Question: Where does the city where Deckard was arrested in Blade Runner, get its water supply?

full_context: Document 1: Southern California: To the east is the Colorado Desert and the Colorado River at the border with Arizona, and the Mojave Desert at the border with the state of Nevada. To the south is the Mexico–United States border.
Document 2: Taxi Driver: Some critics showed concern over 12-year-old Foster's presence during the climactic shoot-out. Foster said that she was present during the setup and staging of the special effects used during the scene; the entire process was explained and demonstrated for her, step by step. Moreover, Foster said, she was fascinated and entertained by the behind-the-scenes preparation that went into the scene. In addition, before being given the part, Foster was subjected to psychological testing, attending sessions with a UCLA psychiatrist, to ensure that she would not be emotionally scarred by her role, in accordance with California Labor Board requirements monitoring children's welfare on film sets.Copies of the film distributed for TV broadcast had an unexplained disclaimer added during the closing credits:
Document 3: The Cell: Serial killer Carl Rudolph Stargher (Vincent D'Onofrio) traps his victims in a cell in the form of a glass enclosure that slowly fills with water by means of an automatic timer, then uses a hoist in his basement to suspend himself above their bodies while watching the recorded video of their deaths. He succumbs to the same schizophrenic illness and falls into a coma just as the FBI identifies him, leaving them without any leads as to the location of his latest victim, Julia Hickson (Tara Subkoff). After learning of this experimental technology, Agent Peter Novak (Vince Vaughn) persuades Deane to enter Stargher's mind and discover Hickson's location.
Document 4: Owens River Gorge: The Owens River Gorge is a steep 10 mi (16 km) canyon on the upper Owens River in eastern California in the United States. The canyon is located at the eastern edge of the Sierra Nevada mountains in southern Mono County, along the stretch of the river where it exits the Long Valley near its source and enters the north end of Owens Valley. The gorge is a popular destination for rock climbing.
Document 5: The Terminator: In 1984 Los Angeles, a cyborg assassin known as a Terminator arrives from 2029 and steals guns and clothes. Shortly afterward, Kyle Reese, a human soldier from 2029, arrives. He steals clothes and evades the police. The Terminator begins systematically killing women named Sarah Connor, whose addresses he finds in the telephone directory. He tracks the last Sarah Connor to a nightclub, but Kyle rescues her. The pair steal a car and escape with the Terminator pursuing them in a police car.
Document 6: Water in California: Rivers of the Lahontan watersheds in eastern California are part of the high desert Great Basin and do not drain to the Pacific. Most of the water is used locally in eastern California and western Nevada for irrigation. The Owens River of the South Lahontan region, however, is a principal source of water for Los Angeles.
Document 7: Colorado River: Colorado River The Colorado River at Horseshoe Bend, Arizona, a few miles below Glen Canyon Dam Countries United States, Mexico States Colorado, Utah, Arizona, Nevada, California, Baja California, Sonora Tributaries - left Fraser River, Blue River, Eagle River, Roaring Fork River, Gunnison River, Dolores River, San Juan River, Little Colorado River, Bill Williams River, Gila River - right Green River, Dirty Devil River, Escalante River, Kanab River, Virgin River, Hardy River Cities Glenwood Springs, CO, Grand Junction, CO, Moab, UT, Page, AZ, Bullhead City, AZ, Lake Havasu City, AZ, Yuma, AZ, San Luis Rio Colorado, SON Source La Poudre Pass - location Rocky Mountains, Colorado, United States - elevation 10,184 ft (3,104 m) - coordinates 40 ° 28 ′ 20 ''N 105 ° 49 ′ 34'' W ﻿ / ﻿ 40.47222 ° N 105.82611 ° W ﻿ / 40.47222; - 105.82611 Mouth Gulf of California - location Colorado River Delta, Baja California -- Sonora, Mexico - elevation 0 ft (0 m) - coordinates 31 ° 54 ′ 00 ''N 114 ° 57 ′ 03'' W ﻿ / ﻿ 31.90000 ° N 114.95083 ° W ﻿ / 31.90000; - 114.95083 Coordinates: 31 ° 54 ′ 00 ''N 114 ° 57 ′ 03'' W ﻿ / ﻿ 31.90000 ° N 114.95083 ° W ﻿ / 31.90000; - 114.95083 Length 1,450 mi (2,334 km) Basin 246,000 sq mi (637,137 km) Discharge for mouth (average virgin flow), max and min at Topock, AZ, 300 mi (480 km) from the mouth - average 22,500 cu ft / s (637 m / s) - max 384,000 cu ft / s (10,900 m / s) - min 422 cu ft / s (12 m / s) Map of the Colorado River basin Wikimedia Commons: Colorado River
Document 8: The Belko Experiment: In a rage, Mike kills Barry with a tape dispenser. The building is then unsealed, as he is the last survivor, and the soldiers escort him to the hangar next door. There, he meets the owner of the voice (Gregg Henry), who introduces himself as a social scientist who believes that discoveries about human nature can only come from placing people in extreme environments. As he and his colleagues begin to question Mike about his emotional and mental state, Mike notices a panel of switches that correspond to the eighty employees. Having planted the trackers that Marty collected on the soldiers and the Voice, he flips every switch except his own. The trackers explode, killing the soldiers and wounding the Voice, before Mike grabs a gun and kills the remaining scientists. The Voice attempts to reason with Mike but Mike kills him. He then leaves the warehouse in a state of shock. The view zooms out to reveal that Mike is one of many sole survivors from similar experiments, being watched by another group through security cameras. A new voice states ``end stage one ''and`` commence stage two.''
