Earthplace's Harbor Watch program will conduct a four-week stream-exploration and water-monitoring workshop for adults and high school students in March. The program will take place 9:30 a.m. to noon Saturday, March 3, 10, 17 and 24, in the field and in Earthplace's facility, 10 Woodside Lane.

The workshop will give participants an opportunity to learn how to measure the health of streams and harbors and recognize physical, chemical and bacteriological parameters as water quality indicators, according to an Earthplace news release. Participants will also have a chance to study aquatic insects as a measure of water quality and watch water-testing techniques with an emphasis on instrumentation and laboratory research to better understand pollution and its effects.

Field work will include visits to local rivers and harbors.

Participants may volunteer for ongoing monitoring efforts that help to assess the water quality of local watersheds such as the Norwalk, Aspetuck and Saugatuck Rivers. This workshop is ideal for educators who would like to introduce the topic of aquatic biology into the classroom, the release states.

The cost, which includes handout materials and refreshments, is $45 for members and students and $75 for nonmembers. Call 203-227-7253, ext. 121, to register.