kids encyclopedia robot

Alta Loma, Rancho Cucamonga, California facts for kids

Kids Encyclopedia Facts
San Gabriel Mountains
Snow-capped San Gabriel Mountains above Alta Loma as seen from Sapphire Street and Thoroughbred Street.
Cucamonga Peak West
Cucamonga Peak looms over Alta Loma which lies along the foothills of the Southern face of the San Gabriel Mountains

Alta Loma (Spanish for "Tall Hill") is one of three unincorporated areas that became part of the city of Rancho Cucamonga, California, United States in 1977. The community is located at 34°09′N 117°36′W / 34.15°N 117.60°W / 34.15; -117.60 in the foothills of the south face of the San Gabriel Mountain range, near Cucamonga Peak and Mount San Antonio (Mount Baldy). Its ZIP codes are 91701 and 91737. Elevation ranges from 1,400 feet (430 m) to 3,000 feet (910 m). The name comes from the Spanish words for "high hill." Alta Loma had previously been known as "Iamosa".


Alta Loma is one of the more affluent areas in San Bernardino County. It is almost completely residential and, by city ordinance, no commercial business may exist above 19th Street, with the exception of several businesses already in place when the ordinance was enacted (notably at the intersection of Lemon Avenue and Haven Avenue). In addition, homes north of Banyan Street must have a minimum of 1/2 acre lots, with the exception of the development known as "Compass Rose Phase II", directly west of Chaffey College (between Banyan Street and Wilson Avenue). Compass Rose Phase II was granted permission for smaller lots provided the development connected to city sewer systems instead of septic tanks. For some reason all of the homes in Compass Rose are on septic tanks.

The three communities incorporated after years of debate and at least one failed attempt on the ballot. Residents of Alta Loma and Etiwanda finally agreed to incorporation provided their identifying community names would be kept along with separate post offices and ZIP codes. In addition, businesses are permitted to use either Alta Loma or Rancho Cucamonga on letterheads, business permits, and other records.

Alta Loma (and much of the rest of Cucamonga) was formerly home to old citrus groves and grape vineyards. The reason many homes above Banyan Street, in particular, have orange and lemon trees on their property may be attributed to this; many horse trails are lined with eucalyptus trees, which are former windbreaks for the groves. Even among the office buildings and shopping malls that have been built in recent decades, the occasional patch of greenfield has a few rows of grapevines.


Most of the homes in the foothills of Alta Loma and Etiwanda sit on alluvial fans punctuated by deep debris canyons. Some of these canyons are used for water collection and thus the area does not typically take water from the Colorado River.

Cucamonga Canyon in particular is a favorite among hikers, although dangerous due to the rough terrain, loose rocks, possible flooding, poison oak, bears, mountain lions, rattlesnakes, bobcats, and other wildlife. Far up the canyon are the Cucamonga Falls, which have occasionally caused contention between the city council, residents, and developers, due to developers wanting to build homes over the falls.

Several high voltage transmission lines cross the community's northern edge just at the base of the mountains, creating an effective barrier to further development except in the case of the hills above Beryl Street, home to a former Christmas tree farm, which has been slated for development of sixty, $1 million homes across approximately 300 acres (1.2 km2).

The Alta Loma area experiences high winds known in the Inland Empire and the rest of Southern California as the "Santa Ana winds." Heavy rain storms in the past created the need for 12–18-foot-deep (3.7–5.5 m) concrete flood control channels to prevent severe flooding that historically killed many people, including a young mother and her two children in 1981 at the intersection of Beryl and 19th Streets.

The northern parts of Alta Loma are also frequently visited by private planes from Upland's Cable or Ontario airports, sometimes performing acrobatic stunts.

Alta Loma rests on the Cucamonga-Sierra Madre earthquake fault. It is a thrust fault, meaning the sides of the fault push toward each other. Several other earthquake faults pass through the area, too, including the massive San Andreas Fault system, of which most of the area's faults are a part.

Grand Prix Fire

Rancho Cucamonga burned area
Burned area of Cucamonga Canyon, near water basin, at western end of Banyan Street in Alta Loma. San Bernardino County unincorporated land. Grand Prix Fire, 25 October 2003.
Curtiss P-40E Warhawk USAF
P-40 Warhawk like those flown by the Flying Tigers

Rancho Cucamonga, Alta Loma and Etiwanda were most affected by the October 2003 Grand Prix fire, which combined with the Old Fire. The Grand Prix fire, which began October 21, 2003, ripped across the mountains just above and, in some places, down into Alta Loma and Etiwanda for six days. Overgrown brush fueled fire, which ran across the mountain tops and higher foothills to eventually fly into the canyons that are surrounded by homes. It destroyed 13 homes (including 2 mobile homes) and five outbuildings, and damaged 9 others in Alta Loma.

