Figure 9: Examples of Mollisols (grassland soils) formed from loess. Both soils have mean annual precipitation of 450 mm. The Ustoll (a) has an ustic soil moisture regime and the Xeroll (b) has a ...

Discover Iowa’s unique and natural landmarks on the Loess Hills National Scenic Byway. Journey along the rolling bluffs of Loess soil on the northern portion of the Loess Hills National Scenic Byway.

SIOUX CITY -- A proposal to consider changing the route of the Loess Hills Scenic Byway through Sioux City ran into opposition Monday, prompting the City Council to defer action for several weeks. The ...