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Online Atlas

Relative Earthquake Hazard Risk Areas
With funding from Project Impact and through the technical assistance of the Oregon State Department of Geology and Mineral Industries we have put together a map that shows relative earthquake risks. This map shows the risk of damage caused by an earthquake, should one occur.
Relative Wildfire Hazard Risk Areas
With the help of local Fire Districts and the Oregon Department of Forestry, a potential wildfire hazard map has been created for Clackamas County. This map is based on models developed by the State and others to account for the many factors that contribute to the potential for wildfires.
Fire Districts
This map displays the Fire Districts in the County. Information for boundaries provided by each Fire District.
Watersheds
This map displays the 5 major watersheds within the County. These watersheds are further broken down into sub water basins. The sub water basins maps is available from Clackamas County GIS.
School Districts
This map shows the boundaries of the 18 school districts in Clackamas County. Individual school attendance area maps are available from Clackamas County GIS.
Relative Population in the Year 1900
This map shows the relative population density and distribution in the County based on residential structures built on or before the year 1900.
Relative Population in the Year 1940
This map shows the relative population density and distribution in the County based on residential structures built on or before the year 1940.
Relative Population in the Year 1960
This map shows the relative population density and distribution in the County based on residential structures built on or before the year 1960.
Relative Population in the Year 2000
This map shows the relative population density and distribution in the County based on residential structures built on or before the year 2000.
2000 Census Population Density
This map depicts population density by Census Tract based on 2000 Census figures.
1990 Census Population Density
This map shows population density by Census Tract based on 1990 Census figures.
Average Rainfall
This map shows the average rainfall as compiled by the State Climate Center for the last 30 years in 10 inch increments.
Public Lands
This map displays publicly owned lands by each of the various major land managers.

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Geographic Information Systems (GIS)
168 Warner Milne Rd
Oregon City, OR 97045
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(503) 723-4814