(Trent Nelson | The Salt Lake Tribune) Firefighters, public works employees, and volunteers fill sandbags in South Salt Lake after heavy rains on Wednesday, Aug. 18, 2021.(Trent Nelson | The Salt Lake Tribune) Firefighters, public works employees, and volunteers fill sandbags in South Salt Lake after heavy rains on Wednesday, Aug. 18, 2021.(Trent Nelson | The Salt Lake Tribune) Firefighters, public works employees, and volunteers fill sandbags next to a swollen Mill Creek in South Salt Lake after heavy rains on Wednesday, Aug. 18, 2021.(Trent Nelson | The Salt Lake Tribune) rain on Wednesday, Aug. 18, 2021.