Seventeen Feet Higher: How Galveston Raised Itself After the Deadliest Storm in U.S. History

At about five o’clock on the morning of Saturday, September 8, 1900, Joseph Cline woke his older brother with news from the beach. The tide was already up in the low parts of Galveston, Texas, even though the wind was blowing off the land. Isaac Cline, who ran the U.S. Weather Bureau office on the island, drove his horse cart down to the Gulf and timed the waves rolling in. Then he wired Washington: “Unusually heavy swells from the southeast, intervals of one to five minutes, overflowing low places south portion of city three to four blocks from beach. Such high water with opposing winds never observed previously.”

By the next morning, somewhere between 6,000 and 12,000 people were dead. The figure most often quoted is 8,000, about one person in five on the island. The Galveston hurricane of 1900 is still the deadliest natural disaster in American history, and no hurricane to strike the United States since has come close to its toll.

What happened next is less famous, and it is one of the boldest pieces of civil engineering any American city has tried. Galveston built a concrete wall along the Gulf more than three miles long and 17 feet high. Then it jacked up more than 2,000 buildings, cut a canal through its own neighborhoods, and pumped sand from the harbor underneath until parts of the city stood as much as 17 feet higher than before. Fifteen years later, a storm just as strong put the work to the test.

A rich city on a sandbar

In 1900 Galveston was one of the wealthiest cities in the country for its size. Nearly 38,000 people lived on the east end of a barrier island about 30 miles long and less than three miles wide. Cotton and grain poured through its port, the busiest in Texas, and the banks and trading houses along the Strand earned it the nickname “the Wall Street of the Southwest.”

The city’s weakness was its height. The highest point in Galveston was 8.7 feet above sea level, and most of it was much lower. Residents were used to “overflows,” when a strong blow pushed the Gulf into the streets, and many houses already stood on short piers. A storm in 1875 had nearly erased the Texas port of Indianola, farther down the Texas coast, and a second one in 1886 finished it off. Some Galvestonians took the hint and called for a seawall. The city decided it wasn’t needed. Builders even cut down sand dunes along the beach to fill low spots in town, removing what little natural barrier the island had.

Isaac Cline helped settle that argument. In an 1891 article in the Galveston Daily News, the city’s new weatherman argued that a hurricane doing serious damage to the city was all but impossible, and the seawall idea faded. In his book Isaac’s Storm, the writer Erik Larson quotes Cline dismissing the fear as “an absurd delusion.”

A forecast that went the wrong way

The storm itself had been tracked for more than a week. It crossed the Caribbean as a weak tropical storm, landed on Cuba on September 3, and drifted slowly along the island’s southern coast. Ships at sea had no way to radio what they saw, so forecasters mostly learned where a hurricane was when it hit somewhere with a telegraph office.

The best hurricane forecasters in the region at the time were in Havana, at the Jesuit observatory of the Colegio de Belén, where the observatory’s director, Father Gangoite, watched the sky turn deep red and the clouds stream north. The Cubans believed the storm would keep heading west across the Gulf. One of them predicted it would come ashore in Texas. But after the Spanish-American War, Weather Bureau chief Willis Moore had blocked telegraph reports from the Cuban observatory, and his forecasters in Washington were sure the storm would curve north over Florida and up the Atlantic coast. On September 5 and 6 they posted hurricane warnings from Cedar Key, Florida, to Savannah, Georgia.

Instead, a ridge of high pressure steered the storm into the warm open Gulf, where it grew into what forecasters now classify as a Category 4 hurricane, with winds of about 145 miles per hour. On September 6 the steamer Louisiana ran into it and its captain estimated 100 mile-per-hour winds. Washington finally hoisted storm warnings for the Texas coast on September 7, but Moore still insisted the system was not a full hurricane.

The weatherman’s long day

Cline’s own account, published in the Weather Bureau’s Monthly Weather Review a few weeks later, reads like a log of a barometer in free fall. The classic warning signs he had been trained to look for, such as a “brick-dust sky,” never appeared. What he saw instead was a heavy swell running in against the wind, and a tide that kept rising.

