Janvi Patel, right, and Ava Weaver release brook trout into the stream below The Basin outlet in North Auburn on Thursday. Edward Little High School students from the University of Maine at Augusta Bridge Chemistry class met with Lynne Richard of the Lewiston-Auburn Watershed Protection Commission to test the water quality and to release about 250 trout that they raised from eggs in their EL classroom. Teacher Brandy McFadden said the Bridge class allows students to earn credit from UMA and EL at the same time. (Daryn Slover/Sun Journal)

Edward Little High School junior Nathan Bartshe releases his container of brook trout. (Daryn Slover/Sun Journal)

Edward Little High School junior Ava Weaver and Lynne Richard of the Lewiston-Auburn Watershed Protection Commission search for macroinvertebrate, which are indicators of water quality, in a sample of water from The Basin outlet in North Auburn on Thursday. (Daryn Slover/Sun Journal)

Alec Larson, left, and Cameron Winslow release brook trout into the stream below The Basin outlet in North Auburn on Thursday. Edward Little High School students from the University of Maine at Augusta Bridge Chemistry class met with Lynne Richard of the Lewiston-Auburn Watershed Protection Commission to test the water quality and to release about 250 trout that they raised from eggs in their EL classroom. Students tested the nitrate, pH, salinity, phosphorus and conductivity levels in the stream water before releasing their trout. Teacher Brandy McFadden said the Bridge class allows students to earn credit from UMA and EL at the same time. (Daryn Slover/Sun Journal)