Imaging Iowa’s Levees

Thursday, May 4, 2023
Iowa has approximately 700 miles of levees protecting towns, agricultural land, and other infrastructure. Assessing the condition of levees is a critical component to ensure they remain strong during flood events. The IGS recently established methods to use geophysics to image levees via a pilot investigation with the Iowa Department of Homeland Security and Emergency Management
Surficial map of Lee County, Iowa

Geologic mapping at the Iowa Geological Survey

Wednesday, March 1, 2023
Geologic maps have tremendous societal, economic, and educational value. Bedrock and surficial geologic maps may be used to assist in aggregate resource evaluations, flood protection, hazard identification (sinkholes and karst), and water resource assessments.
Map of proposed Well Head Protection Area (WHPA)

Source Water Delineation for Communities

Friday, January 20, 2023
For better and more accurate source water delineations, IGS is available to assist communities with their well head protection planning, especially in the crucial delineation of the well head protection area.
Map showing USDM drought classifications for Iowa, as of Dec 8, 2022.

Drought Regions of Iowa

Wednesday, December 14, 2022
The Iowa Geological Survey (IGS) has significantly assisted in creating the drought plan by providing scientific expertise on the state’s regional characteristics and available hydrologic data.
Boxes of core samples stored at the OIGS warehouse

Questions Answered

Friday, August 26, 2022
Check out IGS GeoCore if you have questions about what a certain type of rock looks like. You may be able to find your answer.