By noon the barometer had fallen to 29.42 inches. Over the next eight and a half hours it dropped almost a full inch more, to 28.48, which Cline called “a fall of pressure of about one inch in eight and one-half hours.” Observer John Blagden stayed in the office reading the mercury barometer every few minutes and recorded 28.53 inches at 8:10 p.m. At 6:15 p.m. the anemometer on the roof logged 84 miles per hour over five minutes, with two minutes at 100 miles per hour. Then it blew away. Cline later estimated the wind reached at least 120 miles per hour.

Cline wrote that the office warned the public all day by telephone and in person that “the worst was yet to come,” and that thousands of people who lived near the beach moved into the center of town and were saved. Around noon he issued a hurricane warning without waiting for permission from Washington. He and his brother later described riding along the beach urging people to leave, though Larson and others note that no survivors are known to have backed up that story. Either way, few people left the island before the bridges to the mainland went under.

Four feet in four seconds

The water did most of the killing. A hurricane’s storm surge comes mostly from its wind, which piles seawater up against the coast. Off Galveston the seafloor is shallow and slopes gently for miles, which makes things worse: the water piled up by the wind has nowhere to go but up and over the land. The storm’s low pressure added a little more: the sea rises about a centimeter for every hectopascal the air pressure falls, which at the storm’s estimated central pressure of 936 hectopascals adds up to about two and a half feet. The surge peaked at more than 15 feet, enough to cover the entire island.

Cline had gone home in the afternoon to a sturdy house near the beach, and by evening some 50 neighbors had crowded into it. At about 7:30 p.m. he was standing at his front door when, he wrote, there was “a sudden rise of about four feet in as many seconds.” The water inside the house went from about eight inches deep to above his waist before he could move. An hour later, wreckage from other houses was battering his walls. At 8:30 p.m. the house went down. Of the roughly 50 people inside, only 18 survived. Cline’s wife, Cora, was killed. He came to clinging to his youngest daughter, and Joseph found them minutes later with the two older girls. They drifted on the wreckage for three hours, shielding themselves from flying timbers with planks, and came ashore about 300 yards from where they started.

All over the city, the same thing was happening. The surge lifted houses off their foundations and drove them into the next row, which collapsed into the row after that. Slate shingles and bricks flew through the dark. At St. Mary’s Orphans Asylum near the beach, ten Sisters of Charity of the Incarnate Word moved more than 90 children into the newest building and had them sing the hymn “Queen of the Waves” to calm them. As the walls began to go, the sisters tied themselves to groups of children with clothesline. None of the sisters survived, and only three of the children did.

The morning after

Sunday, September 9, 1900, revealed what Cline called “one of the most horrible sights that ever a civilized people looked upon.” About 3,600 homes had been destroyed outright, and every building on the island was damaged. A ridge of wreckage about three miles long ran across the middle of the city, marking where the surge had dropped what it carried. Around 10,000 people were homeless. The bridges and telegraph lines were gone, and the first messengers had to sail across the bay and make their way to Houston to send word to the governor and President McKinley: “the city of Galveston is in ruins.”

There were too many dead to bury. Crews loaded about 700 bodies onto a barge and dumped them at sea, but the currents carried many back to the beach. After that, the dead were burned on pyres that smoldered for weeks. Some of the men made to load the bodies were Black residents forced into the work at gunpoint. Clara Barton, then 78, came with a Red Cross team for what would be her last disaster relief mission, and money poured in from across the country and overseas.

The storm also changed how Galveston was governed. Business leaders, convinced the old city council could not manage a rebuilding on this scale, replaced it with a small commission in which each member ran one department: finance, police and fire, water and sewers, or streets and public works. It was the first commission government in the country, and by 1920 about 500 American cities had copied some version of the “Galveston plan.”

