North Fork Virgin River at the Temple of Sinawava. There had been dramatic flash floods in the days prior, and the usually crystal clear water was today exceptionally muddy.

The Virgin River is a tributary of the Colorado River in the U.S. states of Utah, Nevada, and Arizona. The river is about 162 miles (261 km) long. It was designated Utah's first wild and scenic river in 2009, during the centennial celebration of Zion National Park.

Its origin is in Southwestern Utah, at the Navajo Reservoir in the Dixie National Forest, north of Zion National Park, and is formed by the confluence of the East Fork Virgin, that flows through Mount Carmel Junction on the east side of Zion National Park and Parunaweap Canyon, with the North Fork Virgin River, that flows from Navajo Lake through Zion Canyon in Zion National Park. The river flows in a southwesterly direction, passing south of the old townsite of St. George where the Santa Clara River joins the Virgin at a place the Paiutes called Tonaquint. The river then flows across the northwestern corner of Arizona through the Virgin River Gorge and past the towns of Beaver Dam and Littlefield. It enters southern Nevada near the town of Mesquite and empties into the Colorado at the Lake Mead reservoir, approximately 40 miles (64 km) east of Las Vegas. The last 30 miles (48 km) of the Virgin River forms the north arm of Lake Mead.

en.wikipedia.org/wiki/Virgin_river