january, 2021

Stream Science Classes

Event Details

Stream Science at ANS

For 25 years, ANS has been teaching the natural history of aquatic ecology and training volunteer stream monitors who track the health of our region’s streams. Learn from the experts: study stream science in our introductory classes, and you just might be inspired to become a stream monitor yourself!


How to Read Your Stream*  

Wednesday, September 22 (7-9:30 pm)  

Virtual via Zoom 

Learn about the influence of land uses on streams, stream character and dynamics, bank erosion, bar formation, substrate composition, different velocity-depth regimes, and the importance of riffles and riparian vegetation. We will practice assessing stream habitat by using photographs of streams and the forms that monitors fill out in the field.  

How to Monitor: Field Workshop* 

Sunday, September 26 (1:30-4 pm)  

Ten Mile Creek, Boyds, MD  

We will visit a healthy stream to practice monitoring techniques and to collect and identify the benthic macroinvertebrates we find. 


Stream Science Introduction:

  • Healthy Stream Biology*. An introduction to monitoring and non-insect macroinvertebrates

Advanced Macroinvertebrate Identification Series:

Our advanced classes are perfect for those interested in deepening their knowledge about biological stream monitoring and are taught by instructor Cathy Wiss. Each class runs 45 – 70 minutes and includes extensive photos and videos collected by our own monitoring volunteers and staff, plus several carefully curated recommended videos from other sources.

  • Caddisflies
  • Beetles
  • Megaloptera, Hemiptera, Lepidoptera
  • True Flies
  • Damselflies and Dragonflies
  • Mayflies
  • Stoneflies
  • Bonus review session included if you sign up for the full series (15% discount for entire class series ($170 non-members / $102 members, includes a bonus review session).)


Registration required: click here to register online for self-paced classes.

Cost for all classes: each class $25 non-members / $15 ANS members / Free for anyone who has monitored with the ANS program in the last two years.

*These classes are recommended for all volunteer monitors and those interested in joining the program. 

Contact cleanstreams@anshome.org for more information.

See the full list of classes on our Water Quality Monitoring Page.


Year Around Event (2021)