From February 5 to 7, 2002, fisheries biologists from Olympic National Park (OLYM) conducted a general inventory of fish species in two streams that flow through Fort Clatsop National Memorial (FOCL) (Figure 1). Prior to these surveys, there were no published reports of fish species that inhabit streams that drain through FOCL (personal communication, Scott Stonum, Chief of Resources at FOCL; Joe Sheahan, Oregon Department of Fish and Wildlife, Astoria). Water quality surveys were conducted in ponds and streams throughout FOCL from 1994 to 1997 (Larson and Ek 1998). These surveys provided a baseline inventory of water quality variables and documented diverse and variable water quality characteristics in the park.