Brook trout monitoring in Garrett County, Md.
Trees grow on the bank of the Savage River in Garrett County, Md., on March 14, 2012. Matt Sell, a brook trout specialist with the Maryland Department of Natural Resources, fished for brook trout to monitor the population in the Savage River. The fish will be fitted with a tag that lets Sell track the movements of the fish through the watershed. (Photo by Caitlin Finnerty/Chesapeake Bay Program)