In 1934, a drought had spread over the Midwest. June 6, the drought broke in the Siouxland area with the arrival of heavy rains. The rains continued heavy from Wednesday afternoon until Friday. By late Wednesday, the creek had overflowed its banks in several areas of the city. The Country Club area, Fifteenth and Hamilton, and Twelfth and Sioux Street were the hardest hit. Like the 1892 Floyd flood, a wall of water rolled into the city forcing the evacuation of 350 families from their homes. The Fourth Street business area was covered with water from Clark to the creek. By the time the water receded more than 600 families had been forced from their homes. Twenty-five homes had been totally destroyed. One home had been ripped from its foundation and floated down the creek, through the conduit, and out into the Missouri. Thankfully no one was killed but damage to property was substantial: estimated to be between three and five hundred thousand dollars.

In 1949, Sioux City had avoided a spring flood by dynamiting ice jams on the Floyd River north of the city. The September 11 flood caught everyone by surprise. Yet another heavy rain caused rapid rise in the creek overflowing its banks. Sewers that emptied into the creek backed up flooding many basements. Many basements in the Crescent Park area had more than three feet of water standing in them. Part of the newly constructed Gordon Drive was washed away.