Weather conditions are posted at the visitor center, but flash floods can occur in the park without warning. The danger is not limited to just hiking in slot canyons. People have been washed off trails to their deaths during flash floods. Although it's gorgeous when the rain pours, it's not a safe time to be on the trails. Flood waters originate upstream, so a flood may occur when the weather does not seem bad overhead. If hiking in a narrow canyon and the water begins to rise even slightly or get muddy, begin looking for higher ground.
Remember to be careful of steep cliffs; people have died falling when they venture too close to the edge. Loose sand and pebbles on stone are extremely slippery. Be extra careful near the edge when using cameras or binoculars. Never throw or roll rocks; there may be hikers below. Stay on the trail, stay away from the edge, observe posted warnings, and if you have children with you, watch them carefully!
fees/permits
A $25 entrance fee is required for all private vehicles entering the park that is good for seven days; the America the Beautiful pass may be purchased for $80 that waives entrance fees for all federal lands for one year. Motorcycles, individuals on foot, and bicyclists are charged a $12 entrance fee. Private vehicles which only visit Kolob Canyons still need to pay the $25 entrance fee good for the whole park.