Actually, I didn't stop in Rosslyn (or the lesser Ronald), as neither seemed very impressive, especially not without snow but rather glorious sunshine - seems rather un-Alaska like. (Yes, I know parts of Alaska have no sunset for a couple of months in mid summer.)
But I did find the Cle Elum Reservoir, which was very empty, as is obvious. The dam is on the Cle Elum River which flows east into the Yakima River, and ultimately into the Columbia.
The (almost) empty reservoir. The wall is the dark patch near the middle of the picture, but is more obvious in the following pictures.
The two "objects" near the middle of the image are a couple of cars!
The trusty R11S enjoying a little shade.