GAP Analysis Predicted Distribution Map

Water Shrew (Sorex palustris)

Species Code: SOPAL

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.

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Map with historical museum records

Other maps & Information:
  • NatureMapping observations
    throughout the year

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

The primary habitat requirements are cold, clear water in small streams and ponds with abundant cover, such as overhanging banks, holes in banks, overhanging vegetation or rocks. These conditions are most frequently met in the Canadian and Hudsonian zones along fast moving streams and ponds. Found to sea level if the mountains are close enough to the sea that small, cold streams reach the coast.

Found in all regions except the Columbia Basin. Core zones were: Alpine/Parkland, Sub-alpine Fir, Mountain Hemlock, Silver Fir, Western Hemlock, Interior Redcedar, and Grand Fir. In high elevation zones (Silver Fir and up) water/wetlands were good habitats. Non-forested and forested zones were "contingently suitable" dependent on the availability of appropriate microhabitats i.e. cold, clear streams.

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