San Jose Creek is an intermittent,

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

stream A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a strea ...

of the San Gabriel River in

Los Angeles County, California Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the List of United States counties and county equivalents, most populous county in the United States, with 9,663,345 residents estimated in 202 ...

. The mouth of San Jose Creek is at an elevation of at its confluence with the San Gabriel River, southwest of

Bassett, California Bassett is an unincorporated community in the San Gabriel Valley, in Los Angeles County, California, United States, within the Census-designated places boundaries of Avocado Heights and West Puente Valley. Its ZIP Code is 91746 and it uses area ...

. Its source is at 960 feet near the

Los Angeles County Fairplex The Fairplex has been the home of the L.A. County Fair since 1922. Known prior to 1984 as the Los Angeles County Fairgrounds, it is located in the city of Pomona, California. The L.A. County Fair is held during the month of May since 2022, but th ...

, at , where it has its confluence with Thompson Wash, actually a continuation of the creek into the

San Gabriel Mountains The San Gabriel Mountains () are a mountain range located in Los Angeles and San Bernardino counties, California, United States. The mountain range is part of the Transverse Ranges and lies between the Los Angeles Basin and the Mojave Desert ...

. From Thompson Wash, San Jose Creek flows nearly westwards from Pomona into the San Gabriel River through the

Pomona Valley The Pomona Valley is located in the Greater Los Angeles Area between the San Gabriel Valley and San Bernardino Valley in Southern California. The valley is approximately east of downtown Los Angeles. History The earliest inhabitants of Pomo ...

and

San Gabriel Valley The San Gabriel Valley (), sometimes referred to by its initials as SGV, is one of the principal valleys of Southern California, with the city of Los Angeles directly bordering it to the west and occupying the vast majority of the southeastern ...

. Because of its strategic location between the

San Jose Hills The San Jose Hills are a part of the Transverse Ranges in eastern Los Angeles County, California, marking the border between the San Gabriel Valley and the Pomona Valley. It includes portions of Covina, West Covina, Walnut, Pomona, and San Dimas ...

and

Puente Hills The Puente Hills are a chain of hills, one of the lower Transverse Ranges, in an unincorporated area in eastern Los Angeles County, California, Los Angeles County, California, in the United States. The western end of the range is often referred to ...

, the

Union Pacific Railroad The Union Pacific Railroad is a Railroad classes, Class I freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United Stat ...

laid tracks along its route connecting Los Angeles with San Bernardino and Salt Lake City. From 1829, San Jose Creek was a stopping place on the Old Spanish Trail first used by

Antonio Armijo Antonio Mariano Armijo (1804–1850) was a Spanish explorer and merchant who is famous for leading the first commercial caravan party between Abiquiú, Nuevo México and San Gabriel Mission, Alta California in 1829–1830. His route, the southe ...

. In 1837, much of its upper reaches were enclosed within the

Rancho San Jose Rancho or Ranchos may refer to: Settlements and communities *Rancho, Aruba, former fishing village and neighbourhood of Oranjestad *Ranchos of California, 19th century land grants in Alta California ** List of California Ranchos * Ranchos, Buenos ...

References

Rivers of Los Angeles County, California San Gabriel River (California) {{LosAngelesCountyCA-geo-stub