Biological Assessment

This training enables you to collect and identify aquatic macroinvertebrate creatures in your stream to help you further understand your stream’s quality.  Some organisms can tolerate more pollution, and others are more sensitive.  The presence or absence of certain macroinvertebrates provides insights about longer-term water quality conditions, in comparison to the “snapshot” understanding of conditions from individual water quality sampling visits. 

Complete the online training module if you are interested in taking the first step toward conducting a biological assessment.

If you would like to schedule an in-person training session on conducting a biological assessment, email

Visit for access to lots of great info about these creatures.  They also have a PocketMacros app that you can download to help you identify the types that you find!