GAP Analysis Predicted Distribution Map

Norway Rat (Rattus norvegicus)

Species Code: RANO
Non-native Species

Click to enlarge Range map

= Core Habitat
= Marginal Habitat

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.

Click to enlarge distribution map

Map with historical museum records

Other maps & Information:
  • NatureMapping observations
    throughout the year

Metadata (Data about data or how the map was made)

In all large cities in Washington and along streams and marshes on the west side. East of the Cascades, usually associated with cities and other buildings, particularly grain elevators. On the west side, all records are from lower elevations.

Core areas on the west side are lower elevation and on the east side steppe and Ponderosa Pine. Good habitat west of the Cascades are development, agriculture, and water/wetlands. On the east side or the Cascade crest, developed areas are the only good habitat.

Translated from the Washington Gap Analysis Mammal Volume by Dave Lester
Webpage designed by Dave Lester