The Salmon Leap at Leixlip with Nymphs Bathing Francis Wheatley (1747-1801)

The picture has something of this: water, tree, outdoors, river, landscape, nature, leaf, scenic, people, daylight, recreation, park, wood, group, rock, fall, lake.
Perhaps it’s a painting of a group of people sitting on rocks next to a body of water with a waterfall in the background and trees in the foreground.