reflective

And that avoids a reflective wave of the water that's coming in and being stopped, being pushed back downstream.

It'll be, I think, very reflective, very, very good.

And there's also a slightly noticeable but better-than-nothing anti-reflective coating.

Well, there are various ideas for increasing the Earth's surface reflectivity or albido effect, like developing more reflective crops, painting rooftops white, or covering areas with reflective materials.