Cobb Mountain is the tallest mountain in the

Mayacamas Mountains The Mayacamas Mountains are located in northwestern California in the United States. The mountain range is part of the Northern Inner Coast Ranges, of the California Coast Ranges System. Geography The Mayacamas Mountains are located south of the ...

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

Location

Cobb Mountain's main summit is located in Lake County, west of the town of Cobb. Like nearby

Mount Saint Helena Mount Saint Helena (Wappo: Kanamota, "Human Mountain") is a peak in the Mayacamas Mountains with flanks in Napa, Sonoma, and Lake counties of California. Composed of uplifted 2.4-million-year-old volcanic rocks from the Clear Lake Volcanic Fiel ...

, Cobb Mountain is tall enough to receive winter snowfall. The mountain has a sub-peak referred to as Cobb Mountain – Southwest Peak with an elevation of about 4483+ feet, (1367+ m); Southwest Peak lies on the Sonoma-Lake county line and is the highest point in Sonoma County. Nearby taller peaks like Mount Saint Helena and

Snow Mountain There are various mountains called Snow Mountain in the United States: See also * Snow Mountain Wilderness, California * Mount Snow, Vermont, United States * Snow Peak (disambiguation) * Ice Mountain (disam ...

can be seen from this summit.Height and visual lines-of-sight are based on Google Earth images. Cobb Mountain is one of the mountains in the Cobb Mountain Area, many of which have volcanic origin. Others are

Boggs Mountain Boggs Mountain is a mountain the Mayacamas Mountains in Lake County, California. Part of the mountain holds the Boggs Mountain Demonstration State Forest. About 80% of the trees were burned in the September 2015 Valley Fire. Name In the early day ...

, Mount Hannah and Seigler Mountain. There are isolated small valleys and basins between the mountain peaks. The east end of Cobb Mountain drains into the headwaters of

Putah Creek Putah Creek (Patwin: ''Liwaito'') is a major stream in Northern California, a tributary of the Yolo Bypass, and ultimately, the Sacramento River. The creek has its headwaters in the Mayacamas Mountains, a part of the Coast Range, and flow ...

, then into the

Sacramento River The Sacramento River ( es, Río Sacramento) is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento� ...

, the San Francisco Bay, and the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...

. The south slopes of Cobb Mountain drain into Anderson Creek, and thence into Putah Creek. The southwest slopes of Cobb Mountain drain into Cobb Creek, thence into Big Sulphur Creek, the Russian River, and into the Pacific. The northwest slopes of Cobb Mountain drain into Alder Creek, thence into Kelsey Creek, Clear Lake, Cache Creek, and the Sacramento River. The northeast slopes of Cobb Mountain drain into Kelsey Creek. Much of Cobb Mountain lies within

The Geysers The Geysers is the world's largest geothermal field, containing a complex of 18 geothermal power plants, drawing steam from more than 350 wells, located in the Mayacamas Mountains approximately north of San Francisco, California. Geysers produce ...

Geothermal Field, and several geothermal plants are located on the mountain. Other areas on the mountain are owned by Cobb Mountain Spring Water (now sold as Mayacamas Mountain Spring Water) or are privately held timberlands. Because much of Cobb Mountain is privately owned, it is largely not accessible to the general public.

History

The mountain is named after John Cobb, the first pioneer to settle in the area. Cobb was born in

Henry County, Kentucky Henry County is a county located in the north central portion of the U.S. state of Kentucky bordering the Kentucky River. Its county seat is New Castle, but its largest city is Eminence. The county was founded in 1798 from portions of Shelby ...

on May 19, 1814. In 1853 he arrived in California and homesteaded in Cobb Valley and went on to become the county assessor and the road overseer for the Clearlake District in 1855. He built a combined saw and gristmill in 1859, which was later destroyed by fire. He sold his interests and moved to

Napa County Napa County () is a county north of San Pablo Bay located in the northern portion of the U.S. state of California. As of the 2020 census, the population was 138,019. The county seat is the City of Napa. Napa County was one of the original c ...

around 1860. The Cobb Mountain area was devastated in 2015 by the

Valley Fire The Valley Fire was a wildfire during the 2015 California wildfire season that started on September 12 in Lake County, California. It began shortly after 1:00 pm near Cobb with multiple reports of a small brush fire near the intersection of ...

, including much of the town of Cobb, as well as several geothermal facilities. The catastrophic fire, the third-most destructive in California's history, started on Cobb Mountain as the result of faulty hot tub wiring according to

Cal Fire The California Department of Forestry and Fire Protection (CAL FIRE) is the fire department of the California Natural Resources Agency in the U.S. state of California. It is responsible for fire protection in various areas under state responsi ...

. Four people died and a total were burned over.

References

Sources

External links

* {{authority control Mountains of Lake County, California Mayacamas Mountains Mountains of Northern California