Ackerman Creek

East Fork Russian River is a 15 mi (24 km) long tributary of the Russian River in Mendocino County, California artificially connected to the Eel River via an interbasin diversion at the Potter Valley Project hydroelectric facility. It forms in the north of Potter Valley, flows south through this valley, then southwest through a mountain pass to Lake Mendocino, an artificial reservoir that empties into Russian River. At one time Clear Lake to the east drained through Cold Creek then along the lower part of East Fork Russian River through Coyote Valley to the Russian River proper. A few hundred years ago a massive landslide blocked this channel, and Clear Lake found a new outlet to the Sacramento River. Cold Creek flows year round, while the upper part of East Fork Russian River used to dry up in the summer leaving isolated pools along its course. This changed when the Potter Valley Project was completed in 1908. The project involved construction of two reservoirs on Eel River to the north of the Russian River basin, and a tunnel to the head of Potter Valley that carried water from Eel River to a hydroelectric station that discharged into East Fork Russian River. The Eel River water was used to irrigate Potter Valley, and supplied water to Ukiah below the convergence with Russian River. In 1958 Coyote Dam was built on East Fork Russian River just above its mouth on Russian River, flooding Coyote Valley to form Lake Mendocino. The lake provides additional water storage as well as flood control. The continuous flow from the Potter Valley Project changed the fish ecosystem in the Russian River by eliminating the warm, still pools that had been used for breeding by native fish. In the 1950s the state introduced poison to the river to eliminate "useless" fish species in favor of game species. The Coyote Dam prevented steelhead trout from returning upstream, so today the East Fork Russian River is dominated by rainbow trout. The section of the river that flows through the mountains between Potter Valley and Lake Mendocino includes stretches of white water that are challenging for kayakers and rafters.

The Forks is an unincorporated community in Mendocino County, California. It is located 3 miles (4.8 km) north of Ukiah, at an elevation of 640 feet (195 m).

The Pinoleville Pomo Nation is a federally recognized tribe of Pomo people in Mendocino County, California. Leona Williams serves as Tribal Chairperson.

Lake Mendocino is a large reservoir in Mendocino County, California, northeast of Ukiah. It covers 1,922 acres (7.78 km2) and was formed by the construction of Coyote Valley Dam in 1958 (1958). The lake and dam provide flood control, water conservation, hydroelectric power, and recreation. The dam also includes a fallout shelter built during the Cold War era to protect against the radiation from nuclear attacks from the Soviet Union.

Ukiah High School (also referred to as UHS or "Ukiahi") is the oldest public high school in Ukiah, California, the seat of Mendocino County. Established in 1893, it is the largest school by enrollment and only four-year comprehensive high school in the Ukiah Unified School District. It serves all students in the ninth through twelfth grades from the incorporated city of Ukiah plus the four smaller, adjacent communities of Calpella, Hopland, Redwood Valley and Talmage and other rural residents of southeastern Mendocino County. The district's boundaries encompass a total area of 495 square miles (1,280 km2) with a population of approximately 40,000.

Ukiah ( yoo-KY-ə; Pomo: Yokaya, meaning "deep valley") is the county seat and largest city of Mendocino County, California, with a population of 16,607 at the 2020 census. With its accessible location along the U.S. Route 101 corridor, Ukiah serves as the city center for Mendocino County and much of neighboring Lake County.

First Baptist Church is an Evangelical Protestant church located in Ukiah, California. First Baptist is part of the American Baptist denomination. Founded nearly 150 years ago in 1859, the church has had three major upgrades to its facilities.

The Superior Court of California, County of Mendocino, also known as the Mendocino County Superior Court or Mendocino Superior Court, is the branch of the California superior court with jurisdiction over Mendocino County.

Mendocino College is a public community college in Ukiah, California. Mendocino College was founded in 1973. The main campus is located on 127 acres (0.51 km2) of hilltop land north of downtown Ukiah in the Ukiah valley. Currently there are about 4,000 students, 55 full-time faculty, and 200 adjunct faculty members. Three branches of the college exist, in Lakeport, Willits, and Fort Bragg

The Grace Hudson Museum in Ukiah, California, is adjacent to the Sun House which artist Grace Hudson and her husband John designed and had built in 1911. Today the house and museum are owned and operated by the city of Ukiah. The Sun House, a Craftsman style house constructed of redwood, is listed on the National Register of Historic Places.

The Guidiville Rancheria of California are a Pomo tribe located in Mendocino County, California.

Vichy Springs (formerly, Ukiah Vichy Springs and Doolan's Ukiah Vichy Springs) is a set of springs around which formed a resort in Mendocino County, California, United States. It is located on Sulphur Creek 3 miles (4.8 km) east-northeast of Ukiah, at an elevation of 801 feet (244 m).Although previously used by the local Native Americans, the first westerner to discover the hot springs at this location was Frank Marble, in 1848. The springs at Ukiah Vichy resemble the more famous Grand Grille Springs in Vichy, and like the springs in Vichy the waters of the springs are alkaline and carbonated. In the 1850s William Day founded the Ukiah Vichy Springs Resort, taking advantage of the 19th-century revival of hydrotherapy. By 1892 the resort was known as Doolan's Ukiah Vichy Springs. Visitors included Ulysses S. Grant, Benjamin Harrison, Jack London, Teddy Roosevelt, Robert Louis Stevenson, and Mark Twain. As one of the oldest continuously-operated hot spring resorts in the state, Ukiah Vichy Springs has been recognized as California Historical Landmark #980.A post office operated at Vichy Springs from 1893 to 1936.