Today's (Tuesday) rain was a relief to many in Sioux (SOO) Falls. For a few hours in the middle of the day, the skies turned grey and the smell of rain caught everyone's attention. Sioux (SOO) Falls is four and a half inches behind normal rainfall amounts for the summer. But today's precipitation may not be enough to lift lawn watering restriction. That's because the city's main source for drinking water is drying up. Mainstreet Radio's Cara (CARE-uh) Hetland (HET land) reports: