New Water Resources Management Program
The Dakota aquifer is the first aquifer to be studied by the Iowa Geological and Water Survey under the auspices of the new Water Resources Management program. The geologic and hydrologic evaluations concentrate on the lower part of the Dakota Aquifer, while the water quality evaluation focuses on the entire Dakota Aquifer. As more wells are completed in the aquifers of Iowa, and additional stratigraphic, construction, and water-quality data are interpreted and entered into our databases, our knowledge of these valuable resources will improve and our evaluation of them will be refined. Click here for details.
Recent Survey Publications and Website Updates
"MODFLOW" MODELS FOR DOWNLOAD --- NEW ---
Groundwater flow within the Cambrian-Ordovician and Lower Dakota aquifers were modeled using Visual MODFLOW version 2009.1. In order to run the models on a local PC, compressed (.zip) files were created and placed on the Iowa DNR's FTP website for public consumption. Before downloading a compressed (.zip) file, please open the associated "README" file (.txt) to learn more about the selected model. To access these files, click on the link below:
MODFLOW Models
OTHER RECENT PUBLICATIONS
RAGBRAI 2009 Brochures
The Winneshiek Lagerstätte
Groundwater Issues in the Paleozoic Plateau
Water Quality Monitoring in the Hoover Creek Watershed 2004-2006, Johnson and Cedar Counties
Hydrology 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
Exploring the Midcontinent Rift
The Midcontinent Rift is a failed rift, a great rip through the earth's crust stretching for a thousand miles and crossing the center of Iowa. Organic-rich lake sediments are potential petroleum source rocks and overlying coarse clastics may serve as reservoir rocks.
Click here for details
Our Common Ground Fact sheet (Pdf)
Download Poster (7.8Mb Pdf)
New Resource Information Fact Sheets
Our Common Ground
“Our Common Ground” is a series of Resource Information Fact Sheets describing services and information available at the DNR-Geological Survey. We strive to make information and technical assistance on earth and water resources available to Iowans.
Topographic Maps and Base Maps
Easily locate and order U.S. Geological Survey 7.5 minute quadrangle maps, county topographic maps and other popular maps of Iowa with our new easy to use Web interface. These maps of local terrain conditions serve outdoor recreation enthusiasts as well as scientists and other professionals.
Click here to enter.
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Iowa's Water Quality Database Ultimately we envision Iowa STORET as a “one-stop shopping” location for all the state’s water monitoring data.
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Geosam is the Iowa Geological Survey's geologic site and sample tracking program. |
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Iowa's Groundwater Basics A geological guide to the occurrence, use, and vulnerability of Iowa's aquifers. |
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This book is a portrait of Iowa's land and resources as we see them today and as they were originally. |
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A window on YOUR environment. |
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