I believe this is the lodge, Dan further upstream posted photo. Have not seen them, neighbor said two beavers
Maybe a muskrat?
I have never seen Beaver scat before but I am thinking this may be it. There appears to be only fibrous vegetable content in the scat. It is on a walkway which is slightly under water (maybe 1/4 inch?) and it has apparently been in the water for awhile.
After doing a little research, I learned that American Beavers perform coprophagy: the first scat is soft and green and the second is dark brown. There appears to be a long dark scat on the lower right in photo 4 and I am wondering if this is the first scat. Looking at a lot of American Beaver scat photos on the web, I am quite confident this is American Beaver poop.
This tree is about 15 to 20 feet from this tree which was felled last year. https://www.inaturalist.org/observations/192105953
The area where this tree is located is now more difficult to get to because of the beavers continued dam building. Areas which were previously dry now have a couple of inches of standing water. However, a week or so ago I was walking west of South Creek when I first heard, then saw, this tree toppling. There was no breeze so, given the location, I strongly suspected the Beaver was busy and went back to investigate.
The Fremont Cottonwood tree is here https://www.inaturalist.org/observations/208150885
This beaver was with another and at its beaver den.
Recent feeding sign on Salix sp.
Hunter Camera
With kit
This Beaver pond is just above a low water bridge on Orchard Creek and is an ongoing battle because the beaver plug the culvert under the low water pathway flooding the path and the city then comes and clears it. This morning I saw the beaver swim up to the culvert with cattails reeds in its mouth and then dive. After it surfaced I was able to snap this shot using flash.
One of the 2 beavers checking in their recent attempt at preventing water to flow through the man-made dam