32°42′31″N 117°01′43″W / 32.7087°N 117.0286°W / 32.7087; -117.0286

Jamacha Neighborhood, City of San Diego Xamca
Community of San Diego
HAM-ə-SHAW
2014 aerial photo of the border of Jamacha Neighborhood, in the City of San Diego and Spring Valley
Jamacha is located in District 4, in the City of San Diego
Jamacha Neighborhood, City of San Diego Location within District 4, San Diego
Coordinates: 32°42′31″N 117°01′43″W / 32.7087°N 117.0286°W / 32.7087; -117.0286
Country	United States of America
State	California
County	San Diego
City	San Diego
ZIP	92114

Jamacha (pronounced: HAM-e-shaw) is a neighborhood in the District 4 area of San Diego, California. It is generally bounded by the city of Lemon Grove to the North, Both Lomita and Skyline Communities to the South, Encanto to the West of Imperial Ave. (at Atkins Ave,), and both city of Lemon Grove and Lomita Community to the East. Major thoroughfares include Lisbon Street, Jamacha Road, Woodrow Avenue, and Imperial Ave. The neighborhood is part of the Skyline-Paradise Hills Community Planning Area.^[1]

Jamacha is named for the Jamacha Valley and Rancho Jamacha, a Mexican land grant estate. The name was variously spelled Xamacha, Jamacha', 'Jamacho, and Gamacha until Jamacha was fixed as the official spelling in the early 20th century. The word is likely derived from a Spanish adaptation of the Kumeyaay Indian word Xamca, meaning "wild gourd. It has been confirmed that Jamacha had a rich history for the Kumeyaay people. In a memo written by Ralph Goff, Chairman of the Campo Band of Mission Indians, to Arleen Garcia-Herbst, Archeologist at Spindrift Archeological Consulting, LLC. "^[2]

Jamacha is a largely residential neighborhood, with mostly single-family houses, mixed with some multi-family development, Townhomes, and two apartment complexes. There is also some small-scale commercial development in the neighborhood on Imperial Ave, Lisbon St., 69th St., and the corner of Cardiff St. and Jamacha Rd.^[3]

The Skyline-Paradise Hills Community as a whole make up approximately 4,500 acres. The Jamacha consists predominantly of low-density single-family homes spread across the hilly area. The major geographic features are the Jamacha Valley that runs on an east-west axis in the community and give rise to Chollas Creek that flows into San Diego Bay. The San Diego Natural History Museum published geologic mapping indicates that Jamacha is underlain by both the Pliocene-age San Diego Formation and the Eocene-age Mission Valley Formation. Both of these formations are known to be rich in fossils and have produced important paleontological resources, and it has been determined that there are 12 recorded fossil collections within a one-mile radius of Jamacha.

Both Lomita and Skyline are legally separate neighborhoods unrelated to Jamacha per the Neighborhood Element of the Skyline-Paradise Hills Community Plan.

Lomita and Jamacha and created a fake communities of Jamacha-Lomita, Jamacha Lomita. Which has caused confusion creating the false name of Jamacha-Lomita in maps and overlays that conflicts with the legally binding Skyline-Paradise Hills Plan.