The borough is located in the northwest of Mexico City, just west of the
historic center. The borough is divided into eighty one neighborhoods called
colonias. The largest of these is Bosques de las Lomas at 3.2 km2, and the smallest is Popo Ampliación with only 0.33 km2. It is bordered by the boroughs of
Azcapotzalco,
Cuauhtémoc,
Benito Juárez,
Álvaro Obregón and
Cuajimalpa, and the
State of Mexico to the west. It has a territory of 47.68 km2 which is 3.17 percent of the total Mexico City. The borough consists of an area which used to the west bank of
Lake Texcoco, with three major zones,
Tacuba,
Chapultepec and
Tacubaya. The geography of the borough includes canyons, hills and mesas associated with the
Sierra de las Cruces, most present in the southwest bordering Cuajimalpa. In the northeast, mostly defined by the Interior Circuit ringway. The most important elevation is the Cerro de Chapultepec at 2,260masl. One of the newest parks in the borough is located on Lago Caneguin in Colonia Argentina, created over a former roadway called Ruta 100. The unnamed park has 10,000 meters of surface area, kiosk, gymnasium, bicycle path, multipurpose room, parking, rain water containment system and child care center. It serves about 40,000 area residents. In 2008, reforestation efforts were undertaken, beginning at the Cañitas Park. While there were important rivers here such as Remedios, today there are no longer any free flowing currents of water. The climate is semi moist and temperate with annual rainfall varying between 700 and 800mm. The average annual temperature is 15C with lows in the winter about 8C and highs around 19C. These areas include the América, Daniel Garza, 16 de Septiembre, Daniel Garza Apliación and Observatorio neighborhoods, which are particularly affected, but the problem also is found in El Capulín, Monte Sol and Ex Hacienda de Pedregal. The number of people living in these areas is estimated at over 25,000, and about 500 families living in very high risk areas. Abandoned mines have also been detected in Tacubaya, Lomas Altas, Bosque de las Lomas and even under Chapultepec Park. ==Demographics and socioeconomics==