How did the Aztecs use Lake Texcoco for food and transportation?

The Aztecs utilized Lake Texcoco as a vital resource for both sustenance and infrastructure, transforming the environment to support their growing civilization.

Food Production

The Aztecs practiced intensive agriculture through the construction of chinampas, or raised fields. They created these by piling rich lake sediment into ridges between canals, which allowed for multiple annual harvests. To manage the lake's salinity, they used a system of dikes and sluice gates to create a freshwater bay suitable for cultivation. Beyond farming, the lake provided a diverse array of aquatic food sources, including fish, waterfowl, insect larvae, tadpoles, frogs, salamanders, and floating algae. Additionally, the lake served as a major source of salt.123

Transportation

The lake system, which included natural connections and artificial canals, served as a primary transportation network that facilitated economic and political integration across the Valley of Mexico. The Aztecs built an intricate network of canals that allowed canoes to travel throughout Tenochtitlán and to surrounding settlements. Furthermore, they constructed three major causeways to connect their island capital to the mainland, integrating the city into the broader regional landscape.12