Mendocino County Superior Court

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 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.

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.

Mendocino Brewing Company (OTCQB: MENB) is a brewery founded in 1983 as the Hopland Brewery in the Mendocino County town of Hopland, California. The brewery expanded and moved its operations to a larger Mendocino County facility located in Ukiah, California in 1997.

Ukiah Municipal Airport (IATA: UKI, ICAO: KUKI, FAA LID: UKI) is a public airport located one mile (1.6 km) south of Ukiah, serving Mendocino County, California, United States. This general aviation airport covers 160 acres (65 ha) and has one runway.

Ackerman Creek is a stream located in the U.S. state of California. It is located in Mendocino County.Ackerman Creek (Ya-mo bida - wind hole creek) runs through the Pinoleville Reservation in Mendocino County, and is of biocultural significance to the Pomo tribe of Native Americans. Ackerman Creek is central to Pinoleville Pomo cultural subsistence practices, as it is a source of water for the nation's sweat lodge, supports a salmon population, and its native vegetation is used in a variety of cultural practices including basketry.The Pinoleville Pomo Nation currently has restoration efforts underway to remove invasive species, propagate native species including steelhead, and conduct ongoing monitoring of ground water, surface water, vegetation, macroinvertebrates, fish, and birds.

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

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 Mendocino Transit Authority (MTA) is a public bus system that serves Ukiah, the Mendocino Valley, and coastal regions of Mendocino County, California. MTA began service in 1976 under a joint powers agreement between the County of Mendocino and the cities of Fort Bragg, Point Arena, Ukiah and Willits.

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