10/12/2026
A little awareness goes a long way in the outdoors.
The Narrows in Zion National Park is an incredible place to explore, but hereās something worth knowing before you go:
The Virgin River has documented occurrences of cyanobacteria, sometimes called blue-green algae. Some types can produce toxins that may be harmful to people and pets.
So, what does that mean for your next adventure?
š§ Donāt drink untreated river water.
š Check current Zion National Park water-quality advisories before your hike.
šŖØ Avoid touching or disturbing slimy algae mats on rocks.
š¦ļø Check weather conditions and flash-flood forecasts.
š Bring plenty of drinking water and the right gear.
Knowledge isnāt meant to keep us inside. It helps us explore more responsibly. š
The goal isnāt to fear nature. Itās to respect it, stay informed, and make thoughtful choices so we can keep enjoying these incredible places.
Get outside. Stay curious. Leave it better than you found it. šāØ
š The Narrows, Zion National Park, Utah
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