A wall, and a man who wrote the rules

To keep the Gulf out, the city hired three engineers: Alfred Noble, soon to be president of the American Society of Civil Engineers; Henry Clay Ripley; and, as chairman, Henry Martyn Robert, a retired brigadier general who had just finished his Army career as chief of the Corps of Engineers. Robert was better known for a book. In 1876, after a church meeting he was chairing fell into chaos, he had published a short guide to running meetings that became Robert’s Rules of Order.

The board delivered its report on January 25, 1902. It called for a concrete wall more than three miles long, rising 17 feet above mean low tide, and for the land behind it to be raised so the city would slope gently down toward the bay. That November, local voters approved bonds for the wall by 3,085 votes to 21.

J.M. O’Rourke and Company of Denver started work in September 1902. The finished wall was a curved slab of concrete 16 feet thick at its base and 5 feet thick at the top, weighing about 40,000 pounds for every foot of its length. It sat on timber piles, with sheet piling to keep the sea from undermining it, and a 27-foot apron of granite blocks at its foot to break the waves. The curve on its face was meant to deflect breaking waves upward and back out to sea instead of taking their full blow. Building the first section took 5,200 railroad cars of crushed granite, 4,000 cars of wooden sheet piling, 3,700 cars of stone riprap and 1,000 cars of cement. That section, 17,593 feet long, was finished on July 29, 1904. Over the next six decades the wall was extended to more than 10 miles.

Bridges and buildings tend to teach engineers the most when they fail, as the collapse of the Tacoma Narrows Bridge did in 1940. Galveston’s wall was the opposite case: a design built from the memory of a disaster that had already happened, sized to the water marks of 1900.

Lifting a city off the ground

A wall alone would leave the city behind it as a bowl that could fill with rainwater or with a surge that came over the top or around through the bay. So the second half of the plan was to raise the city itself. Galveston was not the first to try this. Half a century earlier Chicago had jacked its buildings out of the mud to make room for sewers. But no city had tried to lift so much ground so high.

The contractors, Goedhart and Bates of New York, came up with the method. In July 1904 dredges began cutting a canal through the heart of town, between two and a half and three miles long, 20 feet deep and 200 feet wide, running behind the new seawall, with two turning basins. Houses in its path were moved aside. Then four hopper dredges built in Germany, named Holm, Leviathan, Triton and Nereus, went to work. Each one sucked a load of sand and water off the bottom near the harbor entrance, steamed up the canal into the middle of the city, tied up at a discharge station and pumped its slurry through pipelines into the neighborhood being filled.

The city was raised one section at a time. Crews built a low dike around a section about a quarter mile square. Everything inside had to come up first: houses, churches, schools, streetcar tracks, fire hydrants and water pipes. More than 2,100 buildings were lifted on hand-turned jackscrews, mostly at their owners’ expense, and propped up on temporary posts while the slurry was pumped in underneath. As the water drained away, the sand stayed behind, and the pumping went on until the fill reached the new grade. Then owners built new foundations on top of it.

For years, much of Galveston lived above a swamp of wet sand. People walked to work and school on wooden boardwalks laid along the tops of fences. Gardens and trees were buried unless their owners dug them up first. In all, about 500 city blocks were raised, using about 16.3 million cubic yards of sand. Near the seawall the ground came up as much as 17 feet, tapering down toward the bay. When the work was done, the canal was dammed off and filled in, and the moved houses were set back on their lots.

The heaviest single lift was St. Patrick’s Church, the same church the storm had gutted. Workers from a Chicago company raised the 3,000-ton building five feet with 700 jackscrews, turning them half an inch at a time. It took a crew of about 100 men 35 days, and services went on as usual the whole time. The main grade raising was finished in 1911, though the last section was not filled until 1928.

The test of 1915

The work was put to the test on August 16 and 17, 1915. A hurricane about as strong as the one in 1900 came ashore at San Luis Pass, about 26 miles southwest of the city, with winds of about 130 miles per hour. High-water marks at 20th Street and the Strand showed the water had reached about 12 feet above mean low tide. Waves tore 20-ton granite blocks off the apron and threw them into the streets. A four-masted schooner was smashed against the wall. The beach in front of the wall was scoured away, and the sand behind it washed out in places, undermining about 200 homes.

