Tioughnioga River at Cortland
Critical Stages
7' - Action
8' - Flood
10' - Moderate
12.5' - Major
Latest Observation
Updated: 8:00 AM EST 12/6/25
Status: No Flooding
Stage: 3.56 ft
Flow: 0.328 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1 PM 12/6 | 3.6 | 0.349 |
| 7 PM 12/6 | 3.5 | 0.298 |
| 1 AM 12/7 | 3.5 | 0.298 |
| 7 AM 12/7 | 3.5 | 0.298 |
| 1 PM 12/7 | 3.5 | 0.298 |
| 7 PM 12/7 | 3.5 | 0.298 |
| 1 AM 12/8 | 3.5 | 0.298 |
| 7 AM 12/8 | 3.5 | 0.298 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 8:00 AM 12/6 | 3.56 | 0.328 |
| 7:45 AM 12/6 | 3.56 | 0.328 |
| 7:30 AM 12/6 | 3.56 | 0.328 |
| 7:15 AM 12/6 | 3.57 | 0.333 |
| 7:00 AM 12/6 | 3.57 | 0.333 |
| 6:45 AM 12/6 | 3.57 | 0.333 |
| 6:30 AM 12/6 | 3.57 | 0.333 |
| 6:15 AM 12/6 | 3.57 | 0.333 |
| 6:00 AM 12/6 | 3.57 | 0.333 |
| 5:45 AM 12/6 | 3.57 | 0.333 |
| 5:30 AM 12/6 | 3.57 | 0.333 |
| 5:15 AM 12/6 | 3.57 | 0.333 |
| 5:00 AM 12/6 | 3.57 | 0.333 |
| 4:45 AM 12/6 | 3.57 | 0.333 |
| 4:30 AM 12/6 | 3.57 | 0.333 |
| 4:15 AM 12/6 | 3.57 | 0.333 |
| 4:00 AM 12/6 | 3.57 | 0.333 |
| 3:45 AM 12/6 | 3.57 | 0.333 |
| 3:30 AM 12/6 | 3.57 | 0.333 |
| 3:15 AM 12/6 | 3.57 | 0.333 |
| 3:00 AM 12/6 | 3.57 | 0.333 |
| 2:45 AM 12/6 | 3.57 | 0.333 |
| 2:30 AM 12/6 | 3.57 | 0.333 |
| 2:15 AM 12/6 | 3.56 | 0.328 |
| 2:00 AM 12/6 | 3.56 | 0.328 |
| 1:45 AM 12/6 | 3.56 | 0.328 |
| 1:30 AM 12/6 | 3.56 | 0.328 |
| 1:15 AM 12/6 | 3.56 | 0.328 |
| 1:00 AM 12/6 | 3.55 | 0.323 |
| 12:45 AM 12/6 | 3.55 | 0.323 |
14.07' -
Record flood of April 2005. Widespread inundation and major flood damage occurred along the river from Cortland to Marathon.
13.02' -
Severe flooding occurs in areas from the City of Cortland to Marathon with 3-4 feet of water covering many city streets in Cortland. Residents in the Kennedy Parkway area are cutoff by floodwaters. This is the level of the January 1996 rain and snow melt flood.
12.5' -
Major flood stage. Severe flooding occurs in the Village of Marathon with 4-6 feet of water covering most of the streets in town. Many homes and businesses are inundated to the first floor. Widespread basement flooding occurs in the City of Cortland along River Street and the Yaman Park area.
11.5' -
Widespread, serious flooding occurs in cellars and up to the first floor of homes and businesses in Marathon. Cellar flooding occurs on the east side of Cortland near Yaman Park. Kellogg Road is covered by water 3-6 feet deep in spots.
10' -
Moderate flood stage. Some flooding begins to affect roads and basements in the Village of Marathon and the Yaman Park area of Cortland.
8' -
Minor flood stage. Flooding leads to some closures along Kellogg Road to the south of Cortland.
7' -
The river spills it/s banks into the low lying flood plain. No impact occurs at this stage.
| Date | Stage (ft) |
|---|---|
| Apr 3, 2005 | 14.07 |
| Apr 5, 1950 | 13.82 |
| Dec 31, 1942 | 13.56 |
| Apr 5, 1956 | 13.54 |
| Mar 31, 1960 | 13.52 |
| Apr 9, 1940 | 13.33 |
| Jan 20, 1996 | 13.02 |
| Feb 26, 1961 | 13 |
| Mar 12, 1955 | 12.77 |
| Mar 17, 1943 | 12.73 |
| Mar 20, 1948 | 12.73 |
| Oct 28, 1981 | 12.5 |
| Mar 5, 1964 | 12.49 |
| Apr 6, 1941 | 12.49 |
| Mar 6, 1979 | 12.42 |
| Mar 22, 1948 | 12.4 |
| Mar 17, 1945 | 12.28 |
| Apr 11, 1993 | 12.25 |
| Apr 3, 1959 | 12.19 |
| Apr 7, 1947 | 12.16 |
Data provided by the National Weather Service.
