Panama Canal Authority lowers maximum draft level after issuing El Niño warning

The Panama Canal Authority (ACP) has made its first reduction in maximum navigable drafts after issuing a warning over potential water issues arising based on what is projected to be a potentially severe El Niño weather pattern that has, in the past, caused drought conditions for the Central American nation.

The notice to shipping came on 4 June 2026, in what the ACP said was part of its water management strategy. 

"Considering the potential development of an El Niño phenomenon over the watershed in the upcoming months, the ACP will implement a draft reduction at the Neopanamax Locks. The ACP will continue to closely monitor lake levels and hydrological projections and will announce any additional operational adjustments as deemed necessary," the organisation said.

Based on current and projected water levels at Gatun Lake, the ACP said the new draft restriction would become effective on 3 July 2026, when the maximum authorised draft for vessels transiting the Neopanamax Locks will be 15.09 m (49.5 ft), Tropical Fresh Water.

Citing ’historically high’ levels in its Gatún Lake reservoir, in early May 2026, the ACP said it did not foresee the need for overall transit restrictions in 2026.

The Panama Canal Authority has said it has been carefully monitoring water levels and weather models as it faces what it calls "greater climate variability".

A dry season that was "among the wettest on record since 1950" has prompted the canal authority to "strengthen water reserves in Gatún and Alhajuela Lakes", two of the reservoirs used for both canal transits and water supplies for more than half of the country’s population.

The ACP has undertaken what it says is continuous monitoring of "the El Niño scenario" since late 2025 and began to implement water-saving measures at the locks. 

"Panama Canal updates lake-level projections every week, evaluating possible water-deficit scenarios for May and June 2026, while also maintaining 38 daily transits. Current data does not forecast the need for transit restrictions through December 31, 2026," the ACP said in May.

Under typical water level conditions, the Panama Canal has capacity for 34 to 38 daily transits, but the Canal Authority was forced to cull transits during 2023 and into early 2024, due to low water levels after an El Niño climate cycle across the tropical Pacific contributed to a drought.

According to the Panama Canal Authority, October 2023 saw its lowest levels of rainfall since the earliest recorded registers. 

"History indicates that the most pronounced impacts of moderate or strong El Niño events tend to be reflected more clearly in the subsequent year, as was the pattern in 1982–1983, 1997–1998, 2015–2016, and 2023–2024. Accordingly, operational projections for 2027 are already being developed," the ACP said in May.

With the Strait of Hormuz seeing only a trickle of vessel traffic and a significant percentage of traffic through the Suez Canal diverted around Africa’s Cape of Good Hope, further restrictions through major maritime waterways would be likely to place added strain on supply chains, drive up consumer costs, and further reshape global trade patterns, impacting vulnerable economies disproportionately, according to UN trade and development body UNCTAD.

World Oceans Day

The UN-based International Maritime Organization (IMO) marked World Oceans Day, celebrated on 8 June each year, with a call for the industry to "step up implementation of measures to protect the marine environment".

"At IMO, we take our responsibility to protect the ocean seriously. With shipping being one of the main users of the ocean space, it is the reason why we focus on enhancing our regulatory framework to reduce pollution and address new challenges," IMO Secretary-General Arsenio Dominguez said in a video message for World Oceans Day.

"Beyond setting the rules, we must put policy into practice," Mr Dominguez said.