Etiwanda Falls

San Sevaine Flats is a small area of flatland east of Cucamonga Peak in the San Gabriel Mountains in San Bernardino County, California. The area is in the Cucamonga Wilderness in the San Bernardino National Forest, 1.24 miles south of Bonita Falls on South Fork Lytle Creek and north of Rancho Cucamonga, California. It has an elevation of 1,690 meters, or 5,545 feet.

The Etiwanda Fire was a wildfire in the San Bernardino National Forest in the foothills north of Rancho Cucamonga. The fire started on April 30, 2014, during Santa Ana wind conditions of high temperatures and strong winds. On the first day, four schools and more than 1,500 homes were evacuated; residential evacuation orders were canceled that evening. Nine schools were closed on May 1, but they all were reopened on May 2. Many nearby communities were warned of unhealthy air quality. It burned 2,143 acres (867 ha) and was fully contained on May 10. The Etiwanda Fire was caused by an escaped illegal campfire.

Bonita Falls are a set of waterfalls in the San Bernardino National Forest, formed by Bonita Creek, that is said to be 370 or 400 feet (113 or 122 meters) in height, but possibly up to 495 feet high because of two undocumented drops in the canyon above. It is the second tallest in the national forest, being surpassed only by 500-foot (150 m) Big Falls. These two waterfalls are reputably the tallest in southern California.

Los Osos High School is a public high school located in the city of Rancho Cucamonga in Southern California's Inland Empire in the United States. It operates as part of the Chaffey Joint Union High School District. The school was named a California Distinguished School in 2013, was the recipient of a Golden Ribbon Award from the California Department of Education in 2017, and was a 2018 U.S. News & World Report Best High School Silver Medalist. Graduates from the Class of 2017 met the University of California A-G admission requirements at a rate of 66.4%, nearly 20% higher than the state average.

South Fork Lytle Creek is a tributary of Lytle Creek in San Bernardino County, California.

Etiwanda High School is a public high school in Rancho Cucamonga, California, United States. It is one of the twelve schools of the Chaffey Joint Union High School District and serves students in the Etiwanda community on the northeast side of Rancho Cucamonga.

Middle Fork Lytle Creek is a tributary of Lytle Creek in San Bernardino County, California.

North Fork Lytle Creek is a tributary of Lytle Creek in San Bernardino County, California.

Miller Narrows is a gap that Lytle Creek passes through just below its confluence with South Fork Lytle Creek in San Bernardino County, California.

Chaffey College is a public community college in Rancho Cucamonga, California. The college serves students in Chino, Chino Hills, Fontana, Montclair, Ontario, Rancho Cucamonga and Upland. It is the oldest community college in California.

Etiwanda is the easternmost of three formerly unincorporated communities that became part of Rancho Cucamonga, California, in 1977.

Cucamonga Peak is one of the highest peaks of the San Gabriel Mountains in San Bernardino County, California, with a summit elevation of 8,862 feet (2,701 m). It is within the Cucamonga Wilderness of the San Bernardino National Forest. It is named after the 19th-century Mexican land grant, Rancho Cucamonga, that was below it.