While the theory of first flush is straightforward, first flush may not be observed for one or more of the following reasons: 1  The drainage characteristics of the catchment may prevent it. 2  The pollutants may not be very mobile. 3  Pollutant sources that are effectively continuous may exist within the catchment.
Jenna Dewan Tatum to Host and Mentor for Jennifer Lopez's NBC Show World of Dance. Looks like Jenna Dewan Tatum has nabbed a new gig for the new year â sheâll serve as the host of Jennifer Lopezâs NBC show World of Dance. The 36-year-old actress and dancer joins judges Derek Hough, NE-YO and Lopez on the 10-episode series, which features dancers competing for a $1 million grand prize, according to Deadline Hollywood.
Jennifer Lopez Teases New 'World of Dance' Series, Reveals Jenna Dewan Is Hosting. by 11:28 AM PST, January 05, 2017. Playing Jennifer Lopez Teases New 'World of Dance' Series, Reveals Jenna Dewan Is Hosting. Jennifer Lopez's new dance competition show, World of Dance, is already shaping up to be pretty epic! The 47-year-old singer took to Instagram on Wednesday, giving fans a sneak peek look at what's to come on the NBC series, while also revealing the show's host, Jenna Dewan Tatum.