Other notable Alta Loma landmarks

Demens-Tolstoy Estate
The Demens-Tolstoy Estate on Hillside and Archibald
The Sam Maloof house at the top of Carnelian Street

Historical landmarks

  • Demens-Tolstoy house (c.1890) – 9686 Hillside Road (at NW corner with Archibald Avenue; 34°09′17″N 117°35′38″W / 34.1548°N 117.5939°W / 34.1548; -117.5939 (Demens-Tolstoy house));– built and owned by Peter Demens, a Tolstoy family relative. Until 2005, when developers built new homes there, it was surrounded by some of the last few groves of eucalyptus, lemon, and orange trees remaining in the area. Although other families have lived there, they are required to keep the grounds and house in good condition.
  • Sam Maloof Historic Residence and Woodworking Studio – 5131 Carnelian Street (at the northeast corner of the intersection with Hidden Farm Road; 34°09′40″N 117°36′56″W / 34.1610°N 117.6155°W / 34.1610; -117.6155 (Maloof house)) – historic residence of American woodworker Sam Maloof and now a museum and gardens as well as the office of the Sam and Alfreda Maloof Foundation for Arts and Crafts.
  • Henry Albert building / old Alta Loma post office (c. 1906) – 7136 Amethyst Street (at the northwest corner of the intersection with Lomita Drive; 34°07′28″N 117°35′54″W / 34.12441°N 117.59847°W / 34.12441; -117.59847 (Old Alta Loma post office)) – now home to Dr. Strange Records.

Structures and monuments

Name Date
Location Coordinates
Cherbak House c. 1921 9983 Hillside Rd.
(south side of Hillside Rd., between Evening Canyon Way and Briartree Pl.)
34°09′14″N 117°35′13″W / 34.1539°N 117.5870°W / 34.1539; -117.5870 (Cherbak House)
Schowalter House c. 1913 5495 Hermosa Ave.
(northeast corner of intersection with Hillside Rd.)
34°09′16″N 117°35′03″W / 34.1544°N 117.5842°W / 34.1544; -117.5842 (Schowalter House)
Schowalter Rock Pile c. 1913 North side of Hillside, east of Hermosa
Thorpe House c. 1916 9588 Wilson Ave.
(north side of Wilson Ave. between Malachite Ave. and Klusman Ave.)
34°09′03″N 117°35′47″W / 34.1509°N 117.5963°W / 34.1509; -117.5963 (Thorpe House)
G.P. Ledig House c. 1898 5767 Hellman Ave.
(southeast corner of intersection with Wilson)
34°09′00″N 117°36′08″W / 34.1499°N 117.6023°W / 34.1499; -117.6023 (G.P. Ledig House)
Warren/Thorpe House c. 1877 6112 Hellman Ave.
(southwest corner of intersection with Banyan St.)
34°08′37″N 117°36′12″W / 34.1435°N 117.6033°W / 34.1435; -117.6033 (Warren/Thorpe House)
Goerlitz House c. 1902 6156 Hellman Ave.
(south of Banyan St.)
34°08′34″N 117°36′12″W / 34.1427°N 117.6033°W / 34.1427; -117.6033 (Goerlitz House)
Alta Loma School c. 1921 9480 19th St.
(northwest corner of intersection with Amethyst St.)
34°08′00″N 117°35′48″W / 34.1332°N 117.5967°W / 34.1332; -117.5967 (Alta Loma School)
Alta Loma Honor Roll c. 1942 6623 Amethyst St.
Ledig House c. 1895 9404 La Vine St.
(north side of La Vine St., west of Layton Ct.)
34°07′35″N 117°36′01″W / 34.1264°N 117.6004°W / 34.1264; -117.6004 (Ledig House)
Alta Loma Heights
Citrus Association
Packing House
(historic location)
c. 1914 7125 Amethyst St.
(southeast corner of intersection with La Grande St.; Old structures destroyed. Now senior/low-income apartments.)
34°07′30″N 117°35′51″W / 34.1249°N 117.5974°W / 34.1249; -117.5974 (Alta Loma Heights Citrus Association Packing House (historic location))
Alta Loma Fire Hall c. 1938 7152 Amethyst St.
Roth's Store/Post Office c. 1915 7157 Amethyst St.
(just north of the Pacific Electric Trail)
34°07′26″N 117°35′53″W / 34.1240°N 117.5980°W / 34.1240; -117.5980 (Roth's Store/Post Office)
Roberds House c. 1910 7201 Amethyst St.
(just south of the Pacific Electric Trail)
34°07′24″N 117°35′51″W / 34.1232°N 117.5974°W / 34.1232; -117.5974 (Roberds House)
Charles Stoebe House c. 1895 6710 Beryl St.
(southwest corner of intersection with 19th St.)
34°07′56″N 117°36′28″W / 34.1322°N 117.6078°W / 34.1322; -117.6078 (Charles Stoebe House)

Native American ruins

  • Like much of the area of the eastern San Gabriel range, Alta Loma's foothills contain artifacts left by the original Native Americans. Some of these were burned and partially destroyed by the Grand Prix Fire in 2003. Many of the ruins sit on land owned by Paul Biane, the current second district supervisor for the San Bernardino County Board of Supervisors and former Rancho Cucamonga councilman.

See also

Kids robot.svg In Spanish: Alta Loma (California) para niños

kids search engine
Alta Loma, Rancho Cucamonga, California Facts for Kids. Kiddle Encyclopedia.