Question: California, Cincinnati is a small neighborhood in the city of Cincinnati, also commonly called Grove Park, after Coney Island's original name, It is located at the confluence of the Little Miami River and Ohio River, The Ohio River, which streams westward from Pittsburgh, Pennsylvania, to which location?
Context: The Ohio River, which streams westward from Pittsburgh, Pennsylvania, to Cairo, Illinois, is the largest tributary, by volume, of the Mississippi River in the United States.  At the confluence, the Ohio is considerably bigger than the Mississippi (Ohio at Cairo: 281,500 cu ft/s (7,960 m/s); Mississippi at Thebes: 208,200 cu ft/s (5,897 m/s)) and, thus, is hydrologically the main stream of the whole river system. Turtle Creek is a 13.7 mi tributary of the Little Miami River in Turtlecreek Township, Warren County, Ohio, which takes its name from this creek.  Turtle Creek is named for Chief Little Turtle, of the Miami Indian Tribe Turtle Creek is a tributary within the Little Miami and Ohio River watersheds. The Battle of Piqua, also known as the Battle of Pekowee or Pekowi, was part of the western campaign during the American Revolutionary War.  Led by General George Rogers Clark, over 1,000 soldiers (among them Daniel Boone and Simon Kenton) crossed the Ohio River near present-day Cincinnati and burned five Shawnee villages, including Old Chillicothe, along the Little Miami River.  Peter Loramie's Store, a British trading post-located in what was later Fort Loramie, Ohio in Shelby County, Ohio-, was also burned by Clark's men.  The Shawnee gradually withdrew during the first few days before finally engaging American forces 7 miles west of Springfield, Ohio on August 8, 1780.  Joseph Rogers, a cousin of George Rogers Clark, had previously accompanied him to Kentucky and was later captured by the Shawnee near Maysville.  Despite having been adopted by the tribe, he was killed during the battle while trying to join American forces. The Loveland Bike Trail is a rail trail in Ohio.  It is a section of the Little Miami Scenic Trail within the Loveland, Ohio city limits in Clermont County.  Like most of the longer trail, it was built along the right-of-way of the abandoned Little Miami Railroad, on the Little Miami River.  Along with 15 other city parks, the trail corridor is maintained by City of Loveland Recreation Commission.  The trail was opened in the 1980s and became part of the Little Miami Scenic Trail in 1984.  More than 100,000 people accessed the Little Miami Scenic Trail via the Loveland trailhead in 2014. Milford is a city in Clermont and Hamilton counties in the U.S. state of Ohio, along the Little Miami River in the southwestern part of the state.  It is a part of Greater Cincinnati.  Milford, an abbreviated form of mill ford, was so named because it was the first safe ford across the Little Miami north of the Ohio River, and was the only way for many people to reach the local mill.  The population was 6,709 at the 2010 census.  The Little Miami Bike Trail, which runs from Newtown to Springfield, Ohio, runs through Milford where several major hiking trails converge, including the American Discovery Trail, the Sea to Sea Long Distance Hiking Route, and the Underground Railroad Cycling Route.  The city is served by the Milford Exempted Village Schools. Middletown Junction is an unincorporated community and was the point in northwestern Hamilton Township, Warren County, Ohio, United States, on the eastern bank of the Little Miami River where the Middletown and Cincinnati Railroad joined with the Little Miami Railroad about midway between Kings Mills and South Lebanon.  The Little Miami Scenic Trail runs through here today. The Ohio River Water Trail, navigates the counties of Allegheny, Beaver, Columbiana, and Hancock in the states of Ohio, Pennsylvania, and West Virginia.  The trail is under the stewardship of the Ohio River Trail Council.  The Water Trail or Blueway geographically extends from the Three Rivers Water Trail in Pittsburgh, PA to Newell, WV and East Liverpool, OH.  The 69-mile Ohio River Water Trail (ORWT) includes thirteen-miles of the Ohio River along the Three Rivers Water Trail from "The Point" in Pittsburgh at milepost zero downstream to the Dashields Lock and Dam at milepost 13, thirty-three-miles of the Ohio River from Dashields Dam at milepost 13, downstream to Newell, WV at milepost 46.0, sixteen-miles of the Little Beaver Creek to Beaver Creek State Park, three-miles of the Beaver River to the Townsend (Fallston) Dam, and four-miles of the Raccoon Creek. Cincinnati Municipal Airport – Lunken Field (Cincinnati Municipal Lunken Airport) (IATA: LUK, ICAO: KLUK, FAA LID: LUK) is a public airport in Cincinnati, Ohio, three miles (5 km) southeast of Downtown Cincinnati.  It is owned by the city of Cincinnati and serves private aircraft and the fleets of local corporations.  It serves a few commercial flights and is the second largest airport serving Cincinnati after Cincinnati/Northern Kentucky International Airport.  It is known as Lunken Airport or Lunken Field, after Eshelby Lunken.  It is bounded by US Route 50 (historic Columbia Parkway and Eastern Avenue) to the west, US Route 52 (Kellogg Avenue) and the Ohio River to the south, the Little Miami River (which originally flowed through the airfield but was diverted) to the east, and Ohio Route 125 (Beechmont Avenue) to the north.  The airport is headquarters and hub for Cincinnati-based public charter airline Ultimate Air Shuttle, serving 5 destinations in the eastern United States with 16 peak daily flights.  Lunken is also home to small charter airline Flamingo Air and its aviation school. The Little Miami River (Shawnee: "Cakimiyamithiipi" ) is a Class I tributary of the Ohio River that flows 111 mi through five counties in southwestern Ohio in the United States.  The Little Miami joins the Ohio River east of Cincinnati.  It forms parts of the borders between Hamilton and Clermont counties and between Hamilton and Warren counties.  The Little Miami River is one of 156 American rivers designated by the U.S. Congress or the Secretary of the Interior as a National Wild and Scenic River and lends its name to the adjacent Little Miami Scenic Trail. California, Cincinnati is a small neighborhood in the city of Cincinnati, also commonly called Grove Park, after Coney Island's original name.  It is located at the confluence of the Little Miami River and Ohio River.  Because of this, many of its historical homes have water damage.  It is not uncommon to see a home with two or three stories only being inhabited on the uppermost story.  It is also the location of the Greater Cincinnati Water Works' main treatment plant.  California borders the Cincinnati neighborhoods of Mt. Washington, Linwood, the East End, and Columbia-Tusculum, as well as Anderson Township.
Answer: Cairo, Illinois