Tabasco was subject to heavy rain in 2007, causing widespread flooding and as much as 80% of the state was under water.
These were in process of construction when the 2007 floods hit. From October 28 to 30, unusually heavy rainfall caused the Grijalva River to rise, overflowing the Penitas Dam, as well as other area rivers. This eventually covered about eighty percent of the state's territory as deep as 4 meters (13 ft) in places, affecting over a million people. 
