Spencer Gragg, 8, collects water samples from Nancy Creek on Jan. 12 to take to Oglethorpe University for further study. Spencer was with a group at the Blue Heron Nature Preserve in Buckhead that collected specimens to help gauge the health of the stream.

Top, back row, from left, Christine McKay, Kayla Hughes, her brother Steven, Don McAdam, Evelyn Quinones and Randy Gragg, with, front left, program instructor Maura Dudley and Spencer Gragg, gather water samples from Nancy Creek on Jan. 12 to take to Oglethorpe University for study.

Steven Hughes, left, Christine McKay and Maura Dudley, right, in the creek at Blue Heron Nature Preserve.

Spencer Gragg, at Oglethorpe’s biology lab, peers at collected organisms through a magnifying glass.

The group closely inspects water samples. Below, Kayla Hughes, an Oglethorpe alumni, Randy Gragg.

Oglethorpe Biology professor Charlie Baube, look for life forms.