How high tech and real estate team up to protect cities from flooding

8:24 AM ET Thu, 18 Oct 2018

As rainfall becomes heavier and localized flooding more pervasive and destructive, entrepreneurs are stepping up. New companies are employing high-tech and the cloud to manage what comes out of clouds. With the information, they are able to repurpose real estate to retain and redirect the water. CNBC’s Diana Olick reports.