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Dozens of ships waiting to cross the Panama Canal as it maintains restrictions on the crossing of vessels due to a drought in Panama City. Image Credit: AFP

Panama City: Panama is looking into new sources of water for the Panama Canal, which moves six percent of global maritime trade but recently had to restrict traffic due to drought, its operator said.

The canal, a wonder of engineering that provides a shortcut between the Atlantic and Pacific, expects to lose tens of millions of dollars after having to curb traffic from about 40 to 32 ships per day.

Ricuarte Vasquez, the canal's administrator, told reporters in Panama Tuesday that "another source of (water) supply is needed to regulate Gatun Lake" - an artificial reservoir that is a key part of the 50-mile (80-kilometer) waterway inaugurated in 1914.

It is used mainly by clients from the United States, China, and Japan.

Each ship moving through the canal requires 200 million liters of freshwater to move it through an intricate system of locks, provided by two artificial lakes fed by rainfall.

The lakes also supply drinking water to half the country of about 4.2 million people.

However, Panama is facing a biting drought, made worse by the El Nino weather phenomenon, which has also forced canal administrators to restrict the waterway to ships with a maximum draft (water depth) of 13.11 meters (43 feet).

The restrictions are expected to lead to a drop in earnings of some $200 million in 2024.

Vasquez said one option being considered was the construction of a dam on the Indio River, west of the canal, from where water could be transferred to Gatun Lake via an eight-kilometer pipeline.

Another is to extract water from the Bayano Lake to the east, Panama's second largest after Gatun.

"Indeed there is a different weather pattern that is affecting rainfall levels," Vasquez said of the predicament.

The canal recorded a record queue of 163 ships on August 9. By Tuesday, the number was down to 116.