Four flash flood warnings have been issued in five days, the news release said, and rainfall received on July 11 produced the largest flood since 2011, increasing the flow volume of the river by nearly 200x.
“Your safety is your responsibility. Much like walking on a cliff with high winds, or going above the treeline with a stormy forecast, hiking in a narrow canyon with a chance of rain is a significant risk,” the news release said. “If you plan a hike such as the Narrows from July-Sept., have a backup plan. There are many trails and locations in Zion which are better options during flood risks.”
It is not advised to enter any narrow canyon when there is a chance of rain or a possibility of a flood, officials said. “Possible” ratings and seemingly-low chances of rain have produced dangerous conditions in canyons. When a flash flood warning is issued, all slot canyons and the Narrows are closed.
“It has been a chaotic week, but there is a silver lining,” the news release goes on. “No flood-related injuries have been reported, largely in part to good decision-making. Enjoy Zion during this dramatic rainy season, but make your trip a safe one.”
To check flood potential, click here.