...The National Weather Service in La Crosse WI has issued a Flood Watch for the following rivers in Wisconsin... Black River Near Galesville affecting Trempealeau and La Crosse zones. ...The Flood Watch is extended for the following rivers in Wisconsin... Black River at Black River Falls affecting Jackson County. .Thunderstorms are expected to develop across much of the Black River drainage basin Monday evening through the overnight hours. These river forecasts take into account an expected