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Recent News
GEOLOGIC MAPPING FOR WATER QUALITY PROJECTS IN THE UPPER IOWA RIVER WATERSHED ---NEW---

The Iowa Geological & Water Survey's three-dimensional geologic mapping for the Upper Iowa River Watershed is now available in digital format. The report and associated GIS coverages describe the bedrock "plumbing system" of the watershed and how it relates to the subsurface movement of contaminants to groundwater and streams.

STATEMAP MAPPING PROGRAM INFO ---NEW---

The Iowa Geological & Water Survey has completed a mix of quadrangle and county-scale geologic mapping projects in Adams, Black Hawk, Scott and Worth counties. All maps are new mapping projects with the exception of Adams County which is a compilation map. The maps are now available in digital format. To access, click here.

NEW WELL RECORD FORM ---NEW---

The new well record form for well drillers is now available on our website. Click here to use it. After completing the form, please mail it to us at IGWS.WellRecords@dnr.iowa.gov

MAJOR WEBSITE CHANGES FOR IGWS

This website is scheduled for redesign and transition into a new content management system this year. More details will be provided on the home page in the coming weeks.

WINNESHIEK LAGERSTÄTTE FIELD EXCAVATION

The Middle Ordovician Winneshiek Lagerstätte near Decorah is one of Iowa’s most interesting paleontological and geological sites because of its unusual fossil components and extraordinary fossil preservation. More...

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The Bedrock Geologic Map of Iowa portrays the current interpretation of the distribution of various bedrock stratigraphic units present at the bedrock surface. More...

Groundwater Basics is a geological guide to the occurrence, use, and vulnerability of Iowa's aquifers.