Oklahoma’s occurrence databases hold 368 records of the American beaver, all logged through GBIF, with the densest reports around Wichita Mountains Wildlife Refuge, Lake Thunderbird State Park, and Ouachita National Forest. That tally traces where people and cameras have found dams, lodges, and gnawed stumps. It doesn’t count how many beavers actually work the state’s rivers.
A namesake river in the driest corner
Oklahoma runs from the humid, forested Ouachita highlands in the southeast to the dry High Plains of the Panhandle, and a beaver’s need for water that never quite dries up tracks that change closely. The Panhandle even carries the animal’s name into its harshest ground: Beaver County and the Beaver River sit among the sandiest, most seasonal streams in the state. That country holds some of the thinnest beaver records anywhere in Oklahoma, because intermittent, sand-bottomed channels can’t support a dam or a flooded lodge the way the spring-fed creeks around the Wichita Mountains and the perennial rivers draining the Ouachitas can.
Building where the water already runs deep
A beaver doesn’t just live near water, it reshapes it, cutting willow and cottonwood and packing branches with mud to raise the water level around its lodge. On Oklahoma’s smaller Cross Timbers creeks that usually means a dam. Along bigger water like Lake Thunderbird, where the reservoir already holds plenty of depth, beavers more often skip the dam and dig a burrow straight into the bank instead. Reports peak in April and May, which fits the season when young beavers leave their birth colony to find open water and start building on their own, leaving fresh cuttings that are easy for a passerby to notice.
Status in Oklahoma
NatureServe hasn’t assigned the American beaver a ranked status in Oklahoma; it’s currently unranked (SNR) in the state, though its global rank sits at G5. It isn’t listed as nonindigenous by USGS NAS and is treated as native across its Oklahoma range.
Full species profile
