Get out and trap them little mountain creeks and you'll find them. I've seen plenty of them over in your country, but all I can recall were in ponds in those smaller creeks. I can't recall seeing any over there in the rivers. They often don't use those food caches much if it doesn't freeze up, they prefer fresh veggies, I reckon.

Farm ponds here often have caches. River does not freeze solid most years and they do not have them or they are small. Caches I've seen in areas with harder winters are much bigger. I have often wondered if beaver caught in say Georgia then transplanted to an enclosure in someplace like N.D. would build a cache. Is it a learned behavior or an instinct they all posses depending on the length of daylight?

I think Paul has commented on that with his southern beaver. Something about them being transplanted from different areas, with the northern beaver making a cache, and the southern not doing so. Hopefully he chimes in, and we'll see if I'm remembering right.

They make feed piles here usually real close to the bank hole den. On quiet days with no wind or noise, I have actually heard them gnawing down in those holes.

Rickey

A lot of times the beaver will follow the crop rotation.

Beaver and groundhogs are both good at geometry. I have seen lots of semi circles mowed into the crops, especially soybeans, at the edge of a pond or field. The beavers pull out or the groundhogs den will be in the center of the semi circle. I have also seen near perfect circles in soybeans when the den is out in the field.

Beaver will keep eating beans after they are dry also.

All my beaverin' is done out of 14' Jon boat so it's all bigger waters and zero ice ever.

Seen that a lot here, no sign of a cache , yet a lot of corn stalks dragged into the river.
Found where the bank caved in, and old tunnels going back into the bank, after a flood, so the stalks may have been washed out.
Or covered with silt.
Never did find the entrance hole.

I wonder if it has more to do with moving water...meaning if they reside in still water they cache, but in moving water they tend to not?

I caught beaver in the west in creeks/small rivers with pretty good current. By February ice is over a foot thick. They have big caches.

West? Where in the west?

I would see big caches in both rivers and lakes.

Feed caches are rare in low elevation western Washington, and I assume rare in the same type of habitat in western Oregon.
But in Washington, as soon as you get up in the mountains where the ponds will freeze for an extended period of time, you will find caches.

In tropical and subtropical countries you never find people canning or freezing food for later. I think it's kind of the same deal with beaver.

Is it that, or that people in those countries have a lower IQ? I don't think many here can because they are afraid they can't get to Kroger for a week due to a snow storm... they can because they know emergencies happen. Hurricanes, tornadoes, job loss, rampant inflation, etc.

In WY, Yukon John