Last Saturday (May 21st) Aisling and I took a drive over to Forsyth to see the "flooding". I posted some pictures of it the other day. The above picture is one I took from the north side of the Yellowstone looking over at the west boatdock. At the time, the water was just encroaching on the parking area above the boatdock, (it's in about the center of the picture).
Below is an arial picture that was posted on the Rosebud County Search and Rescue Facebook page of basically the same area only 2 days later.