Key Bridge, Potomac River, boat houses, part of Georgetown University, and a pier for a former canal boat aqueduct, on the left.
The wind was from the right. When the wind is creating waves, the leading surfaces of the waves may be steeper than the trailing surfaces, perhaps causing the curved reflections of lights on the water.
The original-size image shows ripples from the rain on the surface of the river.
Photo taken after the "blue hour," so city lights predominate. I changed from the default white balance, making this image slightly less reddish than the actual scene.
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