Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Yosemite National Park' has mentioned 'River' in the following places:
Occurrence Sentence Text Source
The uplift increased the steepness of stream and river beds, resulting in the formation of deep, narrow canyons.
About one million years ago, snow and ice accumulated, forming glaciers at the higher alpine meadows that moved down the river valleys.
The Merced River flowing through Yosemite Valley, a U-shaped valley
The Tuolumne and Merced River systems originate along the crest of the Sierra Nevada in the park and have carved river canyons 3,000 to 4,000 feet (910 to 1,220xc2xa0m) deep.
The Tuolumne River drains the entire northern portion of the park, an area of approximately 680 square miles (1,800xc2xa0km2).
The Merced River begins in the park's southern peaks, primarily the Cathedral and Clark Ranges, and drains an area of approximately 511 square miles (1,320xc2xa0km2).
The longest glacier in the Yosemite area ran down the Grand Canyon of the Tuolumne River for 60 miles (97xc2xa0km), passing well beyond Hetch Hetchy Valley.
Merced Glacier flowed out of Yosemite Valley and into the Merced River Gorge.
Wildlife species typically found in these habitats include black bear, coyote, raccoon, mountain kingsnake, Gilbert's skink, white-headed woodpecker, bobcat, river otter, gray fox, red fox, brown creeper, two species of skunk, cougar, spotted owl, and a wide variety of bat species.
Rafting can be done through the Yosemite Valley on the Merced River.