The free public records the library draws on. Each one can be looked up for a single parcel. This shelf is growing toward a complete catalog of free sources, Oregon first, then national.
Flood maps
FEMA National Flood Hazard Layer: flood zones and FIRM panels for any parcel.
Open source →Original land surveys
BLM General Land Office records: patents, plats and surveyor field notes back to the 1800s.
Open source →Historic topographic maps
USGS topoView: every historic topo quad, often back to the 1890s.
Open source →Soils
USDA Web Soil Survey: soil map units, farmland class and limitations.
Open source →Census
U.S. Census historical records and the 1950 census release via the National Archives.
Open source →Landslides
DOGAMI SLIDO: Oregon's statewide landslide inventory.
Open source →Fire history
MTBS (Monitoring Trends in Burn Severity): fire perimeters since 1984.
Open source →Water rights
Oregon Water Resources Dept. water rights mapping.
Open source →Historic aerial photos
USGS EarthExplorer aerial photo single frames.
Open source →Contamination
EPA Cleanups in My Community and Envirofacts.
Open source →Climate
NOAA Climate Explorer and historical station data.
Open source →Historic places
National Register of Historic Places data.
Open source →LiDAR
Oregon DOGAMI LiDAR viewer: bare-earth terrain, old roads and ditches.
Open source →Newspapers
Library of Congress Chronicling America: free digitized newspapers.
Open source →