Aerial view. MEXICO CITY, ORIGINALLY FOUNDED ON A LAKE, TRANSFORMED ITS ORIGINAL WATERSCAPE AND TODAY FACES ONE OF THE MOST COMPLEX WATER MANAGEMENT SITUATIONS WORLDWIDE, HAVING TO DEAL WITH A PARADOX OF EXCESS OF RAIN AND SCARCITY OF DRINKING WATER. The city drains 71 m 3 /s of combined waste & rainwater. Today Mexico City faces two water related challenges: water supply and drainage. The original lake system consisted of five waterbodies that became one during the rainy season. The runoffs from the surrounding mountains nourished these waterbodies. The inhabitants were able to acces water from springs and rivers. This strategy focuses on developing an alternate, decentralized, and sustainable water management system. The scope is to promote grass roots initiatives that transform public spaces around the city into soft water management landscapes. This can be achieved by implementig strategies such as rainwater harvesting, natural infiltration, runoff retention, reforestation of the hillsides, stream and river remediation, and the transformation of wastelands into landscape infrastructures. Such is the case of Parque Hídrico Quebradora. This will be the first of its type in Mexico and will set a paradigm for the future design of public spaces around urban areas in the country. The drainage system has been constructed during 500 years. The last tunnel, Túnel Emisor Oriente, has a length of 42 km and a diameter of 7 m. Today it is known that it will be insufficient by 2050. After colonization, the city’s design was transformed into an earth and stone grid, covering canals and making it vulnerable to floods. These events harmed the city and were the main cause to decide on dessicating the lake system by artifically perforating the basin. It permitted the growth of a 22 million inhabitant megalopolis that still struggles with floods and supply of drinking ORIGINAL BASIN CURRENT BASIN PROPOSED BASIN The Basin of Mexico is a closed or endorheic basin, naturally catching the surrounding runoffs of 47 rivers in the lowest central areas and creating a 1100 km 2 lake system. In the center of Lake Texcoco the city of Tenochtitlán was founded in 1325. Our objetive is to promote dense urban fabric that supports the permeability of unurbanized hillsides, clean water runoffs and the preservation of natural landscapes that can still serve the purpose of soft water management infrastructures, forming a green belt. HYDROPUNCTURE 20 m 3 /s of drinking water are supplied by a 123 km long aqueduct that needs to pump up the liquid to a height of 1 km to reach Mexico City. The city needs to supply 83 m 3 /s of drinking water. 59.5 m 3 /s are supplied by by a system of more than 1600 extraction wells. FROM CHALLENGE TO SOLUTION HYDROPUNCTURE Publicly-accessible water retention system and treatment complex LA QUEBRADORA HYDRIC PARK Santiago Arau Iztapalapa Borough NYT Project team Santiago Arau Project team Project team Project team biomatrixwater.com / fundacionunam.org.mx / mvsnoticias.com / Project team Project team Miguel Espinosa Project team expansion.mx water to its population. Additionally, the clayish lakebed, now the soil of the city, makes it extremely vulnerable to earthquakes. The city was designed through a grid of canals and floating earth platforms called chinampas . This strategy permited the natural flow of water. Through HYDROPUNCTURE strategies we aim to consolidate an alternate, decentralized, and sustainable water management system for the Basin of Mexico.