Boggs Lake Ecological Reserve

Mount Hannah is a mountain in the Mayacamas Mountains of the Northern California Coast Ranges. It is in Lake County, California.

Red Hills Lake County AVA is an American Viticultural Area (AVA) located in Lake County, California and was established by Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury on September 10, 2004. The wine region lies along the southwestern shores of Clear Lake, separating Excelsior Valley to the east from Big Valley to the west. The hills lie at the foot of Mount Konocti, a volcano which last erupted 11,000 years ago, but which is still regarded as active. The terrain is rolling hills with elevations between 1,400 feet (430 m) and 3,000 feet (910 m) above sea level. Red Hills receives an average of 25 to 40 inches (635–1,016 mm) of rainfall annually.

Seigler Mountain is a mountain in the Mayacamas Mountains of the Northern California Coast Ranges. It is in Lake County, California.

The Clear Lake Volcanic Field is a volcanic field beside Clear Lake in California's northern Coast Ranges. The site of late-Pliocene to early Holocene activity, the volcanic field consists of lava domes, cinder cones, and maars with eruptive products varying from basalt to rhyolite. The site's threat level is ranked "High" at #33 in the top volcanic threats in the United States according to "2018 Update to the U.S. Geological Survey National Volcanic Threat Assessment". The last eruption being about 11,000 years ago. Cobb Mountain and Mount Konocti are the two highest peaks in the volcanic field, at 4,724 feet (1,440 m) and 4,285 feet (1,306 m) respectively. The field's magma chamber also powers a geothermal field called The Geysers, which hosts the largest complex of geothermal power plants in the world. These can generate approximately 2000 megawatts, enough to power two cities the size of San Francisco.The Clear Lake volcanics are thought to have been the heat source for the hot springs and hydrothermal activity that formed the mercury ores at the Sulphur Bank Mine, and the gold ore at the McLaughlin Mine.

Clearlake Riviera (formerly Clear Lake Riviera) is a census-designated place in Lake County, California. It lies at an elevation of 1755 feet (535 m). The population was 3,090 at the 2010 census.

Mount Konocti is a volcano in Lake County, California on the south shore of Clear Lake. At 4,305 feet (1,312 m), it is the second highest peak in the Clear Lake Volcanic Field, which consists of numerous volcanic domes and cones ranging from 10,000 to 2.1 million years old. Although it is often described as extinct, it is actually classified as High Threat Potential. Clear Lake Volcanic Field's alert level is currently classified as Normal.

KPFZ-FM is an FM radio station that broadcasts a community radio format to Lake County, California. KPFZ's staff, including board members, programmers, and hosts are volunteers.

Riviera West is an unincorporated community in Lake County, California.

Konocti Harbor is a resort and music venue in Kelseyville, California. It is situated at the base of Mount Konocti on the south shore of Clear Lake, the largest freshwater lake interior to California. Its amenities included a spa, a miniature golf course, a marina, and two Olympic-size swimming pools.

Thurston Lake is a lake adjacent to the southeast side of the much larger Clear Lake. in Northern California. In the past, volcanic deposits formed a ridge separating Thurston Lake from Clear Lake. The lake is notably turbid, the result of clayey runoff from nearby Manning Flat.

Soda Bay is a census-designated place in Lake County, California. It is located on Clear Lake 7.5 miles (12 km) east-southeast of Lakeport, at an elevation of 1,398 feet (426 m). The population was 1,016 at the 2010 census. A resort at the place, called Soda Bay Springs, could by 1910 accommodate 150 guests.

Seigler Canyon Creek (also known as Siegler Creek and Sigler Creek) is creek in Lake County, California.