Information:  - Mexico (, modern Nahuatl ), officially the United Mexican States, is a federal republic in the southern half of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost two million square kilometers (over 760,000 sq mi), Mexico is the sixth largest country in the Americas by total area and the 13th largest independent nation in the world. With an estimated population of over 120 million, it is the eleventh most populous country and the most populous Spanish-speaking country in the world while being the second most populous country in Latin America. Mexico is a federation comprising 31 states and a federal district that is also its capital and most populous city. Other metropolises include Guadalajara, Monterrey, Puebla, Toluca, Tijuana and León.  - Harris County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 4,092,459, making it the most populous county in Texas and the third-most populous county in the United States. Its county seat is Houston, the largest city in Texas and fourth-largest city in the United States. The county was founded in 1836 and organized in 1837. It is named for John Richardson Harris, an early settler of the area.  - Buffalo Bayou is a shady, slow-moving river and a main waterway, known as the "Mother Bayou," flowing through Houston in Harris County, Texas. Formed some 18,000 years ago, it has its source in the rapidly developing prairie of Katy, Fort Bend County, Texas, and flows approximately east through the Houston Ship Channel and into Galveston Bay and the Gulf of Mexico. In addition to drainage water impounded and released by Addicks and Barker Dams, the bayou is fed by natural springs, surface runoff from streets, parking lots, and highways, and several significant tributary bayous, such as White Oak Bayou, Greens Bayou, and Brays Bayou.  - Fort Bend County is a county in the U.S. state of Texas. As of the 2010 census, its population was 585,375, making it the tenth-most populous county in Texas. Fort Bend County is the wealthiest county in Texas with a median household income of $95,389 and a median family income of $105,944, having surpassed Collin and Rockwall counties (Dallas suburbs) since the 2000 census. The county seat is Richmond, while its largest city is Sugar Land. The county was founded in 1837 and organized the next year. It is named for a blockhouse at a bend of the Brazos River; the fort was the start of the community in early days.  - The Addicks Reservoir and Addicks Dam in conjunction with the Barker Reservoir prevent downstream flooding of Buffalo Bayou in the City of Houston . Both reservoirs were authorized under the Rivers and Harbors Act of June 20 , 1938 , which were modified by the Flood Control Acts of August 11 , 1938 ; September 3 , 1954 ; and October 27 , 1965 .  - White Oak Bayou is one of the several waterways that give Houston, Texas, United States its popular nickname "The Bayou City." The Bayou originates northwest of FM 1960, near Highway 6 and U.S. Highway 290/Northwest Freeway, and meanders generally toward the southeast until it joins Buffalo Bayou in downtown Houston.  - The Gulf of Mexico is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Alabama, Florida, Louisiana, Mississippi and Texas border the Gulf on the north, which are often referred to as the "Third Coast" in comparison with the U.S. Atlantic and Pacific coasts, or sometimes the "south coast", in juxtaposition to the Great Lakes region being the "north coast." One of the gulf's seven main areas is the Gulf of Mexico basin.  - Houston is the most populous city in Texas and the fourth-most populous city in the United States after Chicago, located in Southeast Texas near the Gulf of Mexico. With a census-estimated 2014 population of 2.239 million within an area of , it also is the largest city in the Southern United States, as well as the seat of Harris County. It is the principal city of HoustonThe WoodlandsSugar Land, which is the fifth-most populated metropolitan area in the United States of America.  - In usage in the United States, a bayou (or , from Cajun French) is a body of water typically found in a flat, low-lying area, and can be either an extremely slow-moving stream or river (often with a poorly defined shoreline), or a marshy lake or wetland. The name "bayou" can also refer to a creek whose current reverses daily due to tides and which contains brackish water highly conducive to fish life and plankton. Bayous are commonly found in the Gulf Coast region of the southern United States, notably the Mississippi River Delta, with the states of Louisiana and Texas being famous for them. A bayou is frequently an anabranch or minor braid of a braided channel that is moving much more slowly than the mainstem, often becoming boggy and stagnant. Though fauna varies by region, many bayous are home to crawfish, certain species of shrimp, other shellfish, catfish, frogs, toads, American alligators, American crocodiles, herons, turtles, spoonbills, snakes, leeches, and a myriad of other species. Etymology. The word was first used by the English in Louisiana and is thought to originate from the Choctaw word "bayuk", which means "small stream". The first settlements of Bayou Teche, and other bayous, were by the Creoles, and that is why bayous are associated with Creole culture.  - "(This article is about the Barker Reservoir near Houston, Texas. For the reservoir near Nederland, Colorado, see Barker Meadow Reservoir)."  - Barker Reservoir is a water supply reservoir in the Colorado Front Range located near the town of Nederland, Colorado in southwestern Boulder County.  - The Houston Ship Channel, in Houston, Texas, is part of the Port of Houston, one of the US's busiest seaports. The channel is the conduit for ocean-going vessels between Houston-area terminals and the Gulf of Mexico, and it serves an increasing volume of inland barge traffic.  - The Town of Nederland, locally known as "Ned", is a Statutory Town located near Barker Meadow Reservoir in the mountains of southwest Boulder County, Colorado, United States. As of the 2010 census it had a population of 1,445.  - Galveston Bay is the 7th largest estuary in the United States, located along the upper coast of Texas. It is connected to the Gulf of Mexico and is surrounded by sub-tropic marshes and prairies on the mainland. The water in the Bay is a complex mixture of sea water and fresh water which supports a wide variety of marine life.    Given the information, choose the subject and object entities that have the relation of 'located in the administrative territorial entity'.
The answer to this question is:
addicks reservoir , texas