Guadalupe-Nipomo Dunes National Wildlife Refuge

Guadalupe-Nipomo Dunes is the largest remaining dune system south of San Francisco and the second largest in the U.S. state of California. It encompasses an 18-mile (29 km) stretch of coastline on the Central Coast of California and extends from southern San Luis Obispo County to northern Santa Barbara County.The Guadalupe-Nipomo Dunes Complex is home to a unique dunes ecosystem as well as many endangered and threatened species of plants and animals. To protect the dunes environment, much of the Complex has been set aside for conservation. In addition, it is recognized as a National Natural Landmark.Another portion of the Dunes is utilized for recreation, such as camping and off-highway vehicle (OHV) use. The Guadalupe-Nipomo Dunes is owned by a number of federal, state, and local agencies, and private companies, organizations and individuals. These include the counties of San Luis Obispo and Santa Barbara, California State Parks, U.S. Fish and Wildlife Service and the Land Conservancy of San Luis Obispo County.

Santa Maria River on the Central Coast of California, is formed at the confluence of the Sisquoc River and Cuyama River, just east of the city of Santa Maria, and flows 24.4 miles (39.3 km) to its delta at the Pacific Ocean.The entire river defines the border between northern Santa Barbara County and southern San Luis Obispo County, up to the Sisquoc River, with a major bridge on Highway 101 passing over it. The Santa Maria River Fault is a tectonic fault that roughly corresponds with the course of the river.There are no dams or lakes on the Santa Maria River itself, although Twitchell Reservoir is formed by a dam on the tributary Cuyama River. Twitchell Dam was built by the United States Bureau of Reclamation and provides flood control and groundwater recharge of the aquifer. The Sisquoc River is also free-flowing, and a National Wild and Scenic Rivers System.During much of the year, the Santa Maria River has very little water, but it can swell greatly during winter storms.

Callender is a census-designated place in San Luis Obispo County, California, United States. Callender is located along California State Route 1 south of Arroyo Grande. The population was 1,262 at the 2010 census.

Guadalupe is a small city located in Santa Barbara County, California. According to the U.S. Census of 2010, the city has a population of 7,080. Guadalupe is economically and socially tied to the city of Santa Maria, which is about 8 miles (13 km) to the east. It is located at the intersection of Highway 1 and Highway 166, immediately south of the Santa Maria River, and 5 miles (8 km) east of the Pacific Ocean.

Guadalupe station (also known as Guadalupe–Santa Maria) is an Amtrak train station in the city of Guadalupe, California. The station primarily serves the larger city of Santa Maria, located 8 miles (13 km) to the east. It is served by two daily round trips of the Pacific Surfliner. Service to the station began in July 1998. A new station was built to replace the former structure, which was demolished around 1974. The new station was built in a Spanish Colonial Revival style featuring a barrel red-tiled roof and white stuccoed walls, similar to that of older train stations in Southern California. The San Diegan was renamed Pacific Surfliner in 2000.

Rancho Guadalupe was a 43,682-acre (176.77 km2) Mexican land grant in present-day northwestern Santa Barbara County and southwestern San Luis Obispo County, California given in 1840 by Governor Juan B. Alvarado to Diego Olivera and Teodoro Arellanes. The grant extended along the Pacific coast, and encompassed present-day Guadalupe.

Woodlands is a census-designated place in San Luis Obispo County, California. "The Woodlands" is a 956-acre master planned community with single- and multi-family homes, a resort hotel, retail and office space, located adjacent to Nipomo, California. Woodlands sits at an elevation of 282 feet (86 m). The 2010 United States census reported Woodlands's population was 576.

Rancho Bolsa de Chamisal was a 14,335-acre (58.01 km2) Mexican land grant in present-day San Luis Obispo County, California given in 1837 by Governor Juan B. Alvarado to Francisco Quijada. The grant extended along the Pacific coast, just south of present-day Oceano, and was bordered on the north by Rancho Pismo and the south by Rancho Guadalupe.

Blacklake is a census-designated place in San Luis Obispo County, California. Blacklake sits at an elevation of 341 feet (104 m). The 2010 United States census reported Blacklake's population was 930. Blacklake (or Blacklake Village) is an area of residential subdivisions surrounding the Blacklake Golf Resort, and is located between Nipomo and Callender, California.

Oceano County Airport (FAA LID: L52) is a public airport located one mile (1.6 km) west of the central business district (CBD) of Oceano, in San Luis Obispo County, California, United States. The airport covers 58 acres (230,000 m2), and has one runway and no control tower. It is mostly used for general aviation, and is walking distance to the sand dunes that line the beach at Oceano.

Oceano (Spanish: Océano, meaning "Ocean") is a census-designated place (CDP) in San Luis Obispo County, California, United States. The population was 7,286 at the 2010 census, up from 7,260 at the 2000 census.

Halcyon is an unincorporated community of about 125 acres (50 ha) in San Luis Obispo County, California, just south of Arroyo Grande. It was founded in 1903 as a Theosophical intentional community and is the home and headquarters of a religious organization, The Temple of the People (not to be confused with Jim Jones and the Peoples Temple). The Temple group was founded in 1898.