How Many Locks Are in the Panama Canal

The Panama Canal has three lock systems: Gatun on the Atlantic side, and Pedro Miguel and Miraflores on the Pacific side, working together to lift ships roughly 85 feet above sea level and then lower them back down on the other end. That is the short answer to how many locks are in the Panama Canal, and I think it is also the fact that makes the rest of a canal-curious trip click into place, because those same three systems are what create Gatun Lake, the stretch of water that most Monkey Island boat tours actually cross.

I would not treat the lock count as a trivia answer and move on. Once you know there are three systems rather than one giant lock, the geography of the whole canal, and why Monkey Island sits inside it rather than near it, starts to make a lot more sense.

What do the three lock systems actually do?

Each system raises or lowers a ship using a set of chambers filled and drained with gravity-fed water, no pumps involved. Gatun Locks lifts ships from the Atlantic up to Gatun Lake in three steps. On the Pacific side, Pedro Miguel Locks drops ships one step into Miraflores Lake, and Miraflores Locks finishes the job with two more steps down to sea level. I find it worth remembering that the whole system runs on water flowing downhill from the lake, not on machinery pushing ships up and down.

Why does the canal need locks at all instead of a flat channel?

Panama’s terrain rises well above sea level at the continental divide, so a sea-level channel the whole way across would have meant digging dramatically deeper and wider than the canal’s original builders could manage with early-1900s equipment. Locks solved that by raising ships onto an elevated lake instead of cutting through the high ground directly. My honest take is that this was the more realistic call for the era, even though it meant building three separate lock systems rather than one simpler cut.

How many individual lock chambers are there, not just systems?

Across the three original systems there are six individual lock chambers in total: three at Gatun, one at Pedro Miguel and two at Miraflores. A newer, wider set of locks opened in 2016 for bigger ships, but those run as a separate parallel system rather than replacing the original three. I’d keep the two sets mentally separate, since most of what a Monkey Island boat tour passes near is the older, original route.

Which lock is easiest for visitors to actually see?

Miraflores, without much competition. It has a dedicated visitor center with a viewing deck, a small museum on the canal’s construction, and regularly scheduled ship transits you can watch in person. Pedro Miguel and Gatun are both visible from the road or water in parts, but neither has the same built-for-visitors setup. If seeing an actual lock transit matters to you, I would build that into your day specifically rather than assuming any canal-adjacent tour covers it by default. The Monkey Island and Miraflores Locks tour bundles the visitor center entrance into a single half-day outing, which I think is the simplest way to get both halves of the canal story without planning two separate trips.

How does Gatun Lake fit between the locks?

Gatun Lake sits between Gatun Locks and the Pacific-side locks, and it is by far the largest piece of the whole crossing, a man-made reservoir created in 1913 by damming the Chagres River. Ships spend more of their transit time on this open lake than inside any single lock chamber. I think this is the part most first-time visitors miss: a huge share of a canal transit, and the whole of a Monkey Island boat trip, happens on open water rather than inside a lock structure at all.

Do the locks still use their original 1914 machinery?

Mostly, yes, at the three original systems. The lock gates, the electric towing locomotives that guide ships through the chambers, and the gravity-fed water system are all variations on the design the canal opened with in 1914, kept running through continuous maintenance rather than a full rebuild. I find that genuinely impressive from an engineering standpoint, and it is part of why the Miraflores Locks visitor experience holds up as more than a quick photo stop.

How long does it take a ship to pass through all three systems?

A full transit typically runs 8 to 10 hours door to door, counting the time spent crossing Gatun Lake between the lock systems. That is far longer than any Monkey Island tour itinerary, which is one reason the two are separate bookings in most cases rather than one combined ship-watching day. I would not expect to see a single ship move through all three systems during one short visit; what you are more likely to catch is one stage of a much longer transit already underway.

Can you see the locks on a Monkey Island tour?

Not automatically, and I think this is worth being direct about before you book. The standard boat tours and the safari-truck combo cross Gatun Lake’s open water but do not stop at Gatun, Pedro Miguel or Miraflores. If you want both the locks and the wildlife, pick a tour that names a visitor center stop specifically, like the Miraflores combo above, rather than assuming the word “canal” in a tour title guarantees a lock visit.

What’s the difference between Gatun, Pedro Miguel and Miraflores?

Gatun is the three-step system on the Atlantic side and the one that raises ships straight up into Gatun Lake, closest to where Monkey Island itself sits. Pedro Miguel is a single-step system in the middle, and Miraflores is the two-step Pacific-side system with the visitor-friendly setup. I’d say Gatun is the one that matters most for a wildlife-focused trip, since it is the system tied directly to the lake your boat will actually be crossing, while Miraflores is the one that matters most if locks themselves are the draw.

How does the lock count affect how a canal tour is priced?

It does not directly, but it shapes which tours cost more. Tours that add a dedicated lock visit, like the Miraflores combo, tend to list higher prices than plain Gatun Lake crossings, since the visitor center entrance fee and extra driving time both add to the bill. I would decide first whether you actually want a lock stop before paying the premium for one, since the core wildlife sighting is the same across every option.

Is one of the three lock systems more scenic for a casual visitor?

I would still point most people toward Miraflores for scenery and setup, but the view from the water at some of the canal’s best vantage points can be more memorable than a fixed viewing deck, especially if a ship happens to pass close by. It depends on whether you would rather watch from a stable platform with a museum attached or from a moving boat with open water on every side.

What should you read next if the engineering side interests you?

The fuller construction story behind the canal, including why the Chagres River valley was flooded to create Gatun Lake in the first place, fills in the history that explains why three lock systems were the chosen design rather than a single giant one. If timing a visit around an actual transit matters to you, the canal’s crossing schedule and typical visiting hours is the more practical next stop.

My honest recommendation after looking at how the whole system fits together is to treat the lock count as context, not the main event, unless engineering is specifically what draws you to Panama. For most visitors, booking a Panama Monkey Island tour from the city that crosses Gatun Lake gives you a genuine feel for the canal’s scale, lake included, without needing to tour all three lock systems in person to appreciate how the whole thing works.

FAQ

How many locks are in the Panama Canal? There are three lock systems: Gatun, Pedro Miguel and Miraflores, made up of six individual chambers across the original 1914 canal.

Which lock system is closest to Monkey Island? Gatun Locks, since it feeds directly into Gatun Lake, the reservoir where Monkey Island’s forested hilltops sit.

Can I visit all three lock systems on one trip? It is possible but not typical. Most visitors pick one, usually Miraflores for its visitor center, rather than touring all three in a single day.

Do Monkey Island boat tours pass through any of the locks? No, by default. Standard boat tours cross Gatun Lake’s open water but do not transit the lock chambers themselves unless the tour specifically includes a visitor center stop.

Is the lock system still the same one built in 1914? The three original systems still use variations of their original gates and gravity-fed water design, kept running through ongoing maintenance rather than a full replacement.