I agree with Elise. Couldn’t find anything concrete but Grand Canyon and Yosemite are typically the top 2. Zion is growing in visitors. But my guess would be Grand Canyon np
Great video! Very informative. As to the question asked about SAR calls, in 2022, the stats have not been officially released as of yet. I could only get stats for 2018-2020, and believe me, I searched! Anyway, from 2018-2020, Grand Canyon National Park had the highest number of SAR calls, at a staggering 785 calls.
I have had the same issue with gathering data; I even emailed the NPS and have not heard back- so I would go with the Grand Canyon since it is the most visited and from 2018-2020, had the most SARs incidents.