The Pennsylvania floodplains layer was originally created by digitizing Federal Emergency Management Agency Flood Insurance Rate Map/Federal Hazard Boundary maps.

Click here for complete source metadata.

Due to the nature of transferring the floodplains from the Federal Emergency Management Agency maps to our plotted 1:24000 scale maps this coverage should be considered to be the "best representation" of the data but not as accurate as, for example, a map of Global Positioning System's floodplain coordinates. Use this data with caution.

The Floodplains layer is only visible at map scales smaller than 1:80,000.

Note: All SoilMap source data has been projected to an Albers Conical Equal Area projection with the following parameters.

PROJCS["Albers Conical Equal Area",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-78.0],PARAMETER["Standard_Parallel_1",40.0],PARAMETER["Standard_Parallel_2",42.0],PARAMETER["Latitude_Of_Origin",39.0],UNIT["Meter",1.0]]