Romero Creek, originally El Arroyo de Romero, is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 stream of the San Joaquin River

San Joaquin River

The San Joaquin River is the largest river of Central California in the United States. At over long, the river starts in the high Sierra Nevada, and flows through a rich agricultural region known as the San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean...

. Its source drains the slopes of the Diablo Range

Diablo Range

The Diablo Range is a mountain range in the California Coast Ranges subdivision of the Pacific Coast Ranges. It is located in the eastern San Francisco Bay area south to the Salinas Valley area of northern California, the United States.-Geography:...

 within the Central Valley of California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, USA.

The Creek has its source in Stanislaus County in a canyon a half mile east of Bone Spring Hill, 2509 feet high, near Eagle Spring, about 12 1/2 miles from its mouth just east of where it emerges from the foothills in Merced County, shortly ending where it meets the Delta Mendota Canal.

History

El Arroyo de Romero was a watering place on El Camino Viejo

El Camino Viejo

El Camino Viejo à Los Angeles , also known as the Old Los Angeles Trail, established in 1820's, was the oldest north-south trail in the interior of Alta California...

 in the San Joaquin Valley

San Joaquin Valley

The San Joaquin Valley is the area of the Central Valley of California that lies south of the Sacramento – San Joaquin River Delta in Stockton...

 between Arroyo de Quinto

Quinto Creek

Quinto Creek, originally El Arroyo de Quinto, later Kinto Creek, is a tributary stream of the San Joaquin River that now fails to reach the river. Its source drains the slopes of the Diablo Range within the Central Valley of California, USA...

 and Arroyo de San Luis Gonzaga

San Luis Creek (California)

San Luis Creek, originally Arroyo de San Luis Gonzaga, is a stream in Merced County, California. Its source is located in Merced County, about 1000 ft. northwest of 3448 ft. high Mariposa Peak, on the Merced County - San Benito County boundry and 7.4 miles south of Pacheco Pass...

.