Recent News and Publications Featured News on the Home page: Cedar Falls Groundwater Investigation Groundwater Availability Modeling of the Silurian Aquifer in East-Central Iowa Geologic Mapping for Water Quality Projects in the Upper Iowa River Watershed   Other Recent News: STATEMAP Mapping Program Information New Well Record Form for Well Drillers Winnishiek Lagerstätte Field Excavation Groundwater Availability Modeling of the Des Moines River Aquifer In Iowa RAGBRAI 2011 Brochures State Geologist Report RAGBRAI 2010 Brochures MODFLOW Models for Download Lower Dakota Groundwater Modeling Report Cambrian-Ordovician Groundwater Modeling Report The Iowa State-Wide Trace Element Soil Sampling Project: Design and Implementation The Winneshiek Lagerstätte Water Resources Management Program Groundwater Issues in the Paleozoic Plateau Water Quality Monitoring in the Hoover Creek Watershed 2004-2006, Johnson and Cedar Counties Hydrogeology of Pre-Illinoian Till at the I-380 Rest Stop Site, Linn County Water Quality Monitoring in the Yellow River Watershed 2005 Walnut Creek Watershed Restoration and Water Quality Monitoring Project, Jasper County Groundwater Availability Modeling of the West Nishnabotna River Aquifer in Iowa Groundwater Availability Modeling of the Des Moines River Aquifer (Common Ground article)