Kansas holds 403 documented American beaver records, most of them logged on iNaturalist and GBIF along the state’s wooded rivers and reservoir shorelines. That tally tracks where people have looked and photographed the animal, not how many beavers actually work the state’s waterways.
A prairie state, wired for water
Beavers need standing timber along water, cottonwood and willow especially, and Kansas’s open grassland only offers that where a stream carries its own fringe of trees. Records cluster in two very different corners of the state: the spring-fed creek bottoms threading through the Flint Hills tallgrass around Tallgrass Prairie National Preserve, where cottonwood and willow line drainages cutting through otherwise treeless prairie, and the Kansas River basin near Clinton State Park, where flooded timber and slower reservoir water give beavers easy cutting stock. Farther southeast, Elk City State Park sits on the Elk River in the Osage Cuestas country, another wooded valley threading limestone ridge land.
Built to reshape its own habitat
As North America’s largest rodent, the beaver cuts bark, twigs and water plants, then stores branches near a lodge to get through cold weather. In Kansas that habit turns a narrow fringe of streamside cottonwood and willow into felled logs, packed mud dams and slow ponds, the same engineering the species runs nationwide but scaled to whatever timber a local creek can offer. Records land in every month of the year, but they climb through late winter and early spring, before leaf-out thins the bank cover, then fall back through summer, and rise again in November and December as beavers cache branches and shore up dams ahead of ice.
Status in Kansas
NatureServe ranks the American beaver S5, secure, in Kansas, and USGS NAS doesn’t list it as nonindigenous here. It’s native to the state’s river systems, an animal whose presence usually shows up first as felled cottonwood and packed mud rather than a direct sighting.
Full species profile
