You can spend hours in The Narrows, Zion National Park. It is such a stunning place to visit and you will remember for a lifetime. Sometimes you will have to wade on this trail and at the time was often above knees.
It can be wet but funny to be wading through. Remember that rocks in the water are slick and after rain you cannot see them properly, so take good shoes (not flip-flop) , take any stick to support you, waterproof bag for mobile phone and substitute dry clothes ( there is not much sun in the canyon) and do not plan to go afar – you will be really slow in the water and quickly tired.
The park itself at had very light in traffic and you can drive the scenic route and park pretty much anywhere you want.
This is a must see national park and you will be rewarded with a life long memory. We would consider this a side trip of a destination. It’s a good full day, maybe two days, if your an avid hiker.
Based on the single road in and out I would really be hesitant to make the trip in peak summer season.
How can I hike The Narrows?
A hike through The Narrows requires hiking in the Virgin River. You must get your feet wet since there is no trail. Most people choose to start their hike from the Temple of Sinawava via the Riverside Walk and then walk upstream before turning around and hiking back down to the Temple of Sinawava.
Bottom Up Hike From the Temple of Sinawava (no permit required)
Hiking in The Narrows upstream as far as Big Spring does not require a permit. Doing the hike this way allows you to see some of the most spectacular and narrowest parts of the canyon. You can hike in the river for an hour and have a great experience, or you can hike as far as Big Spring, a strenuous, ten-mile round trip, all-day adventure.
Top Down Hike from Chamberlain’s Ranch (permit required)
You can also hike sixteen miles downstream over one or two days, entering the park soon after starting the hike and then exiting at the Temple of Sinawava. Those who choose this option must get a permit and arrange transportation for the one and a half hour ride to start the hike outside the park at Chamberlain’s Ranch.
Most people hike The Narrows in the late spring and summer when the water tends to be at its warmest and the water level drops. However, this is also the time of year that storms can cause life-threatening flash floods.
Winter and early spring commonly means cold water and high water levels. The Narrows can be closed during the spring when snowmelt raises the river over 150 CFS. Fall brings more stable weather, but days get shorter and the water temperature drops. Zion Weather and Climate
Water level fluctuates greatly from year to year and day to day depending on many factors such as rainfall and snowmelt. When the river is running below 70 cubic feet per second (CFS), walking is moderately difficult, with knee deep crossings on the slippery and uneven river bottom with frequent pools up to waist deep.
When the current goes above 70 CFS, walking against the current becomes challenging and crossings of mid-thigh deep are frequent with pools that can be chest deep. If the flow goes to over 150 CFS, The Narrows will be closed to all travel. The Narrows also closes when a Flash Flood Warning is issued by the National Weather Service, and remains closed for two hours after the warning is lifted. Current River Flow
The Narrows are susceptible to flash flooding because much of the surrounding area is bare rock that does not absorb water. During storms, runoff is funneled rapidly into the Narrows. During a flash flood the water level rises almost instantly–within seconds or minutes. Flash floods are common in Zion and hikers have been stranded, injured, and even killed by venturing into narrow, flood prone canyons.