Rhode Island’s Narragansett Bay sits like an open mouth, ready to swallow any hurricane that makes its way up the East Coast. Usually these northward trending hurricanes lose steam when they reach the colder waters off New England. Usually but not always. The Great New England Hurricane of 1938 arrived over Rhode Island with a forward speed of 50 to 60 mph and wind speeds exceeding 120 mph. It carried with it an ocean swell that filled the bay to overflowing.
According to the National Weather Service (NWS-Boston), “The hurricane produced storm tides of 14 to 18 feet across most of the Connecticut coast, with 18 to 25 foot tides from New London east to Cape Cod. The destructive power of the storm surge was felt throughout the coastal community. Narragansett Bay took the worst hit, where a storm surge of 12 to 15 feet destroyed most coastal homes, marinas and yacht clubs. Downtown Providence, Rhode Island was submerged under a storm tide of nearly 20 feet.”
In 1954, Hurricane Carol produced a storm surge of more than 14 feet in Narragansett Bay. Downtown Providence was once again flooded, this time by 8 to 12 feet of water. All levels of government — local, State, and Federal — agreed that something had to be done to protect the low lying city center. The Fox Point Hurricane Barrier, completed in 1966, was the result.
All travellers on the I-195 Highway pass within feet of the Barrier as they drive across the eight-lane bridge over the Providence River. But those who want to look at the barrier and appreciate its design, leave the highway on the east side of the river, and make their way back to Bridge Street and its small riverside park (marked in yellow on the satellite view below)
The barrier is located a couple of hundred yards up stream from Fox Point, and just north of the I-195 Highway Bridge. It consists of a concrete wall built across the Providence River and earthen dikes that extend flood protection about a thousand feet over the land on each side of the river. Built into the river wall are three, 40 foot wide gates, each weighing 53 tons. Under normal weather conditions, the gates remain open so as not to impede the flow of the river. The gates are located at the eastern end of the river wall. They can be seen in the satellite view above.
An essential component of the barrier system is the pumping station consisting of five massive 4500 H.P pumps, each as big as a grain elevator. When the flood gates are closed to keep a storm surge out, the entire flow of the river must be continuously pumped up and over the barrier. Otherwise the river would be held back, overflow its banks, and flood the city. The pumping station is housed in a building at the western end of the river wall (its roof is plainly visible in the satellite view). The five pumps, operating together, can lift 3.1 million gallons per minute and discharge the flow to the downstream side of the barrier.
The barrier gates have been closed against storms several times since going into service in 1966. During Hurricane Sandy in 2012, the water crested at 9.5 feet. But the barrier has yet to experience a direct hit from a category 4 or 5 hurricane. As coastal flooding increases in the coming years, hurricane barriers of all kinds are going to be in the news.
Good job! You certainly covered all important points with this post. I want to read more by you. Do you write for any other blogs?
No. ‘Climate Crossing’ is my own blog, and I am it’s only writer. I’m glad you found the post interesting thank for you comments. JC