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GAP Analysis Predicted Distribution Map

Beaver (Castor canadensis)

Species Code: CASCA

Breeding Range Map The green area shows the predicted habitats for breeding only. © NatureMapping Program + enlarge map Predicted breeding range = Core Habitat = Marginal Habitat   Fact Sheet: Basic | Advanced | Español Breeding Range Map The green area shows the predicted habitats for breeding only. The habitats were identified using 1991 satellite imagery, other datasets and experts throughout the state, as part of the Washington Gap Analysis Project.   Observations | GAP map

Habitat

Found along permanent streams, rivers, and lakes with trees or woody shrubs lining banks or in very close proximity. Beavers prefer hardwood trees, especially aspen, cottonwoods, and willow, but also use conifers and can exist where hardwood trees are absent. Most abundant in lowlands but occurs up to about 5000 feet in Washington. May occur in hot desert where suitable conditions exist.

Core zones included all steppe zones and most forested zones below Mountain Hemlock and Sub-alpine Fir. Fresh water/wetlands in all zones are good habitat. The Beaver requires moderately large bodies of water but they do breed in ponds below 100 acres.

Translated from the Washington Gap Analysis Bird Volume by Dave Lester
Design by Tim Knight