Royal Oaks Park

Rancho Cañada de la Carpenteria was a 2,236-acre (9.05 km2) Mexican land grant in present day Monterey County, California given in 1835 by Governor José Castro to Joaquín Soto. The name means valley of the carpenter's shop. The grant was near the San Benito County, California line, in hilly terrain north of Rancho Los Carneros and encompassed the former settlement of Dunbarton.

Rancho Los Carneros was a 4,482-acre (18.14 km2) Mexican land grant in present-day Monterey County, California given in 1834 by Governor José Figueroa to David Littlejohn. The name means quite literally "Ranch of the Rams". The grant was east of Elkhorn Slough and encompassed present-day Elkhorn.

Rancho Bolsa Nueva y Moro Cojo was a 30,901-acre (125.05 km2) Mexican land grant in present-day Monterey County, California given in 1844 by Governor Manuel Micheltorena to María Antonia Pico de Castro. Literally translated, the name means "new pocket and lame moor". In the plains of Argentina and Uruguay, "moro" is the color of a horse, a special gray-bluish shade. This name must certainly be of Spanish origin, so it is not unreasonable to suppose that this Spanish name of a place in California does not refer to a "moor" (a muslim inhabitant of northern Africa, a very unlikely occurrence in California) but to a lame horse. The name "pocket" refers to pockets of land surrounded by marshes. The grant extended from Moss Landing on the Monterey Bay inland to present day Prunedale, and south to Castroville.

Rancho Los Carneros was a 1,629-acre (6.59 km2) Mexican land grant in present day Monterey County, California given in 1842 by Governor Juan B. Alvarado to María Antonia Linares. The name means "sheep". The grant was near the San Benito County, California line and south of Rancho Cañada de la Carpenteria.

Aromas (Spanish for "Perfumes") is an unincorporated community and census-designated place (CDP) in Monterey County and San Benito County, California, United States. The population was 2,708 at the 2020 census.The CDP straddles the border of the two counties, with Monterey County to the west and San Benito County to the east. The Santa Cruz County line is less than a mile to the northwest, and Santa Clara County is about 2 miles (3 km) to the north. Its population was almost equally distributed between the two counties with 1,358 in Monterey County and 1,292 in San Benito County; this was down from a population of 2,797 during the 2000 census (1,427 in Monterey County and 1,370 in San Benito County). Aromas is one of four CDPs in California that are divided between two or more counties. The others are Kingvale (divided between Placer County and Nevada County), Kirkwood (divided between Alpine County and Amador County), and Tahoma (divided between Placer County and El Dorado County).

Prunedale is a unincorporated community in Monterey County, California, United States. It is located 8 miles (13 km) north of Salinas at an elevation of 92 feet (28 m). The population was 18,885 as of the 2020 census, up from 17,560 in 2010. For statistical purposes, the United States Census Bureau has defined Prunedale as a census-designated place (CDP). Plum trees were grown in Prunedale in the early days of its founding, but the trees died soon after due to poor irrigation and fertilizer.

Rancho Vega del Río del Pájaro was a 4,310-acre (17.4 km2) Spanish land concession in present day Monterey County, California given in 1821 by Pablo Vicente de Solá to Antonio María Castro. The grant was confirmed by Mexican Governor José Figueroa in 1833. The name means "a meadow along the Pajaro River". The rancho lands bordered the Pajaro River and include the present day Vega and Watsonville.

Las Lomas (Spanish for 'The Hills') is an unincorporated community and census-designated place (CDP) in Monterey County, California, United States. Las Lomas is located 7 miles (11 km) north-northwest of Prunedale. The elevation is 43 feet (13 m). The population was 3,046 at the 2020 census.

Elkhorn is an unincorporated community and census-designated place (CDP) in Monterey County, California, United States.Elkhorn was originally a stop on the Southern Pacific Railroad 4 miles (6 km) north of Castroville, at an elevation of 10 feet (3.0 m). The settled part of the community now occupies the hills to the east of the railroad. The population of the Elkhorn CDP was 1,588 at the 2020 census. Local understandings of the extent of Elkhorn may vary from the Census definition. Elkhorn was named after the elk in the area that have since gone extinct.

Oak Hills is an unincorporated community in Monterey County, California. It lies at an elevation of 56 feet (17 m). It is located on California State Route 156 between Castroville and Prunedale.

Rancho Las Aromitas y Agua Caliente, commonly known as Rancho Las Aromas, was a 8,660-acre (35.0 km2) Mexican land grant in present-day San Benito County, California given in 1835 by Governor José Castro to Juan Miguel Anzar. The name means "little perfumes and hot spring" and refers to nearby sulfur springs. The grant is close to the Santa Cruz County, California line and encompassed present-day Aromas.

Carneros Creek is a westward flowing stream and is the primary source of freshwater flowing into Elkhorn Slough. The Carneros Creek official mainstem is 9.8 miles (15.8 km) long. Its source is in the northern Gabilan Range along Highway 101/156. After it waters transit Elkhorn Slough, the historic mouth of the Salinas River, Carneros Creek empties into Monterey Bay at Moss Landing, California.