This is why I still carry a Lumix point-n-shoot camera around in a go-bag whenever I leave home. Working much farther from home than normal today, I stopped to take lunch in a small town where I knew about a man-made waterfall feature next to the intersection of 2 highways. Basically this was a stone quarry decades ago, and the hole in the ground filled with water. A businessman got the bright idea to plumb the rock with a pump to make a waterfall feature. I'm working today and had not expected to make this stop, so no Nikon DSLR with me. But Lumix got worked harder than normal. Finally took it off auto-everything and set to Shutter Priority, took test shot at 1 second and it was blown out white. Had to drop to 1/40s to get an image, so no motion blur. I steadied the camera by resting on top of an iron fence and proceeded to take a lot of photos as still as possible. G'MIC add-on in GIMP will align layers and average them, and this is the result. With some color adjustments. If I had a tripod, I would have composed a lot better. But I got my motion blur at high-noon.
Now I need to return with a DSLR, tripod, neutral density filters at sunrise. When the weather is warm again...