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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

Table of Contents
Macroinvertebrate Communities


The historical presence of macroinvertebrate communities in this area is unknown. Macroinvertebrate communities would have likely been present in any historic aquatic habitat.


Almost no aquatic habitat exists to support macroinvertebrate communities.


Processes that have led to alterations in macroinvertebrate communities include filling of wetlands, piping and hardening of stream channels, clearing of vegetation, and residential, transportation, and commercial development.
Maps & Files

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