Another tidal energy generator uses a type of dam called a barrage (2). A barrage is a low dam where water can spill over the top or through turbines in the dam. Barrages can be constructed across tidal rivers and estuaries. Turbines inside the barrage can harness the power of tides the same way a dam can harness the power of a river. Barrages are more complex designs than single turbines.

Tides - Moon: NASA Science Tides - Moon: NASA Science

To keep with the ocean aesthetic (and because this is just what I envision when I think of the book as a whole), I have the image of waves.

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i just need to remember how it feels to be proud of you, to look in the mirror and be in awe of you. One thing to note, however, is that this is just an explanation of the tidal force—not the actual tides. In real life, the Earth isn't a global ocean, covered in an even layer of water. There are seven continents, and that land gets in the way. The continents prevent the water from perfectly following the moon's pull. That's why in some places, the difference between high and low tide isn't very big, and in other places, the difference is drastic. That explains the first high tide each day, but what about the second high tide?

Changing with the Tides by Shelby Leigh | Goodreads Changing with the Tides by Shelby Leigh | Goodreads

There are two main tides that are higher or lower than average. They occur twice monthly and are called neap and spring tides. Neap tidesTides produce some interesting features in the ocean. Tides are also associated with features that have nothing to do with them. The Moon’s gravitational pull on Earth, combined with other, tangential forces, causes Earth’s water to be redistributed, ultimately creating bulges of water on the side closest to the Moon and the side farthest from the Moon. These two bulges explain why in one day there are two high tides and two low tides, as the Earth's surface rotates through each of the bulges once a day. Does anything else affect tides? Rather, people are causing these changing tides. Dredging river channels like the Ems or filling in coastal wetlands can trigger shifts. The nature of those shifts is complicated: In some locations the tidal range grows more dramatic, whereas in others it shrinks. Either way, the shifting tides have big implications for hundreds of millions of coastal residents. In 2016, Talke and his colleagues analysed how storm surge might change in the Cape Fear River estuary along with the changing tides. They calculated that dredging of the ship channel has effectively worsened the potential damage posed by a Category 5 hurricane and raised the highest possible water levels in Wilmington by 1.8m (5.9ft).

Changing with the Tides by Shelby Leigh | Waterstones

The tidal range along the Thames River has quadrupled since the time of the Romans, as engineers narrowed and deepened the river for navigation. Those tides rhythmically submerged and revealed the Rising Tide sculpture, underwater artist Jason deCaires Taylor’s 2015 installation at Vauxhall in London. Changing tides affect coastal residents in many ways. Someone who wants to sail a tall ship under a short bridge has to wait for just the right tidal conditions. Someone who wants to build a riverfront home in an estuary has to know exactly where the high-tide mark is. Someone designing a tidal-energy system needs to know how much energy they can extract from the water flows. And that’s where the study of changing tides can help people prepare for a changing world, Talke says.Twice a month, when the sun, the moon and Earth are nearly in alignment, Earth experiences “spring” tides. During these periods high tides are a little higher than usual and low tides are a little lower than usual. Seven days after spring tides, when the sun and the moon are at right angles to each other, their gravitational tugs partly cancel each other out, resulting in moderate “neap” tides.