when did the aztecs arrived at lake texcoco
Lake Texcoco Tenochtitlan was founded on an islet in the western part of the lake in the year 1325. Around it, the Aztecs created a large artificial island using a system similar to the creation of chinampas. To overcome the problems of drinking water, the Aztecs built a system of dams to separate the salty waters of the lake from the rain water of the effluents.[3] It also permitted them to control the level of the lake. The city also had an inner system of channels that helped to control the water.