America’s Working Waterways: Post IX – B - The Gulf — The Export Engine
Getting It Downriver Is Only Part of the Job
In the 1980s ADM bought the Ama export house from Farmers Grain Terminal, ran the St. Charles Grain house in Destrehan with Garnac before taking it over, and added the Louis Dreyfus house at Reserve. Our Gulf management team wasn’t fully staffed yet, so for a couple of years I spent a lot of days in those facilities.
It didn’t take long to figure out what was bigger here: the river, the tows, the boats, the houses, and the risks. Coordinating hundreds of barges being loaded upriver so the right quantity and quality of grain arrived inside a narrow window took careful work among a lot of groups—the country elevators, the export trade desk, the barge lines, the fleeting services, the export house, FGIS, and the vessels.
Getting grain to the Gulf is one job. Getting it on the ship is another. Down here the two have to work together.
Post IX-A followed the Lower Mississippi from Cairo to Baton Rouge and the houses along it that load grain. This post picks up where that one left off. At the Gulf, three schedules have to line up. The barges have to arrive. The export elevator has to unload them, grade the grain, and have the right cargo ready. And the ship has to get in, load, and get back out to sea. If any one of those slips, the other two feel it.
The Gulf Corridor
Mileage is still measured above Head of Passes. Baton Rouge sits at about mile 230 and New Orleans about 95. At Baton Rouge the river becomes a deep-draft ship channel. The U.S. 190 bridge at mile 234 is the farthest point upriver an ocean ship can reach. From there to the Gulf, about 256 miles counting Southwest Pass, barges and ships share the same water.
Fleets line both banks. The Coast Guard runs this stretch as a Regulated Navigation Area from mile 88 up past Baton Rouge, largely because of the fleets.
When grain people say “the Gulf,” they don’t mean one port. The export corridor between Baton Rouge and the Gulf is split among four Louisiana port authorities.
Port authority | River miles (AHP) | Length | Grain export houses in the reach |
Greater Baton Rouge | 168.5 to 253 | 85 miles | Louis Dreyfus at Port Allen |
South Louisiana | 114.9 to 168.5 | 54 miles | Zen-Noh Convent, ADM and Cargill Reserve, ADM and Bunge Destrehan, ADM Ama, CHS Myrtle Grove |
New Orleans | 82 to 115 | 33 miles | Cargill Westwego |
Plaquemines | Below New Orleans to the Gulf | — | Midstream buoy operations |
The Port of South Louisiana holds seven of the state’s nine grain elevators and does the heavy lifting for U.S. grain exports.
Fleeting and Harbor Work
A 35-barge tow doesn’t pull up to an export elevator. It drops its barges in a fleet, and smaller harbor boats do the work from there. Many export elevators have their own fleeting operation right on the bank. Others keep a fleet across the river or use a commercial fleet operator.
When the elevator calls for barges, fleet boats bring them over, usually a couple at a time. That’s where a lot of Gulf delay hides. The barges may be in the fleet, but if they’re the wrong grade, the wrong owner’s grain, buried at the back of the tier, or waiting on a harbor boat, the elevator is still waiting. The question isn’t whether barges are at the Gulf. It’s whether the next barge the elevator needs can be at the unloading berth when the leg is ready for it.
The Export Elevator
This is the part most people never see, and it’s the heart of the whole operation.
A barge is placed into the barge slip. Many houses use double-slip berths so one barge can be unloaded while the next is brought in. The covers come off; nearly all commercial barges now have flip-top fiberglass covers. A marine leg or other unloading system lifts the grain out. A good house can discharge a full barge in about an hour, clean it, and have it ready to pull.
As the grain comes off the barge it’s weighed and sampled. The terminal’s own lab grades it. Federal inspection is not required on inbound barge grain. FGIS comes in when the grain is about to go on the ship.
From there the grain goes into working storage or moves straight from barge to vessel, blended against the house’s inventory to hit the grade on the contract. These houses are master mix-and-blend operations, not long-term storage houses. Shipping bins are the last stop before the ship. Grain is blended into a selected bin, FGIS inspects it while filling, and certifies that it meets contract spec. That lets the house load tight to tolerance.
When the ship is ready the grain goes out over the shipping galleries and down the spouts. The first mate works the preapproved loading plan and calls the weight and placement for each hold.
Three numbers get thrown around for every export house: how fast it unloads barges, how much it stores, and how fast it loads ships. They aren’t the same thing. A house that loads 100,000 bushels an hour still waits if the barges aren’t there, the grade isn’t right, or the ship isn’t at the dock.
The Gulf Export Complex
From the top down the main shore-based grain export elevators are Louis Dreyfus at Port Allen, Zen-Noh at Convent, ADM at Reserve, Cargill at Reserve, ADM and Bunge at Destrehan, ADM at Ama, Cargill at Westwego, and CHS at Myrtle Grove.
