Water flows quickly down Big Sioux River toward Union County - KSFY News - Sioux Falls, SD News, Weather, Sports

Water flows quickly down Big Sioux River toward Union County

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 Flood water levels are going down in communities around Sioux Falls but they're expected to rise further south. Now, Union County is preparing for what Governor Dennis Daugaard says could be a "record flood event" along the Big Sioux River.

Crews began sandbagging along Interstate 29 and shutting down a portion of it near North Sioux City as part of a plan to control the flood.

This flood prevention plan involves diverting water over I-29 where it will eventually be sent to McCook Lake.

All four lanes of the interstate will be closed by noon and traffic will be re-routed at Vermillion, Exit 26.

KSFY Morning News was live along the Big Sioux in Sioux Falls where water is flowing heavily and quickly downstream on its way to communities in Union County. 

Many are calling it the 'calm before the storm' but they've seen it before during the Missouri River flood of 2011. 

Wednesday night, a meeting at Dakota Valley High School prepared homeowners for what could come. They were there ready and willing to do whatever it takes to keep their neighborhoods and homes safe and dry. 

Governor Dennis Daugaard has activated more than 120 soldiers with the South Dakota National Guard to help with flood relief operations. Members of the Red Cross Siouxland are also on-hand to assist. 

"I hate the term 'it is what it is', but we're all afraid about the water and will the levies hold they're building more levies right now around the Big Sioux River," 

"We're just moving stuff down to safer location at the skid loader the tractor ready if it's a trailer to other trailers ready to move," Cheryl and Eugene Flynn said. 

According to the NOAA (National Oceanic and Atmospheric Administration), the Big Sioux River at flood stage is 99 feet. Building sandbags and protecting property is essential when the river is expected to rise to 108 feet. 

They expect the river to crest noon on Friday at 109 feet. 

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