Question: Which Californian canal, Buena Vista Canal or Coachella Canal, ends at Lake Webb and the Kern River?

Context paragraphs:
Coachella Canal: The Coachella Canal is a 122 mi aqueduct that conveys Colorado River water for irrigation northwest from the All-American Canal to the Coachella Valley north of the Salton Sea in Riverside County, California.

Buena Vista Canal: Buena Vista Canal is an irrigation canal in Kern County, California.  It originates from the Carrier Canal at Coffee Road.  The canal terminates at Lake Webb (and Buena Vista Lakebed) and the Kern River.

Chico Martinez Creek: Chico Martinez Creek, formerly Arroyo Chico Martinez is a stream with its source located in the Temblor Range in Kern County, California near to the San Luis Obispo County boundary.  Its source is located 10.7 miles north of Soda Lake, California in the middle of the Carrizo Plain.  The creek runs generally east and northeast to terminate just east of the South Belridge Oil Field.  In years of heavy rainfall it may have been a tributary to the Kern River between Buena Vista Lake and Tulare Lake.

Kern Island Canal: Kern Island Canal is an irrigation canal in Kern County, California.  It primarily irrigates farmland located on the Kern Lakebed, south of Bakersfield.  It originates from a common diversion at Manor Street in Bakersfield, which also supplies the Carrier Canal and Eastside Canal.  The common diversion originates from the Kern River about 1 mi south of Gordon's Ferry.

Buena Vista, Pennsylvania: Buena Vista ( ) is an unincorporated community in Elizabeth Township, Allegheny County, Pennsylvania, United States, located just outside Pittsburgh on the Youghiogheny River.  The Great Allegheny Passage rail trail runs through the community.  Buena Vista's ZIP code is 15018.  For a time, Buena Vista served as a mining town.  Like many places in the USA with this name, Buena Vista was named for the 1847 Battle of Buena Vista during the Mexican-American War.

Carrier Canal: Carrier Canal is an irrigation canal in Kern County, California.  It originates from a common diversion at Manor Street in Bakersfield, which also supplies the Kern Island Canal and Eastside Canal.  The common diversion originates from the Kern River about 1 mi south of Gordon's Ferry.  There are additional diversions from the Kern River at Golden State Highway (SR 204 freeway) and Coffee Road.  The canal terminates at the Kern River, near Enos Lane west of Bakersfield.  For its entire length, it runs roughly parallel to the Kern River.

Eastside Canal: Eastside Canal is an irrigation canal in Kern County, California.  It originates from a common diversion at Manor Street in Bakersfield, which also serves the Carrier Canal and Kern Island Canal.  The common diversion originates from the Kern River, about 1 mi south of Gordon's Ferry.  The canal terminates south of Bear Mountain Boulevard (SR 223), just west of Arvin.

Buena Vista Downtown Historic District: Buena Vista Downtown Historic District is a national historic district located at Buena Vista, Virginia.  The district encompasses 38 contributing buildings and 1 contributing structure in the central business district of Buena Vista.  The buildings are primarily one- and two-story masonry structures, with the earliest built in 1889-1890.  Notable buildings include the Buena Vista Post Office (1930), Buena Vista War Memorial Building (1954), Peoples Bank of Buena Vista (1907), Dickinson Building (c. 1907), Royer’s Restaurant (c. 1940), the Advocate Building (1889), Buena Vista Masonic Building (c. 1910), and the Valley Steam Laundry Building (c. 1905).  The Buena Vista Company Building (1890) is separately listed as the Old Courthouse.

Buena Vista Slough: Buena Vista Slough was the joint outlet of an overflowing Buena Vista Lake and a distributary of the Kern River into Tulare Lake.  It is now diverted into a system of canals by the Outlet Canal of the Central Valley Project.

Lake Webb (California): Lake Webb is a manmade recreational lake in Kern County, California.  It is primarily a motorboat, jet skiing, and waterskiing lake.  It is one of two lakes that are part of the Buena Vista Aquatic Recreation Area southwest of Bakersfield.  The lake is located on the lakebed of the former Buena Vista Lake.

Supporting paragraphs: Buena Vista Canal Coachella Canal
Answer: Buena Vista Canal