North American beaver · Castor canadensis

Beaver Sightings in Washington

2,711 documented observations · most recent 5/20/2026

Beaver activity in Washington remains consistently documented, with 2,711 sightings on record and observations continuing into late May 2026. The most recent entries in the dataset span just a few days, suggesting reporters are active in the field right now. Among the latest sightings is a particularly detailed account noting a beaver feeding along a bank, a lodge, and a tail slap — the kind of multi-behavior observation that points to an established animal in a familiar territory rather than a chance encounter. Most recent reports logged the presence of the animal directly, which is the most straightforward evidence type, though lodge sightings like this one serve as useful indicators of longer-term occupancy.

The breadth of this dataset reflects years of community science effort. Observations sourced from platforms like iNaturalist represent voluntary contributions from people who spend time near waterways and wetlands, and a record count above 2,700 suggests Washington has a reasonably engaged observer base paying attention to these animals.

Beavers occupy an outsized ecological role relative to their size. As a keystone species, they alter landscapes through dam construction in ways that benefit a wide range of other organisms. The ponds and wetlands they create slow water movement, raise local water tables, and can improve conditions for fish, amphibians, waterfowl, and riparian vegetation. In regions where seasonal drought and shifting precipitation patterns are a concern, beaver-modified waterways have drawn growing interest from researchers and land managers because of their potential to retain water on the landscape longer into dry months. Where salmon are present, beaver-influenced habitat can offer cooler, slower water that young fish may use for rearing.

None of that backstory diminishes what the data here shows on its own terms: beavers are being seen in Washington regularly, and people are paying attention.

Recent observations

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