Southern Iowa Drift Plain Iowa Geological Survey - The University of Iowa

The Southern Iowa Drift Plain is certainly the largest of Iowa’s landform regions and it is the primary region travelers on Interstate 80 will see. Noted Iowa artist Grant Wood emphasized the steeply rolling character of this landscape in many of his stylized paintings, especially Young Corn and Fall Plowing.

Geography of Iowa - Wikipedia

The four watersheds areas involved in the Iowa Watersheds Project

Iowa's Nature Series Educational Graphics

Geography of Iowa - Wikipedia

Potential of water quality wetlands to mitigate habitat losses

Iowa's Nature Series Educational Graphics

Geography of Iowa - Wikipedia

USGS - NAWQA - Water Quality in the Eastern Iowa Basins - Introduction

Geographical Features of Iowa

Iowa's Nature Series Educational Graphics

Iowan Surface Iowa Geological Survey - The University of Iowa