From Carol Evans, Fisheries Biologist for the BLM in Elko Nevada:
It is a new beaver dam on the edge of a meadow. The dam is one of many in the Maggie Creek Watershed Restoration Area (in slide show) which has shown up in response to better habitat conditions and grazing management at the watershed level. Here I’m thinking water sequestration in the face of yet another drought year. Plus, the pond was full of migrating ducks!