The vast shallow lagoon is located in the east of the Colombian Andes, in an altitude of 2,540 m, approximately 80 km from Bogota. 200 families, fishermen and basketmakers depend directly on the lagoon. The water volume of the lagoon decreased by one metre in the past 30 years because of excessive water withdrawal of the tributaries for irrigation purposes. Additionally 6,700 tons of sediments are deposited every year in the lagoon.