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By Associated Press
Published 5 years ago on
February 5, 2020

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DEPOE BAY, Ore. — Tourists, nature lovers and amateur scientists are whipping out their cameras to document the effects of extreme high tides on shorelines from the United States to New Zealand, and by doing so are helping better predict what rising sea levels will mean for coastal communities around the world.

“For us, the king tide offers a look at where the water will be in about 2050, about a foot to a foot and half above normal water levels.” — Skip Stiles, executive director of Wetlands Watch
A network of volunteer photographers fans out around the globe during so-called king tides to capture how high the waterline gets and where the water goes. They then upload the images — many with geolocation data embedded — for use by scientists, policymakers and even city planners as they study and prepare for the effects of climate change. The photos show where flooding occurs on specific roads, or give clues about whether it’s safe to build new housing, for example, near an eroding bluff.
“For us, the king tide offers a look at where the water will be in about 2050, about a foot to a foot and half above normal water levels,” said Skip Stiles, executive director of Wetlands Watch, a nonprofit that helped recruit 700 people to document a king tide in Norfolk, Virginia, for the first time there in 2017.
The group’s efforts have since grown into a smartphone app that uses crowdsourcing to gather images and pinpoint flooding.
“What we’re finding is there’s a real appetite for this data. A lot of the localities here are putting together comprehensive plans for sea level rise, and I’m getting calls from them saying, ‘Do you have data? Do you have photos?’ That’s what we’re going for.”
Photo of high tides rolling into the harbor in Depoe Bay, Ore.
In this Jan. 11, 2020 photo heavy surf surrounds the legs of a bridge as an extreme high tide rolls into the harbor in Depoe Bay, Ore. during a so-called “king tide” that coincided with a big winter storm. Amateur scientists are whipping out their smartphones to document the effects of extreme high tides on shore lines from the United States to New Zealand, and by doing so are helping better predict what rising sea levels due to climate change will mean for coastal communities around the world. (AP Photo/Gillian Flaccus)

King Tides Occur About Twice a Year in Coastal Areas Worldwide

The first of these King Tide Projects involving the public began in 2009 in Australia. The idea has since spread to more than a dozen coastal states in the U.S., British Columbia, New Zealand, Mauritius and beyond.
King tides occur about twice a year in coastal areas worldwide when the sun and moon align to enhance the gravitational pull that produces normal, daily tides. These super-high tides came into sharp focus in January, when one arrived in Oregon on the same day as a major winter storm, creating 15- to 20-foot (4.6- to 6.1-meter) waves and a massive swell that sucked a man and his two young children out to sea. The woman who called 911 had been photographing the tides from her yard for the Oregon King Tides Project. The children, ages 4 and 7, died.
Citizen scientists are preparing to document this winter’s final king tide Feb. 8-10 off the U.S. West Coast, followed by one in New Zealand on Feb. 12.
Flooding from king tides is a preview of how sea level rise will affect coastal communities — and warmer oceans and bigger storms could amplify those changes, said Peter Ruggiero, interim executive director of the Oregon Climate Change Research Institute. Modeling shows Oregon could experience sea level rise of as little as a foot or as great as 6 feet in a worst-case scenario, he said.
Some of these King Tide Projects, like the one in Oregon, are run by nonprofit groups, while others are in partnership with state and local governments. They all have the same goal: to educate the public and provide a clear-eyed assessment of how climate change will affect everyday life, from flooded intersections to cows grazing in knee-high salt water, to popular beaches swallowed by waves.

Some Images Were Used to Develop a Plan to Reinforce a Rapidly Eroding Beach

“A lot of the conversation around climate change was what was happening far away and not about what people were going to be experiencing in their own lives,” said Marina Psaros, who helped develop California’s King Tides Project. “The goal of the project was to get people thinking more about climate change locally instead of just polar bears.”

“A lot of the conversation around climate change was what was happening far away and not about what people were going to be experiencing in their own lives. The goal of the project was to get people thinking more about climate change locally instead of just polar bears.” Marina Psaros, who helped develop California’s King Tides Project
In Georgia, coastal communities constantly struggle with flooding from high tides and storms — a phenomenon dubbed “sunny day flooding” in places across the U.S. South. Chatham County, home to the low-lying city of Savannah, uses dozens of sea level sensors to track tides and collect data for future city planning. It has also begun asking people to snap pictures during flooding.
“The combination of the sensor data and the photos really helps build out the story — and with that, we hope it will solidify funding decisions better,” said Nick Deffley, Savannah’s director of sustainability.
When Auckland, New Zealand, organized its first king tide photo event, people sent in images of flooded parks and freeway underpasses. They shared them with local government, and some of the images were used to develop a plan to reinforce a popular but rapidly eroding beach.
Photo of the harbor in Depoe Bay, Ore.
In this Jan. 11, 2020 photo an extreme high tide rolls in and floods parts of the harbor in Depoe Bay, Ore. during a so-called “king tide” that coincided with a big winter storm. Amateur scientists are whipping out their smartphones to document the effects of extreme high tides on shore lines from the United States to New Zealand, and by doing so are helping better predict what rising sea levels due to climate change will mean for coastal communities around the world. (AP Photo/Gillian Flaccus)

It’s a Conversation That Remains Lively in Places Like Oregon

Last year, they expanded the program to include a series of tide gauges that are checked regularly by citizen scientists, said Ben Sheeran, founder of the New Zealand King Tide Project.
“There’s no eureka moment where it all comes into play, but it’s an evolving database of information that’s there when needed,” he said. “And the data we get are a vehicle for people to continue that conversation.”
It’s a conversation that remains lively in places like Oregon, where king tides mean periodic flooding of large parts of the coast.
Last year, two volunteers took photos of it from an airplane, capturing striking images of swamped farmhouses, flooded freeway on-ramps, and miles and miles of salt water-soaked agricultural land.
“That flight was my first vision of homes with water looking like it was within feet of coming up into the home. And you had pastures and farm animals out there that looked like these little dots on an island,” said Rena Olson, who shot the images along with Alex Derr.
The two hope to go up again this weekend.
“Seeing that over such a large area, it really opened my eyes,” Olson said. “This is impactful.”

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