Yes, indeed. "Flatford Mill (Scene on a Navigable River)" painted 1816-17.
https://en.wikipedia.org/wiki/Flatford_Mill_(Scene_on_a_Navigable_River)
We're planning to visit the area in a few days from now as part of our family vacation, which is why I thought of it.
The river is the
River Stour, as in this hidden clue, which I believe in this case is actually correctly pronounced like the "tour" in "tourist". (There are other rivers with the same name "Stour" but pronounced differently).
The more famous picture painted in the same area but looking in a different direction is
The Hay Wain:
https://en.wikipedia.org/wiki/The_Hay_Wain
The river is considered the boundary between the counties of Suffolk and Essex, so one bank is in each county, but the Hay Wain is in the river, so it's not clear what county it is in.