Each fall MDTU stocks Baltimore's Stony Run with rainbow trout, and hosts "Huck Finn Day", a day of trout fishing fun and stream-side learning for local youth in partnership with Friends of Stony Run and the local community. For 2020 and 20021, no group event was possible (due to pandemic) but the stream has been stocked by the chapter to promote the importance of caring for urban waterways, and to provide a special recreational and educational angling resource in the heart of Baltimore City, inspiring new generations of stream stewards.