19-Year-Old Hiker Dies After Being Swept Away by Fast-Moving River

Cynthia Ann Grimwood's body was found near Horsetail Falls, Utah, after her phone captured the incident.

Authorities believe Grimwood underestimated the river's speed and strength.
Her belongings and dog were discovered by other hikers, prompting a search.
Rescue teams located her body but had to wait until the next day to recover it safely.
The water was exceptionally high and cold due to snowmelt, making conditions treacherous.
Officials advise caution around natural water sources, especially during high flow periods.