Then there are the midstream operations that load ships at buoys straight from barges with floating cranes and little or no storage. Midstream gives the system flexibility but has its own weather limits.
Where a house sits on the river changes how it runs. Ama is on the outside bank of a hard bend, fast current and little deposition. Other houses sit on the inside of a bend and need frequent dredging at their own berth.
Keeping the Door to the Gulf Open
At Head of Passes the river splits three ways. Every grain ship uses Southwest Pass. It wasn’t always that way. By the mid-1800s sandbars had silted the mouth down to as little as 8 feet in places. James Eads took on South Pass between 1875 and 1879, driving pilings and building jetty walls with willow mattresses so the river scoured its own channel. South Pass held 30 feet and New Orleans rose from the ninth biggest port in the country to the second.
Ships kept getting bigger. In the 1900s the Corps built jetties at Southwest Pass on the same idea at a bigger scale, and it became the main channel. Keeping Southwest Pass open is the Corps of Engineers’ job through its New Orleans District, and it never ends. The river carries an enormous sediment load. Where it slows and meets salt water at the mouth, that sediment drops out. The Corps surveys the channel regularly and keeps dredges working 24 hours a day.
The 45, the 47, and the 50
For most of the last 35 years the number that mattered was 45 feet. Southwest Pass was held at 40 feet until 1987, then deepened to 45. The Corps was authorized to keep it at 45 but allowed to overdredge, so in practice the channel usually ran 47 feet or deeper. Ships and charterers planned around about 47 feet of draft, and the pilots set the recommended draft based on what the surveys showed.
Holding it was the hard part. In 2011 the bar pilots cut the recommended draft to 44 feet because the Corps hadn’t kept the pass at project dimensions. In 2012 ships drawing more than 41 feet were told to stay out while dredges caught up. In 2019 the pass spent 205 days under draft restrictions.
Dredging to deepen the channel from 45 to 50 feet started in 2020. In August 2022 the Corps marked the end of the first two phases, and the M/V Capri sailed on August 5 as the first ship to transit at 50 feet of draft. As of late October 2026 the pilots’ recommended maximum loading draft is 50 feet from the sea buoy to mile 180, and 45 feet from mile 180 to Baton Rouge. The final phase, carrying 50 feet all the way to Baton Rouge, is still ahead.
During the droughts since 2022 the deep-draft channel has seen almost no draft restrictions.
Keep three numbers straight: the depth Congress authorized, the depth the surveys show today, and the draft the pilots will take a ship at. The third one is the one that loads the ship.
Salt Water
Low water brings a different problem. When the river drops, salt water pushes up the bottom of the channel toward the drinking water intakes. Since 2022 the Corps has had to build an emergency underwater sill every year. In 2023 the salt wedge reached mile 69.4, the farthest in the modern record.
The Pilots
Loading the ship is one job. Getting it out is another, and on this river that belongs to the pilots. Pilotage is compulsory for foreign-flag ships and for U.S.-flag ships sailing under register in foreign trade. Coastwise U.S. vessels may use a federally licensed pilot instead of the state associations. The river is worked in relay. The Associated Branch Pilots (bar pilots) take ships from the sea buoy through the passes to Pilottown. The Crescent River Port Pilots run Pilottown to New Orleans. The New Orleans–Baton Rouge Steamship Pilots (NOBRA) take ships from New Orleans up to Baton Rouge. A ship loading at an upriver elevator can have three different pilot associations aboard on one trip.
These aren’t towboat pilots. A ship pilot boards a different ship every time. What he brings is the river: the current at each bend, where the shoals are building, and how a deep-loaded ship will behave in it. The bar pilots also set the recommended drafts and daylight-only rules.
The People at the Dock
The ship doesn’t come alongside on its own. It takes assist tugs, line handlers, and terminal crews. The shipping agent books them along with everything else a ship needs while it’s in port.
What Holds Things Up
On the upper rivers most delays come back to water and locks. At the Gulf the list is longer.
Fog is the most common one, especially in winter and spring. When visibility drops, ship movements slow or stop. That backs up both the next ship waiting for the berth and the barges stacking up in the fleet.
Storms and wind stop shiploading and can shut down pilot boarding at the passes.
Cold snaps are rare but cause as much trouble as the fog when they hit.
Hurricanes are the big one. Terminals secure equipment, fleets double up moorings, and ships move out. The recovery is the long part. Hurricane Ida in 2021 damaged Cargill’s Reserve and Westwego houses and knocked out power across the complex. A stretch of river was closed because of downed power lines and sunken vessels.
High water brings strong current, drift, and fast shoaling at the passes. Low water brings shoaling in the crossings, salt water at the mouth, and lighter barges coming down from the north.
