![]() Spring and Fall: Hike with multiple layers that can be removed and added as needed as the outside air temperature changes. Although you'll probably hike in shorts, take extra warm clothing for each member of your group. Average summer water temperatures range from 56° to 68° Fahrenheit (13° to 20° Celsius). Summer: Even in mid-summer, the temperature of the river can be cool. If you had to spend an unplanned night in the canyon due to an injury, how prepared would you and your group be? Clothing made of wool or synthetic fibers has the best insulation. Regardless of the time of year, always take additional warm clothing stored in a dry waterproof bag. Year-Round: The temperature of the water in the Virgin River is often colder than the outside air temperature, breezes blow steadily, and very little sunlight penetrates to the canyon floor. Trekking poles can be also be used to check and measure water level depth when the river is cloudy with sediments. Trekking poles are highly recommended and will help you maintain balace. Inappropriate footwear often results in twisted ankles and crushed toes. Sandals and bare feet are not appropriate. Hiking boots with good ankle support are best. It requires balancing on algae-coated rocks in the middle of a swiftly flowing river. Hiking in the Virgin River is like walking on slippery bowling balls. Water should be filtered directly from spring orifices. Do not drink from in-stream water no known filtration methods are effective at reducing toxin levels safe for drinking. The risk of exposure increases during and immediately after any precipitation events. Cyanotoxins may cause illness and/or death if ingested or absorbed through an opening in the skin. In remote Wilderness areas, current cyanotoxin conditions may be unknown. Water collected in the wilderness is not safe to drink without treatment.Īll hikers should be aware that there may be a risk of cyanotoxin exposure when recreating in water in Zion. Water flow at natural springs can vary, check for information at visitor centers. Water is available at visitor centers, campgrounds, and the Zion Lodge. The Virgin River Narrows will be closed when the National Weather Service issues a Flash Flood WarningĬarry enough water, one gallon per person per day, and drink it. A possible or probable flash flood potential should be a serious cause for concern. Despite the forecast, flooding is possible at any time, and floods have occurred on days they were not expected. Water levels usually drop within 24 hours. Remain on high ground until conditions improve. Even climbing a few feet may save your life. If you observe any of these signs, seek higher ground immediately. Sudden changes in water clarity from clear to muddy. ![]() Build up of clouds or sounds of thunder.Any deterioration in weather conditions.Watch for these indications of a possible flash flood: If bad weather threatens, avoid traveling in a slot canyon. Continuously evaluate weather conditions. They are stating that 30 percent of the forecast area will be affected by measurable precipitation. When the National Weather Service states that there is a 30 percent chance of rain, they are not stating that there is a 30 percent chance that it will rain. PROBABLE: Some slot canyons are expected to experience flash flooding.ĮXPECTED:Many slot canyons are expected to experience flash flooding.įlash floods can occur during periods when they are not expected. POSSIBLE:Some slot canyons may experience flash flooding. NOT EXPECTED: Flash Flooding is not expected. Example of a National Weather Service Flash Flood Forecast for southern Utah.
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