IGS staff members talk to a group of students

IGS Demonstrates Well Installation and Soil Core Extraction

Friday, June 7, 2024
Matthew Streeter and Thomas Stoeffler led a demonstration for Muscatine high school students at the Muscatine Agriculture Learning Center. They showcased the operation of a drill rig to install a monitoring well and extract soil cores to teach soil health principles
Okoboji regional flow maps

Groundwater Flow in Hummocky Glacial Terrain in the Iowa Great Lakes Area

Friday, May 17, 2024
Iowa Geological Survey researchers investigated groundwater flow patterns within the Spring Run pothole wetland complex located east of East Lake Okoboji. Results are helping IGS develop a better understanding of the hydrology present within the IGL watershed and the larger PPR region.
The Ocheyedan river running dry

Iowa needs a plan for using its precious groundwater

Thursday, February 22, 2024
A conversion of several factors, some natural and some self-imposed, is leading to recognition that the State of Iowa needs a plan to safeguard groundwater reserves in the future.
Multi-colored rocks

Hydrogeologists’ Corner: Understanding Groundwater

Monday, February 5, 2024
The field of hydrogeology (hydro- meaning water, and -geology meaning the study of the earth) is the area of geology that deals with the distribution and movement of groundwater in the subsurface. Groundwater can be an abstract idea to folks because it is occurs below ground and cannot be directly observed.
front image of IGS Geode publication

The IGS Geode - a look at the activities of the Iowa Geological Survey from July 2022 through June 2023

Friday, January 12, 2024
Please enjoy an online copy of our magazine, The IGS Geode, showcasing some of the Iowa Geological Survey’s activities during the past year.
Photo of wetlands

Monitoring the Impacts of an Agricultural Wetland

Thursday, December 21, 2023
Anyone who has driven across Iowa knows that the state is dominated by agriculture. But among the fields lined with corn, soybean, and livestock, a new feature is becoming more common: wetlands.
A box containing rock samples

Dating Minerals to Determine the Age of Iowa’s Rocks

Monday, December 11, 2023
Evidence of how Iowa has evolved over Earth’s 4.6-billion-year history is preserved in the rocks. The job of an IGS geologist is to study these rocks using a variety of tools and methods and from the data collected continue to reveal and refine our understanding of that history.
Person working in a well

A New Age in Monitoring Iowa’s Aquifers

Wednesday, September 13, 2023
The IGS monitors groundwater levels in 48 wells scattered across Iowa that are completed in most of the major bedrock aquifers. These wells provide a historical record of groundwater levels and help evaluate aquifer sustainability.
Water measurement and sampling equipment

Assessing the Effectiveness of Modified Blind Inlets in Southeast Iowa

Thursday, August 17, 2023
Since 2019, the Iowa Geological Survey led by Matthew Streeter has been quantifying reductions in nitrate, phosphorus, and sediment concentrations at multiple sites in Keokuk, Scott, and Wapello counties in Iowa.
Ryan Clark and fellow volunteer Jeremy Davis with a full boat of trash

The Iowa Geological Survey and Iowa Project AWARE: A Match Made in Mud!

Wednesday, August 2, 2023
For the past 20 years Iowa Project AWARE (A Watershed Awareness River Expedition) has been cleaning up Iowa’s rivers with the help of hordes of volunteers and a few dedicated staff members. The Iowa Geological Survey (IGS) has participated just about every year, from helping haul trash to giving educational programs.