accident. here s abc s kayna whitworth. reporter: tonight, the fallout after that terrifying moment at a newly opened water park in northern california. watch, as a 10-year-old boy launches down this 80-degree drop from three stories up, then straight over the edge of the slide. surprisingly, he walked away with only minor scrapes and bruises. i would be worried about those two slides because they are really steep. reporter: the heart-stopping incident happened just 90 minutes into the wave water park s grand opening on saturday the slide, called the emerald plunge, was immediately shut down, along with two other slides. we are going to do everything we can to make sure that doesn t happen again. reporter: the city of dublin, which owns the park, said inspectors from the state and the slide s manufacturer were at the $43 million complex, which is still operating other attractions. i m way too scared to ryan that.