Document 9: Geography of the United States: West of the Rocky Mountains lies the Intermontane Plateaus (also known as the Intermountain West), a large, arid desert lying between the Rockies and the Cascades and Sierra Nevada ranges. The large southern portion, known as the Great Basin, consists of salt flats, drainage basins, and many small north-south mountain ranges. The Southwest is predominantly a low-lying desert region. A portion known as the Colorado Plateau, centered around the Four Corners region, is considered to have some of the most spectacular scenery in the world. It is accentuated in such national parks as Grand Canyon, Arches, Mesa Verde National Park and Bryce Canyon, among others. Other smaller Intermontane areas include the Columbia Plateau covering eastern Washington, western Idaho and northeast Oregon and the Snake River Plain in Southern Idaho.
Document 10: Geography of California: California is a U.S. state on the western coast of North America. Covering an area of , California is geographically diverse. The Sierra Nevada, the fertile farmlands of the Central Valley, and the arid Mojave Desert of the south are some of the major geographic features of this U.S. state. It is home to some of the world's most exceptional trees: the tallest (coast redwood), most massive (Giant Sequoia), and oldest (bristlecone pine). It is also home to both the highest (Mount Whitney) and lowest (Death Valley) points in the 48 contiguous states.
Document 11: Ghost in the Shell: Stand Alone Complex: The series centers on the members of an elite law enforcement unit known as Public Security Section 9 as they investigate cybercrime and terrorism cases; these cases often are connected to their pursuit of an elite ``Super Class A ''hacker and corporate terrorist known as`` The Laughing Man''. A series of associated short comic animations, titled Tachikomatic Days, aired after each episode. These shorts star the Tachikoma ``think - tanks ''from the main series, and they typically relate directly to the story of the preceding Stand Alone Complex episode.
Document 12: Red Desert (Wyoming): The Red Desert is a high altitude desert and sagebrush steppe located in south central Wyoming, comprising approximately 9,320 square miles (24,000 km). Among the natural features in the Red Desert region are the Great Divide Basin, a unique endorheic drainage basin formed by a division in the Continental Divide, and the Killpecker Sand Dunes, the largest living dune system in the United States. In the 19th century, the Oregon, California and Mormon Trails crossed the Continental Divide at South Pass, just north of the Red Desert. Today, busy Interstate 80 bisects the desert's southern region while gas field roads cross the desert.
Document 13: Prometheus (2012 film): A monstrous, mutated Fifield returns to the Prometheus and kills several crew members before he is killed. The Prometheus' captain, Janek, speculates that the structure was an Engineer military base that lost control of a virulent biological weapon, the dark liquid. He also determines that the structure houses a spacecraft. Weyland and a team return to the structure, accompanied by Shaw. David wakes the Engineer from stasis and speaks to him in an attempt to explain what Weyland wants. The Engineer responds by decapitating David and killing Weyland and his team, before reactivating the spacecraft. Shaw flees and warns Janek that the Engineer is planning to release the liquid on Earth, convincing him to stop the spacecraft. Janek and the remaining crew sacrifice themselves by ramming the Prometheus into the alien craft, ejecting the lifeboat in the process, while Vickers flees in an escape pod. The Engineer's disabled spacecraft crashes onto the ground, killing Vickers. Shaw goes to the lifeboat and finds her alien offspring is alive and has grown to gigantic size. David's still-active head warns Shaw that the Engineer is pursuing her. The Engineer forces open the lifeboat's airlock and attacks Shaw, who releases her alien offspring onto the Engineer; it thrusts an ovipositor down the Engineer's throat, subduing him. Shaw recovers David's remains, and with his help, launches another Engineer spacecraft. She intends to reach the Engineers' homeworld in an attempt to understand why they wanted to destroy humanity.
Document 14: Blade Runner: In 2019 Los Angeles, former police officer Rick Deckard is detained by officer Gaff, and brought to his former supervisor, Bryant. Deckard, whose job as a "blade runner" was to track down bioengineered beings known as replicants and "retire" (kill) them, is informed that four are on Earth illegally. Deckard starts to leave, but Bryant ambiguously threatens him, and he stays. The two watch a video of a blade runner named Holden administering the "Voigt-Kampff" test, which is designed to distinguish replicants from humans based on their emotional response to questions. The test subject, Leon, shoots Holden on the second question. Bryant wants Deckard to retire Leon and the other three Tyrell Corporation Nexus-6 replicants: Roy Batty, Zhora, and Pris.
Document 15: Water in California: The Colorado River originates more than 1,000 miles (1,600 km) from California in the Rocky Mountains of Colorado and Wyoming and forms the state's southeastern border in the Mojave Desert. Unlike the other California watersheds, essentially all of the water flowing in the Colorado originates outside the state. The Colorado is a critical source of irrigation and urban water for southern California, providing between 55 and 65 percent of the total supply.
ground_truth: Owens River
sub_queries: Where was Deckard arrested? Answer: Los Angeles
where does Los Angeles get its water supply Answer: Owens River