
47.	10.90 ft	on 02-08-2019
48.	10.87 ft	on 06-18-2019
49.	10.86 ft	on 03-04-2023	(P)
50.	10.83 ft	on 02-21-2014
51.	10.72 ft	on 06-18-1945
52.	10.70 ft	on 12-14-1927
53.	10.64 ft	on 04-13-1948
54.	10.63 ft	on 01-05-2004
55.	10.54 ft	on 02-15-1990
56.	10.50 ft	on 03-28-1920
57.	10.50 ft	on 04-17-1922
58.	10.47 ft	on 06-03-1980
59.	10.47 ft	on 09-01-2003
60.	10.45 ft	on 06-02-1947
61.	10.40 ft	on 04-11-1944
62.	10.40 ft	on 01-31-1916
63.	10.36 ft	on 02-21-2014
64.	10.35 ft	on 03-07-2022	(P)
65.	10.26 ft	on 01-05-1949
66.	10.26 ft	on 12-06-2011
67.	10.01 ft	on 03-20-2008
68.	10.00 ft	on 02-25-2018
69.	9.99 ft	on 02-08-2008
70.	9.58 ft	on 05-26-1989
71.	9.44 ft	on 12-18-2001
72.	9.07 ft	on 05-19-2001
73.	8.95 ft	on 11-28-2003
74.	8.42 ft	on 04-08-2000
75.	8.33 ft	on 05-21-2004
76.	5.85 ft	on 02-02-1988