NW Biological Assessment Workgroup | Region 10 | US EPA

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NW Biological Assessment Workgroup

Stream with tools for bioassessment.On this Page:

For more information, contact: Gretchen Hayslip (hayslip.gretchen@epa.gov)

What is Aquatic Bioassessment?
Aquatic biological assessment (bioassessment) is the use of resident biota to determine the condition of aquatic resources. Information on this page concentrates primarily on the use of macroinvertebrate, periphyton and fish assemblages in rivers and streams, although many of the principles apply to wetland and lake ecosystems as well.

Workgroup Meetings

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.


2012 Annual Meeting
The 2012 Annual Meeting will be held in Boise, Idaho. The meeting will start at 1:00pm on Wednesday, October 24, 2012 and will end at noon on Friday, October 21, 2012. See the attached document for additional information on logistics.

2011 Annual Meeting - October 26-28, 2011
The 2011 Annual Meeting was held on October 26-28 (started at 1:00pm on Weds. and ended at noon on Fri.). It was held at Skamania Lodge in Stevenson, WA.

Previous Annual Meetings' Notes and Abstracts

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Who are we? The Northwest Biological Assessment Workgroup
The purpose of the Northwest Biological Assessment Workgroup (NBAW) is to promote better understanding of the biotic communities in freshwater aquatic ecosystems of the northwest. The NBAW was founded in 1990. The NBAW encourages and facilitates the use of benthic macroinvertebrates and fish assemblages and other biota in the assessment of the condition of freshwater aquatic resources and other environmental and natural resource management decision-making. Membership is open to anyone who is interested in freshwater biotic communities and their role in aquatic ecosystems in the Northwest (generally, but not limited to: Alaska, British Columbia, Idaho, Oregon, Washington, and Northern California).

(PNW Chapter of the Society for Freshwater Science)


Stream with tools for bioassessment.On this Page:

For more information, contact: Gretchen Hayslip (hayslip.gretchen@epa.gov)

What is Aquatic Bioassessment?
Aquatic biological assessment (bioassessment) is the use of resident biota to determine the condition of aquatic resources. Information on this page concentrates primarily on the use of macroinvertebrate, periphyton and fish assemblages in rivers and streams, although many of the principles apply to wetland and lake ecosystems as well.

Workgroup Meetings

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

2014 Annual Meeting
The 25th Annual meeting of the Pacific Northwest Chapter of the Society for Freshwater Science (NW Biological Assessment Workgroup). The 2014 Annual Meeting will be held in Western Washington in late October or early November 2014. The date and location will be announced here.

Previous Annual Meetings' Notes and Abstracts


Who are we? The Northwest Biological Assessment Workgroup
The purpose of the Northwest Biological Assessment Workgroup (NBAW) is to promote better understanding of the biotic communities in freshwater aquatic ecosystems of the northwest. The NBAW was founded in 1990. The NBAW encourages and facilitates the use of benthic macroinvertebrates and fish assemblages and other biota in the assessment of the condition of freshwater aquatic resources and other environmental and natural resource management decision-making. Membership is open to anyone who is interested in freshwater biotic communities and their role in aquatic ecosystems in the Northwest (generally, but not limited to: Alaska, British Columbia, Idaho, Oregon, Washington, and Northern California).


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URL: http://yosemite.epa.gov/R10/OEA.NSF/Monitoring/nw_bio

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