Thank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged inJump to contentNewsBookmark A deadly flash flood in the Grand Canyon forced visitors to evacuate and destroyed its only water pipeline. The national park can be dangerous in summer, when monsoon season brings the risk of sudden thunderstorms and flooding.Thank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in