The Oaxaca reservoir that dropped to a historic low during a severe drought is now almost too full, reports the National Water Commission, or Conagua.
Tropical storm Beatriz, which made landfall near Puerto Ángel June 1, brought the reservoir up from 14% to 88.9.
Rainfall is the last 10 days has raised levels to the point where the reservoir is at 99.9% capacity and authorities now say it is necessary to release some of water into the Tehuantepec River.
Preventative measure are being put in place in six municipalities downstream.
The reservoir is located behind the Benito Juárez dam in Santa María Jalapa del Marqués in the Isthmus of Tehuantepec.
Millions of pesos in emergency funding were spent on providing water to areas left stricken by the drought, described by ranchers as the worst in 50 years.
The state and Conagua announced April 6 they would spend 345 million pesos (US $18.5 million) on drought relief efforts in 41 municipalities that had been affected.
The money would be spent on drilling wells, purchasing water trucks and conducting maintenance on existing wells for the benefit of both households and farmers and fishermen, officials said.
Source: El Universal (sp)