This image shows a large, oval-shaped reservoir with a dark, smooth, rubberized surface

This image shows a large, oval-shaped reservoir with a dark, smooth, rubberized surface. The reservoir is filled with a large body of water with a green, murky color, bordered by a narrow, white band and dark-grey rings. The water is still, with only minor ripples near the shore. The reservoir is surrounded by a thick, green forested area, including evergreen trees and bushes, with a small grassy area in the middle. There are several white, puffy clouds in the bright blue sky. The image was taken from a high viewpoint looking down at the reservoir, with the shoreline in the foreground and the forest beyond. The location is the Washington Park reservoir at 45.511 latitude and -122.597 longitude in Portland, Oregon, United States.