Soils of Colorado
1,609 soil series mapped on 49.24 million acres
Alfisols — moderately leached soils with a clay-enriched subsoil
The state soil, Seitz, ranks 21st of 1,609 series here on 391,313 acres. First place goes to Valent, an Entisol covering 3.6% of the state’s mapped soil. No order holds a majority; Mollisols lead with 38.4%, ahead of Aridisols at 20.6%.
Atlas series mapped in ColoradoGuide: state soils and where series began