Some delays have nothing to do with weather: ships wait for a berth or their cargo, a leg breaks down, the grade isn’t there, inspection or paperwork holds it up.
And then there are the delays nobody plans for. One night some of our Cajun crew found a six-foot gator on the bank. Somebody decided it would be a good idea to turn it loose in the FGIS inspection room. FGIS didn’t see the humor. They shut us down from loading for eight hours. Fog, high water, and hurricanes you can at least see coming. A gator in the inspection room, not so much. But it makes a real point. No inspectors, no certificate, and no certificate, no grain on the ship. Up at Lettsworth the scale sign would have charged $10 to weigh him.
Draft and Delay Are Money
Every foot counts twice at the Gulf. A foot less draft on the inland rivers means lighter barges coming south and higher freight per ton. A foot less draft at Southwest Pass means thousands of tons left off a large bulk carrier. Waiting costs money too. A ship at anchor is on the clock, and demurrage on a large bulk carrier adds up quickly. Whether that time counts against the shipper, the terminal, or the owner depends on the charter.
All of that flows back upriver. The Gulf bid is the export price minus the ocean freight and the elevation. Your river bid is the Gulf bid minus the barge freight. When the barge freight spikes, the passes restrict, or the elevators back up, some of it shows up in the bid at your elevator.
Real Alternatives
The Gulf has competition, but every alternative has its own limits: rail to Gulf houses, the Pacific Northwest, Texas Gulf ports, domestic processors and feeders, or holding it if bin space exists. The Gulf Intracoastal Waterway ties the Mississippi east and west along the coast and gets its own post later. Competition doesn’t make the Gulf less important. It makes reliability more important.
What Needs to Change
Finish the 50 feet. Fifty feet runs to mile 180. The last reach to Baton Rouge is still at 45. Keep the dredges ahead of the river. Plan for the salt wedge, four straight years of emergency sills says this isn’t an emergency anymore. Protect the fleets and harbor services. The handoff from fleet to elevator is where a lot of time is lost. Harden the terminals. Ida showed what one storm can do to power and conveyors across the whole complex. Watch the right numbers: the pilots’ recommended drafts, the Corps’ Southwest Pass surveys, ships waiting at the Gulf, and the barge rate in USDA’s weekly Grain Transportation Report.
Operator’s Scorecard: The Gulf
Measure | The Gulf |
Length | About 256 miles, Baton Rouge to the Gulf, counting about 20 miles of Southwest Pass |
Primary commodities | Corn, soybeans, wheat, and sorghum out for export; fertilizer, steel, and other bulk inbound |
Channel | Deep-draft ship channel, Baton Rouge (mile 234) to the Gulf, shared with barge traffic and fleets |
Ship draft | 50 feet, sea buoy to mile 180; 45 feet, mile 180 to Baton Rouge (pilot recommendations, late October 2026) |
Locks | None |
Barge handling | Line haul tows drop in fleets; harbor boats shift barges to the elevators a couple at a time |
Export elevators | Louis Dreyfus Port Allen, Zen-Noh Convent, ADM and Cargill Reserve, ADM and Bunge Destrehan, ADM Ama, Cargill Westwego, CHS Myrtle Grove, plus midstream buoy operations |
Who keeps it open | Corps of Engineers New Orleans District; Coast Guard; pilots |
Seasonal risk | Winter and spring fog; spring high water and shoaling at the passes; late summer and fall low water and salt water; hurricanes June to November; rare cold snaps |
Modal alternatives | Rail to Gulf houses, PNW, Texas Gulf, domestic processors, storage |
Strategic vulnerability | Southwest Pass as the single deep-draft outlet; hurricanes; fleet-to-elevator handoff |
GG50 Operator Take
The Gulf gets measured by how big the tows are and how fast the shiploaders run. Those numbers matter, but they don’t load a ship on their own. The barges have to be in the fleet, the covers have to come off, the right barges have to get to the leg, the grade has to be there, the pilots have to have the water, and the fog has to lift. The job isn’t done when the grain gets to the Gulf. It’s done when the right cargo is aboard and the ship is past the sea buoy.
What’s your experience been at the Gulf? If you’ve worked an export house, run a fleet, or waited on a ship at anchor, tell me about it in the comments.
Link to Glossary of Terms: https://www.grainguyfifty.com/post/the-gg50-america-s-working-waterway-vocabulary-glossary-of-terms
Next up in the series is the McClellan-Kerr Arkansas River System: Rice, Soybeans, Fertilizer, and 18 Locks
Thank you for reading and for being part of this conversation. Whether you work at an elevator, a processor, a terminal, or simply care about how grain gets from field to market, the fundamentals are worth reviewing. Your feedback helps shape this blog, so please share your experience and perspective.
Regards,
Grain Guy Fifty
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