The ship channel, explained

The thing the bridge crosses, the ferry crosses, the plants sit on, and the tankers use. Fifty miles of dredged water from the Gulf to Houston, and Baytown is where it gets interesting.

What it is. The Houston Ship Channel is the dredged route from Galveston Bay up the San Jacinto River and Buffalo Bayou to the Port of Houston — one of the busiest ports in the country by tonnage, and the reason a city fifty miles inland is a seaport. It was dug in the 1910s, deepened every generation since, and it's why the Baytown Tunnel had to go: the channel needed to be deeper than the tunnel was.

What you're looking at. From the ferry or the bridge: tankers and chemical carriers, tugs pushing barges, the pilot boats, the occasional cruise ship heading for its terminal. The ships are going to and from the refineries and chemical plants that line both banks — Baytown's on the east side, Pasadena, Deer Park and Channelview on the west — and the terminals at the port. A big tanker at the Fred Hartman's 175 feet of clearance looks like it's going to hit it. It isn't; the bridge was built for exactly that.

Why the ferry still runs. Because the channel is wide and the bridge is far, and because a ferry has crossed at Lynchburg since the 1820s and Harris County kept it going as a public service. It's free, it's the only surface crossing between the bridge and the Beltway, and when the bridge closes for wind it's the whole east side's way south.

The Port and the plants. The port itself is upstream; what Baytown has is the industrial bank — ExxonMobil's docks, the chemical plants' terminals, Cedar Bayou's — and the ship traffic that serves them. When a turnaround is on, the ship count at the Baytown docks drops; when the units come back, it climbs. The crews notice; nobody else does.

What it means for you. Nothing to do with the channel is for swimming or small boats; the fishing guide covers where you can fish from the bank. The channel is why the bridge is high, the ferry is free, the plants are where they are, and the town exists. It's also, from the Hyatt terrace at dusk, a working river with lights on it, and worth watching for an hour.

Questions people ask. Can you see the ships from town? From the ferry, the bridge, the Hyatt terrace, the Nature Center's west end, and Bayland. How deep is it? Deep enough for the biggest tankers that call at Houston; the Port publishes the number and it changes with each deepening. Is it the same as the bay? No — the channel is the dredged lane through the bay and up the river; the bays around Baytown are the shallow water on either side.

En español. El Canal de Navegación de Houston es la ruta dragada desde la bahía de Galveston hasta el Puerto de Houston, uno de los puertos más activos del país. Baytown está en su orilla este: la refinería y las plantas químicas con sus muelles, los buques petroleros pasando bajo el puente Fred Hartman (175 pies de altura) y frente al ferry de Lynchburg, que sigue siendo gratuito y es el único cruce entre el puente y el Beltway. No es para nadar ni para lanchas pequeñas.