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Oxbows for Conservation

Posted on February 22nd, 2018

Preliminary studies, by Keith Schilling, et al., in Iowa suggest that oxbows intercepting surface and tile water can reduce the amount of nitrate-nitrogen reaching streams by roughly one half.  These studies will be presented during the upcoming 2018 Iowa Water Conference, March 21-22 in Ames, Iowa. https://iawatercenter.wordpress.com/2018/02/20/oxbows-for-conservation-and-nutrient-reduction-in-iowa-floodplains/

Optimizing Buffer Placement and Effectiveness

Posted on February 14th, 2018

In a research paper recently published in Landscape Ecology, by Keith Schilling (Associate State Geologist), Peter Jacobson (Grinnell College) and Calvin Wolter (Iowa DNR), the authors evaluated the patterns of sediments, water quality and land use in southern Iowa riparian zones.  Riparian zones are the strip of land which borders streams, usually classified in zones […]

Erosion and Sediment Delivery in Iowa

Posted on February 8th, 2018

The Iowa Geological Survey has been working on updating the USDA’s aging report on erosion and sediment delivery in Iowa which used data gathered in the 1970’s to estimate how much soil actually reaches Iowa streams. Sediment delivery is important to understand since even current estimates of soil erosion do not specify where eroded soil […]

Floyd the ‘Noid Says

Posted on January 29th, 2018

A message from Ray Anderson, vice-president of the Cedar Valley Rocks and Minerals Society: “Hello All, You have probably heard that the drive to convince the Iowa legislature to designate the crinoid as Iowa’s State Fossil is underway. We have 6 sponsors for Senate Joint Resolution 2001 “a joint resolution recognizing the fossil crinoid as […]

Crinoids proposed as state fossil for Iowa.

Posted on January 22nd, 2018

Crinoids have been proposed as the state of Iowa’s official fossil in Senate Joint Resolution 2001, introduced by Senator Joe Bolkcom, D-Iowa City. https://tinyurl.com/y85f6pcw

IGS Hydrogeologist doing field work, Dec 2017

IGS field work continues, rain or shine

Posted on January 8th, 2018

  The first snow of the season didn’t stop IGS Hydrogeologists Jason Vogelgesang and Nathan Holt from completing a geophysical survey in northwest Iowa. Results from the resistivity survey will be used to help develop a new well-field in the region.

Augmented Reality Sandbox Debut

Posted on October 31st, 2017

The Iowa Geological Survey showed off the UI Department of Earth and Environmental Sciences’ new augmented reality sandbox at the UI Creepy Campus Crawl last Friday, October 27, 2017. Kids (and adults) were able to mold sand into mountains, rivers, and oceans while the projected topography change before their eyes! Users could even simulate rainfall […]

A well being drilled on an Iowa golf course in 2015

Are golf courses contributing to Iowa’s nitrate runoff?

Posted on October 24th, 2017

The Cedar Rapids Gazette posted an article regarding IGS’s Schilling and Streeter’s research, funded by Iowa and national golf and turf grass groups. The study assigned each of Iowa’s 421 golf courses a number, then used a computer to randomly select one nine-hole course and one 18-hole course from each of three regions of the […]

IGS rock library

The IGS Rock Library is Full of Stories!

Posted on October 23rd, 2017

  The Iowa Geological Survey (IGS) is a recognized leader in the geologic and hydrogeologic sciences. As a part of IIHR—Hydroscience & Engineering (IIHR), a research institute within the University of Iowa’s College of Engineering, IGS continues to build on its rich scientific heritage, while serving Iowans through research, education, and outreach. IIHR and IGS […]

Iowa Geological Survey drill rig

New Drill Rig for IGS

Posted on October 6th, 2017

Our new drill rig was recently used for some drilling near the Winneshiek Shale outcrop. We look forward to its involvement in many more projects including Statemap and the Iowa Watershed Approach this year.