The Panama Canal Authority will lower the maximum authorized draft for vessels transiting its Neopanamax locks from 50 feet to 49.5 feet of tropical fresh water starting July 3, citing the risk of a developing El Niño later this year. It is the first operational restriction announced by the canal in 2026 and is far milder than the cuts imposed during the 2023 to 2024 drought that snarled global shipping.
Canal Administrator Ricaurte Vásquez Morales said planners are reviewing draft rules months earlier than usual to avoid a repeat of the severe congestion seen during the last dry cycle. The U.S. National Oceanic and Atmospheric Administration puts the odds of El Niño forming during the May to July window at 82 percent, rising to 96 percent that the pattern persists through the 2026 to 2027 northern winter.
The timing matters because the canal is currently running close to its physical ceiling. BIMCO data show transits up 8 percent year over year in 2026 at an average of 38 vessels a day, with a 16 percent surge in the five weeks through mid May as Strait of Hormuz disruption pushed more U.S. crude, LNG and refined products toward Asia via Panama.
Water saving measures introduced in late 2025 are still in force, including tandem lockages for smaller ships, expanded use of the Neopanamax water saving basins, deployment of interior lock gates and a suspension of hydroelectric generation at Gatun. The canal depends on rainfall captured in Gatun and Alhajuela lakes, which also supply drinking water to more than half of Panama's population.
A six inch draft cut will have only a limited impact on most ships transiting today, but the announcement signals that operators routing tankers, LNG carriers and container ships through the waterway should plan for tighter rules later in the year if Gatun levels start to fall. The ACP said further adjustments are possible depending on hydrological conditions.