Is there bacteria at the Narrows at Zion?

Scientists have discovered cyanobacteria in Zion at the bottom of the Virgin River and its tributaries. Benthic cyanobacteria are the sort of cyanobacteria found adhering to river bottoms. On rocks, plants, along the banks of rivers, and on the river's edge, benthic cyanobacteria flourishes.



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You cannot safely drink the water from the river on the Narrows hike in Zion. The Virgin River experiences blooms of cyanobacteria and cyanotoxins— really dangerous toxins in novice terms.

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Toxic cyanobacteria and cyanotoxins have been detected in water throughout Zion National Park. Cyanobacteria is more commonly known as “blue green algae,” and its cyanotoxins can cause harm to humans and animals if touched or ingested.

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The NPS has advised visitors against swimming or submerging their heads in the affected Zion waterways and warned people not to drink water from anywhere in the park. The watches and warnings extend to popular areas of the park, including The Narrows and Emerald Pools.

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Leeches are unique to Zion because they are an important food source to other animals. Leeches are eaten by many other animals which helps keep animals from starving.

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In the early spring and late fall months, neoprene socks, pants or bib overalls, or a wetsuit may be necessary to hike in the river.

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Most people hike The Narrows in the summer and early fall when the water tends to be at its warmest and the water level drops. However, life-threatening flash floods are possible at any time and are common during the monsoon season.

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Pee - Whenever possible, pee directly into the flowing water of the river. The smell of your urine, on land, will persist for months. At the very least, carry a ziplock bag to pack out your toilet paper. Water – There is reasonable water for drinking almost every step of The Narrows – literally.

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Just a quick walk from the Zion Campgrounds, our public shower facility is located on the bottom floor of the shop and remains open during operating business hours. Showers are operated by tokens which can be purchased at the front desk. Public soap and towels are not available but may be purchased if needed.

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1. Virgin River Swimming Hole. The Virgin River Swimming Hole is probably the most popular spot to swim in Zion.

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The entire hike is 16 miles long. From the top-down, the hike begins at Chamberlain's Ranch and the Narrows ends 15 miles later at the top end of the Riverside Walk. One more mile of walking on the Riverside Walk gets you to the finish line of the hike, the Temple of Sinawava.

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Seeing an American Black Bear in Zion National Park is rare but not unheard of. Since bear sightings are so rare each one, even a possible siting, should be reported to park officials. It is important to know the procedure for bear encounters on the off chance that you may see one.

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