But the wall held, and the city behind it mostly did too. Warnings went out days ahead, and about 4,000 Galvestonians rode trains and the interurban to Houston before the storm hit. Eleven people died in the city of Galveston and 53 on the whole island, compared with thousands in 1900. Outside the wall’s protection, at least 90 percent of the homes on the island were destroyed, and 275 people died along the Texas coast. It was the clearest possible demonstration of what the wall was worth.

It came with a cost. A seawall stops waves from reaching the land, but it also stops the beach from replenishing itself. Within 20 years the city had lost about 100 yards of sand in front of the wall, and the wide resort beach that drew visitors before 1900 shrank to a strip at low tide. Galveston never regained its place as the leading port in Texas either. Oil was struck at Spindletop, near Beaumont, in January 1901, and the Houston Ship Channel opened in 1914, giving Houston a safer harbor 50 miles inland.

Ike and the back door

The seawall has faced many storms since, including Hurricane Carla in 1961 and Alicia in 1983, after which the Army Corps of Engineers estimated that the wall had prevented about $100 million in damage. Its hardest modern test came on September 13, 2008, when Hurricane Ike made landfall on the northeast end of Galveston Island as a Category 2 storm with winds of 110 miles per hour.

Ike was enormous rather than intense, and it pushed a surge of 15 to 20 feet onto the Bolivar Peninsula across the harbor entrance, razing almost every building in some communities there. On Galveston Island the surge ran 10 to 15 feet. Waves overtopped the seawall, but according to the National Hurricane Center, the wall spared much of the city from a direct blow by the Gulf. The city flooded anyway, from behind. The water rose up out of Galveston Bay on the north side of the island, which the 1900-era plan had never walled off, and the deepest flooding, at least 10 feet, was on the bay side. Ike killed dozens of people in Texas, and preliminary estimates put the damage in Galveston at up to $2 billion.

Ike gave its name to the next great plan. William Merrell, an oceanographer at Texas A&M University at Galveston, proposed the “Ike Dike,” a barrier along the coast with gates across the entrance to the bay. Congress authorized a version of it as part of the $34.4 billion Coastal Texas Project in 2022. Its centerpiece, the Galveston Bay Barrier System, would include a two-mile line of gates across Bolivar Roads, rising 82 feet, with new dunes, seawall improvements and a ring barrier around the city. In February 2026, Houston Public Media reported that the Corps now expects the full project to cost about $57 billion with inflation, and that it could take at least 20 years to complete. Engineering firms began design work this year, and the state has given the local protection district $950 million, most of it for a separate levee system in Orange County, near the Louisiana line. For now, the gate exists only on paper.

The 2026 Atlantic season has been a quiet one so far, largely because a record El Niño is tearing developing storms apart with strong wind shear. Quiet years are when spending billions on a storm gate is hardest to justify. But weather has a way of rearranging history in a hurry, as New England learned during the Year Without a Summer, and Galveston learned in a single night in 1900.

What the storm left behind

Isaac Cline moved to New Orleans in 1901 to run the Weather Bureau’s new forecast center for the Gulf Coast, where he built a reputation for flood warnings, including during the Great Mississippi Flood of 1927. He published a book, Tropical Cyclones, the same year, and the National Weather Service’s highest honor, the Isaac M. Cline Award, carries his name. He lived until 1955, long enough to see the seawall he once thought unnecessary save his old city more than once.

The wall itself is now a promenade. Seawall Boulevard runs along its top, and the sidewalk beside it, more than 10 miles long, is often called the longest continuous sidewalk in the world. The seawall and the grade raising were named a National Historic Civil Engineering Landmark in 2001. Many of the people walking along it are standing on sand that was pumped there by dredges more than a century ago, in a city that decided it would rather lift itself up than leave.

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