Why Is the Panama Canal So Important Today?

Why the canal is not just a sea level ditch

Unlike the Suez Canal, the Panama Canal is not a flat cut at sea level. Panama's terrain rises well above the ocean at the isthmus, so instead of digging an 85 meter deep trench through solid rock, engineers built a staircase of water. Ships are raised from the Atlantic side up to Gatun Lake, an artificial lake sitting about 26 meters, or 85 feet, above sea level, carried across roughly 33 kilometers of that lake and then the 13.7 kilometer Culebra Cut, then lowered back down to sea level on the Pacific side. The lake itself was formed by damming the Chagres River, and it does double duty as both the crossing and the fresh water supply that fills the locks.

How the locks actually work

A lock is a walled chamber with gates at each end. A ship enters, the gate behind it closes, and fresh water is let in or out by gravity alone, no pumps, until the chamber matches the level on the other side. The gate ahead then opens and the ship moves on. The original locks, opened in 1914, work in pairs so traffic can move in both directions at once; the newer, wider locks added in 2016 use rolling gates and their own water saving basins that reuse a share of each chamber's water rather than draining it straight to the sea. Getting from ocean to lake, or lake to ocean, normally takes three chambers of lift or descent.

The 2016 expansion and Neopanamax ships

For a century the canal's original locks capped ship size at what became known as Panamax dimensions, a limit that shaped container ship design worldwide. A new, wider set of locks opened in June 2016, built to handle Neopanamax vessels. The ACP describes the expansion as doubling the waterway's cargo capacity; an individual Neopanamax ship carries roughly two to three times the containers of a Panamax one, around 13,000 to 14,000 boxes against about 5,000. That expansion let the canal keep pace with the much larger container ships that had already become standard on other major trade lanes, and it remains the largest change to the canal's capacity since it opened in 1914.

The 2023 to 2024 drought and the return to normal

The canal depends on rainfall to refill Gatun and Alajuela lakes, and a severe El Nino driven drought through 2023 pushed water levels close to historic lows. The Panama Canal Authority, known as the ACP, responded by capping daily transits, cutting them from a normal 36 to 38 ships a day in mid 2023 down to 22 a day by late 2023, and by restricting the maximum draft ships could carry. A further cut to 18 transits a day was announced for February 2024, then cancelled when better than forecast rainfall let the ACP raise the cap back to 24 instead. The 2024 rainy season refilled the lakes as El Nino decayed, and by late August 2024 the ACP had restored a 50 foot maximum draft and 36 daily transits. Watershed rainfall then ran about 34 percent below average between May and August 2026 ahead of another projected El Nino, and the ACP cut the daily cap to 34 transits from 3 September 2026 and to 32 from 15 September, a reminder that the canal's capacity is tied as much to weather as to engineering.

Traffic, revenue and who uses it

The Panama Canal Authority reported that the nine months from October 2025 through June 2026 brought in about 4.8 billion dollars in revenue, up 17 percent year on year, on more than 10,700 transits and nearly 390 million tons measured in the canal's own PC or UMS tonnage system, both up strongly from the drought affected prior year. The United States is by far the canal's largest user by cargo tonnage, followed by China, Japan, South Korea and Chile, reflecting the route's role moving container goods, grain, liquefied natural gas and vehicles between Asia and the US East Coast.

The 2025 to 2026 ports dispute

The canal itself is run by the Panamanian government through the ACP, but the ports at either end, Balboa on the Pacific side and Cristobal on the Atlantic side, have long been operated separately under concession by CK Hutchison, a Hong Kong based company. In March 2025, BlackRock led a consortium that agreed to buy those port operations for about 22.8 billion dollars, a deal that stalled for months amid scrutiny from Chinese regulators and a competing push from China's state shipping group Cosco for a stake in the same ports. On 30 January 2026, Panama's Supreme Court ruled the underlying concession unconstitutional, and on 23 February 2026 the government took the terminals over, placing Balboa under Maersk's APM Terminals and Cristobal under MSC's Terminal Investment Limited while new concessions are tendered. The dispute is about who runs the port terminals next to the canal, not about who runs the canal or its locks, which stay under Panamanian government control regardless of the outcome.

Quick facts

Metric	Figure
Gatun Lake elevation above sea level	About 26 meters (85 feet)
Original locks opened	1914
Expanded Neopanamax locks opened	June 2016
Lock chambers, ocean to lake or back	3
Revenue, October 2025 to June 2026	About 4.8 billion dollars, up 17 percent
Transits, October 2025 to June 2026	More than 10,700
Daily transit cap during the 2023/24 drought low	22 ships a day, against 36 to 38 normally
Top user by cargo tonnage	United States

Common questions

Why is the Panama Canal not level, unlike the Suez Canal?

The land at the Panama isthmus rises well above sea level, so a flat cut like the Suez Canal was not practical. Instead the canal lifts ships through locks to Gatun Lake, about 26 meters above sea level, then lowers them back down on the other side, using gravity fed water rather than a continuous sea level channel.

How do the Panama Canal locks work?

Each lock is a walled chamber with gates at both ends. A ship enters, a gate closes behind it, and gravity fed water raises or lowers the chamber to match the next level. When the levels match, the far gate opens and the ship moves on. No pumps are needed; water simply flows downhill between chambers.

Why was the Panama Canal restricted in 2023 and 2024?

A severe drought driven by El Nino cut rainfall across the canal's watershed, dropping Gatun Lake to unusually low levels. The Panama Canal Authority responded by capping daily transits, at points to 22 ships a day, and limiting how deep ships could load. A deeper cut to 18 a day was announced for February 2024 and then cancelled. The 2024 rainy season allowed most restrictions to lift by that August.

Who uses the Panama Canal the most?

The United States is the canal's largest user measured by cargo tonnage, moving container goods, grain, and liquefied natural gas between its coasts and Asia. China, Japan, South Korea and Chile round out the next largest users.

Does the Panama Canal use Neopanamax locks?

Yes, since June 2016 a second, wider set of locks lets Neopanamax ships, which carry roughly two to three times the containers of the older Panamax limit, transit alongside the original 1914 locks, which still handle smaller vessels.

Why is the Panama Canal important?