3.                           W I L L A M E T T E   V A L L E Y                                                                                                                                                                                                                                                                                                                                                            


      Level IV Ecoregion                                   Physiography                                                              Geology                                                                          Soil                                                                        Climate                                            Potential Natural                         Land Use and Land Cover    
                                Area                                                           Elevation /                  Surficial material and bedrock                Order (Great Groups)                             Common Soil Series                Temperature  /     Precipitation     Frost Free      Mean Temperature                       Vegetation                                                       
                               (square                                                        Local Relief                                                                                                                                                  Moisture Regimes    Mean annual       Mean annual      January min/max;
                               miles)                                                             (feet)                                                                                                                                                                          (inches)            (days)      July min/max, ( F)                                                                                      

3d. Valley Foothills           2527 Rolling foothills with medium gradient,                    10-1500         Miocene andesitic basalt and marine                  Alfisols (Haploxeralfs), Ultisols  Bellpine, Jory, Nekia, Hazelair,                         Mesic/             40-60           165-210             32/46;           On drier sites: Oregon white oak and           Rural residential development, pastureland,
                                           sinuous streams.                                         /          sandstone.                                           (Haplohumults, Palehumults),             Willakenzie, Laurelwood, Cascade.                   Xeric                                                 50/80            madrone. In moister areas: Douglas-            coniferous and deciduous forests, forestry,
                                                                                              400-1000                                                              Mollisols (Haploxerolls),                Moderately deep to very deep, silty                                                                                        fir more common. Some western red              vineyards, Christmas tree farms, orchards.
                                                                                                                                                                    Inceptisols  (Fragiumbrepts)             clay loam to silt loam.                                                                                                    cedar.