Gatun Lake

Gatun Lake, which forms a key stretch of the canal system and provides fresh water for its locks, saw little rain this year, as El Niño triggered a withering drought.

Water levels in Gatun Lake, the rainfall-fed reservoir that is the main source of water used in the canal's lock system, have "continued to decline to unprecedented levels for this time of year," according to the ACP.

Prosecutors in Panama say an 18-year-old man has been charged following the killing of seven youths who were on a swimming trip to Gatún Lake.

Mass killings like the one by Gatún Lake are unusual in Panama.

The attack took place near Gatun Lake, a scenic man-made lake that forms an important part of the Panama Canal.