The North Bay is a subregion of the San Francisco Bay Area, in California, United States. The largest city is Santa Rosa, which is the fifth-largest city in the Bay Area. It is the location of the Napa and Sonoma wine regions, and is the least populous and least urbanized part of the Bay Area. It consists of Marin, Napa, Solano and Sonoma counties.
Hog Island is an island in the wetlands of the Petaluma River in Sonoma County, California, located at 38°09′33″N122°32′18″W near the Marin County line. San Antonio Creek enters the river just west of this island. It is mentioned in a newspaper article from 1914.
Ignacio is an unincorporated community in Marin County, California. It is located 3 miles (4.8 km) southeast of downtown Novato, at an elevation of 30 feet.
Whiteside Marsh is a coastal estuary marsh and wetlands on the northwestern shore of San Pablo Bay in northern Marin County, California. It is in and adjacent to the city of Novato and the Bel Marin Keys community, in the North Bay region of the San Francisco Bay Area.
Rancho Novato was a 8,871-acre (35.90 km2) Mexican land grant in present day Marin County, California given in 1839 by Governor Juan Alvarado to Fernando Feliz. The grant extended along San Pablo Bay, from Black Point to Rancho San Jose, and included the land that now encompasses the city of Novato.
Goat Island is an island in Suisun Slough, near Suisun Bay, an embayment of San Francisco Bay. It is part of Solano County, and not managed by any reclamation district. Its coordinates are 38°12′51″N122°02′03″W, and the United States Geological Survey measured its elevation as 16 ft (4.9 m) in 1981.
Burdell Island is a former island in the Petaluma River, upstream of San Pablo Bay. While it was previously surrounded by water and swampland, it is now surrounded mostly by dry land. It is part of Marin County, California. Its coordinates are 38°09′22″N122°33′17″W, and the United States Geological Survey gave its elevation as 52 ft (16 m) in 1981. It appears in a 1954 USGS map of the region.
Day Island is an island at the mouth of the Petaluma River in San Pablo Bay. It is part of Marin County, California. Its coordinates are 38°06′13″N122°29′26″W, and the United States Geological Survey measured its elevation as 105 ft (32 m) in 1981. It appears on a 1951 USGS map of the area, although it appears on maps from as old as 1873. The "1880 History of Marin County" by Alley, Bowen and Co. mentions "a man by name of Day" who "settled on an island in Novato township which has since borne his name" in 1851." To this day, there are still 2 houses on the island, both inhabited. The island is bordered by dirt and two lagoons to the west, and marshlands to the east, although it was once entirely surrounded by either marshland or water.
Neils Island is a former island in Sonoma County, California, close to the Petaluma River, upstream of San Pablo Bay. Its coordinates are 38°11′27″N122°34′41″W, and the United States Geological Survey measured its elevation as 82 ft (25 m) in 1981. It appears in a 1954 USGS map of the region.
Little Island is a partially submerged marsh island in the Napa Slough, branching off from the Napa River upstream of San Pablo Bay. It is almost entirely in Napa County, California, although part of its southern tip is in Solano County; it is managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°10′48″N122°21′05″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.
Wood Island is a former island in Marin County, California, formerly in the Corte Madera Creek but now surrounded by land. Its coordinates are 37°56′37″N122°30′42″W, and the United States Geological Survey measured its elevation as 13 ft (4.0 m) in 1981. It appears in a 1954 USGS map of the region. In the 1960s, its principal owner was Spero Spiliotis. In 1969, the city of Larkspur passed a resolution of intent to annex the island, and in the 1970s, a ferry terminal had been proposed.
Coon Island is an island in the Napa River, upstream of San Pablo Bay. It is in Napa County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°11′33″N122°19′24″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.
Edgerly Island is an island in the Napa River, upstream of San Pablo Bay. It is in Napa County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°12′12″N122°18′52″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.
Green Island is an island in the Napa River, upstream of San Pablo Bay. It is in Napa County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°12′09″N122°18′16″W, and the United States Geological Survey measured its elevation as 23 ft (7.0 m) in 1981. It, long with Island No. 1, Island No. 2 and Tubbs Island, are labeled on a 1902 USGS map of the area.
Island No. 1 is a partially submerged island in the Napa River, upstream of San Pablo Bay. It is in Napa and Solano County, California, and parts of it are managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°08′35″N122°20′40″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981. It, along with Island No. 2, Green Island and Tubbs Island, are labeled on a 1902 USGS map of the area.
Knight Island is a mostly-submerged island in the Napa River, upstream of San Pablo Bay. It is in Solano County, California, and managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°08′09″N122°17′58″W, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981.
Tubbs Island is an island in San Pablo Bay. It is in Sonoma County, California, and parts of it are managed as part of the Napa-Sonoma Marshes Wildlife Area. Its coordinates are 38°08′59″N122°25′27″W, and the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981. It, long with Island No. 1, Island No. 2 and Green Island, are labeled on a 1902 USGS map of the area.
Ogilvie Island is a patch of mud in San Francisco Bay. It is within the limits of the city of San Jose, in Santa Clara County, California, and named for county planner Arthur Ogilvie. Its coordinates are 37°27′55″N122°00′37″W, and the United States Geological Survey gave its elevation as 0 ft (0 m) in 2012. It appears on a 2012 USGS map of the area.
Simms Island is a former marsh island in San Francisco Bay. It is in Marin County, California; Its coordinates are 37°57′33″N122°30′18″W, and the United States Geological Survey (USGS) gave its elevation as 13 ft (4.0 m) in 1981. It appears as an island on a USGS map in 1897; it is labeled in a 1954 map, but fully connected to the mainland.
Jakes Island is an island in San Francisco Bay. It is in Marin County, California. Its coordinates are 38°00′47″N122°29′20″W, and the United States Geological Survey gives its elevation as 52 ft (16 m). Egrets can be seen there.
California 
