will likely reach major flood stage Advanced Hydrologic Prediction Service Advanced Hydrologic Prediction Service Current River Levels St. Louis 6th highest recorded crest Mississippi River At St. Louis Current River Levels St. Louis Gauge Mississippi River Mississippi River NOAA river level forecast National Weather Service Current River Levels -5 feet at St. Louis National Weather Service National Weather Service predictions National Weather Service Forecast - EADM7 - Mississippi River at St. Louis (Missouri)