The National Weather Service has issued a flood warning that begins Tuesday afternoon for the Minnesota River at Mankato.
Late Monday morning the stage reached 19.4 feet and meteorologists say the river is expected to continue to rise to near 24.1 feet – with additional rises possible thereafter.
The NWS says Highway 169 between St Peter and Mankato will be impacted in several locations if the river reaches 25 feet, including:
- U.S. 169 just north of St Peter at Rogers Creek or locally known as Robarts Creek.
- The Highway 22 bridge south of St. Peter would be closed.
The impact at 24.5 feet:
- Highway 99 east of St Peter would close.
At 21.0 feet:
- Dike patrolling will begin in Mankato.
At the Cottonwood River above Springfield in Brown County a flood warning has also been declared. Forecasters say that’s based on expected snowmelt and possible ice jamming. They expect the river to continue rising to near 29.7 feet and say additional rises may be possible. The river is already at major flood stage in New Ulm and is currently cresting at over 17 feet.
The Flood Warning begins for the Minnesota River at Henderson state Highway 19 late Monday night and the NWS says minor flooding is forecast. If it surpasses flood stage Highway 22 east of St. Peter could be closed, and the water could also shut down Highway 93 between Henderson and Highway 169. Water may also begin encroaching on Highway 19 east of Henderson.