Event guide · Maritime chokepoint

Panama Canal

Every other chokepoint on this site is threatened by politics. The Panama Canal is the one that runs out of water. Each transit spends tens of millions of litres of fresh water from a rain-fed lake — so a drought in Panama becomes a daily transit cap, and the cap becomes a queue, an auction, and a freight-rate story on US routes.

Current status

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This guide is maintained editorially. Last updated 8 August 2026.

Is the Panama Canal restricting transits?

The canal publishes its own answer seasonally: transit slots and maximum draft are set by the Panama Canal Authority based on water levels in Gatún Lake, the artificial lake that feeds the locks. In normal years the canal handles roughly 36–38 transits a day; during the severe 2023–24 El Niño drought the cap fell to around 22–24 at the trough, slot auctions saw shippers pay millions of dollars to jump the queue, and draft limits forced container ships to sail part-loaded. Restrictions ease when the rains return — which is why this is a recurring, weather-cycled event rather than a one-off.

Why a canal can have a drought problem

The Panama Canal is not a sea-level cut like Suez — ships climb 26 metres over the isthmus through locks, and every lockage releases fresh water from Gatún Lake to the sea. The lake is refilled by rainfall alone, and it also supplies drinking water to about half of Panama's population. When El Niño suppresses the rains, the Authority must ration lockages between shipping and citizens. The 2016 Neopanamax locks recycle some water, but the constraint is structural: the canal's capacity is a hydrological variable.

~5%

of global seaborne trade uses the canal in a normal year

~40%

of US container traffic touches its trade lanes

36→22

daily transits, normal vs. the 2023–24 drought trough

Why it matters to markets

Panama is the US chokepoint. Asia–US East Coast container services, US LNG and LPG exports to Asia, and grain shipments all price the canal into their routes. When slots tighten, the effects are asymmetric: container lines can reroute to US West Coast ports plus rail, LNG carriers often sail around Africa or via Suez, and bulk carriers absorb the queue. Each workaround has its own winners — rail operators, West Coast ports — and its own losers, which is exactly the both-sides structure Farlens maps.

Which sectors feel a restriction — both sides

Where pressure can help

US intermodal rail and West Coast port operators historically gain volume when East Coast all-water routes tighten. Carriers holding booked slots gain a scarce asset. LPG/LNG shipping rates firm as voyages lengthen.

Where pressure hurts

US East Coast importers and the retailers behind them absorb delay and auction costs. US LNG/LPG exporters lose netback margin to longer routes. Grain exporters compete for bulk slots in the queue.

Sector patterns describe historical tendencies, not predictions or recommendations. Any given episode can and does break the pattern.

A short history of Panama restrictions

2016 — Neopanamax locks open, tripling maximum vessel size and deepening the canal's role in US LNG trade.
2019–2020 — early warning: draft restrictions during a dry year foreshadow the structural water problem.
2023–24 — the severe El Niño drought: transit caps near 22/day, record slot-auction prices, months-long queue for non-booked vessels; normal operations restored as rains returned in 2024–25.

The canal authority has proposed new reservoir projects (Río Indio) to buffer future droughts — a multi-year build that keeps the hydrological constraint in play for years to come.