Map Credits (general)
- Major roads from Oregon Department of Transportation.
- Non-state roads from Oregon Department of Transportation and Census T2009 TIGER files.
- Local roads from US Bureau of the Census, 2009 TIGER Files.
- Railways from US Bureau of Transportation Statistics.
- Airfields from US Bureau of Transportation Statistics.
- Large scale stream data from United States Geologic Survey and the National Hydrologic Database High, 2006-2011.
- Small scale stream data from Environmental Protection Agency and the National Hydrologic Database Plus, 2006-2010.
- Lake shoreline polygons from United States Geologic Survey and National Hydrologic Database High, 2006-2011.
- Political boundaries from US Bureau of the Census, mapping for 2010 Census.
- Lake watersheds from delineation of ten meter DEMs and from National Hydrologic Database Plus catchments and the Watershed Boundary Database.
- Shaded relief derived from ten meter DEM.
- Land cover type from National Land Cover Database (NLCD) 2006.
- Oregon public land ownership from US Bureau of Land Management from Oregon GEO as well as from Oregon State Parks.
- Public land ownership outside Oregon from various state and federal sources.
Map Credits (bathymetric)
- 1985 Atlas of Oregon Lakes
- Portland State University Center for Lakes and Reservoirs
- National Agricultural Inventory Program
- Oregon Department of Fish and Wildlife
- Portland State University
- US Soil and Conservation Service
- US Geological Survey
- US Army Corps of Engineers
- US Bureau of Reclamation
- US Forest Service