A new county study modeling post-fire flooding in the Rio de Flag shows such an event could send the same amount of water that runs down the Colorado River through the middle of Flagstaff. A draft version of the study was finished earlier this year and modeled the impacts of a 100-year storm on the Rio de Flag if it followed a large wildfire. Storms of such size are rare. A 100-year storm has a 1% chance of occurring every year, and the chances of one happening after a large wildfire is even less likely. But Flood District Director Lucinda Andreani said it is important to model as the flood district develops a forest restoration plan, identifying high impact sections of the forest that the district may want to target for restoration efforts in the future.