Summer Afternoon on a Lake Jean-Léon Gérôme (1824-1904)

The picture has something of this: tree, water, river, landscape, lake, reflection, wood, recreation, outdoors, people, dawn, riverbank, daylight, cropland, pool, environment, scenic, fog.
Perhaps it’s a painting of a woman in a white dress standing next to a tree near a body of water with ducks in the water.