Oregon has some of the best trout habitat in the United States, and is home to many native species.
Along the coast, native Coastal Cutthroat and rainbow trout reside in streams which also see sea-run steelhead migrate both summer and winter. Inland, redband trout, more primitive cousins of the coastal rainbow, can still be found in more protected streams, while native Bull Trout compete with exotic Eastern Brook trout in the coldest and less fertile habitats. Further east, westslope and lahontan cutthroat can be found in isolated streams upland streams.
Oregon’s fish and game department is one of the most enlightened in the country in terms of disclosing GIS information about salmonid fisheries, and a great deal of information is available, not only for Native and anadromous species, but also about resident coldwater habitat. Oregon’s water quality classification system shows coldwater habitat explicitly.