Green River (KY) near Mammoth Cave, KY
River level and flood forecast · Edmonson County
The river is 23.2 ft below flood stage (32 ft).
Forecast to hold near 8.8 ft through Thu, Oct 15, 1 PM.
Flow: 329 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 9:45 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 62 ft |
| Moderate flood stage | 57 ft |
| Flood stage | 32 ft |
| Action stage | 20 ft |
| Record crest (April 6, 2025) | 59.66 ft |
What floods at each level
From the National Weather Service, highest first.
- 52 ftCave tours that use the lower levels of the cave are closed.
- 42 ftEcho River Spring Trail and parking lot are under water and not accessible.
- 32 ftGreen River Ferry closes to all traffic due to high water.
- 20.1 ftLaunching of paddle craft is prohibited.
- 20 ftGreen River Ferry closes to RV and trailer traffic due to high water. Heavy loads will be at the judgment of the ferry operator considering the 12 ton load limit of ferry. Backcountry camping on the Green River floodplain is prohibited.
Highest crests on record
- 59.66 ft — April 6, 2025
- 52.46 ft — February 18, 2025
- 50.94 ft — March 3, 2021
- 42.62 ft — February 26, 2019
- 38.04 ft — December 19, 2019
Recent crests: 59.66 ft (April 6, 2025) · 52.46 ft (February 18, 2025) · 50.94 ft (March 3, 2021) · 38.04 ft (December 19, 2019) · 42.62 ft (February 26, 2019)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MMCK2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.