New York’s iNaturalist and GBIF records for the American beaver run past 2,400, concentrated around Adirondack Park, Sterling Forest State Park, and Catskill Park. That volume says more about how closely these public lands get watched than about how many beavers actually live there, but the pattern does track something real: the Adirondacks and Catskills hold the lakes, ponds, and slow streams this species depends on.
A landscape built for damming
The Adirondacks alone hold thousands of lakes and ponds threaded together by slow-moving streams, exactly the kind of terrain a beaver reshapes to its own liking. It fells birch, aspen, and maple near the water’s edge, hauls the branches into a dam that backs a stream up into a pond, then builds a lodge in the new pond or against the shoreline. Sterling Forest and the Catskills offer the same ingredients on a smaller scale: hardwood cover right to the water’s edge and enough gradient to make a dam worth building.
A New York history written in fur
New York’s connection to this species goes back further than any occurrence database. Dutch traders founded Fort Orange, now Albany, specifically to ship beaver pelts down the Hudson to Europe, and the animal still appears on New York City’s official seal as a nod to that trade. Trapping pushed beavers close to gone in the state by the early 1900s, so what’s recorded here today reflects recovery after near-elimination, not an unbroken run.
Spring is when the records pile up
Records peak in April and May, right as ice goes out on Adirondack ponds and beavers become easier to spot moving and feeding in open water. Kits are born in late spring inside the lodge, adding a second reason activity picks up through those two months before it eases into summer.
Status in New York
NatureServe ranks the American beaver S5, secure, and it’s native to New York. After near-elimination by the fur trade a century ago, it has recovered across the state’s watersheds and remains one of the most frequently recorded mammals in this dataset.
Full species profile
