...The Flood Warning continues for the following rivers in Kansas... Black Vermillion River near Frankfort affecting Marshall County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Black Vermillion River near Frankfort. * WHEN...Until tomorrow morning. * IMPACTS...At 19.0 feet, Minor flooding of lowland areas occurs along the river from Vermillion to the mouth of the Black Vermillion River. * ADDITIONAL DETAILS... - At 8:30 AM CDT Thursday the stage was 19.0 feet. - Forecast...The river is expected to rise to a crest of 20.6 feet this afternoon. It will then fall below flood stage this evening. - Flood stage is 19.0 feet.