Welcome To The United States Geological Survey

The U.S. Geological Survey's (USGS) mission is to provide reliable scientific information about the Nation's natural resources. An integral part of that mission is to provide consistent, long-term water-resources data to customers, cooperators, and the public. To accomplish our mission, we operate a widespread surface and ground-water data collection network as well as research a wide range of scientific issues throughout Iowa.

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Featured News & Reports

Nitrapyrin in streams: The first study documenting off-field transport of a nitrogen stabilizer compound

First-ever reconnaissance study documents the off-field transport to adjacent streams of nitrapyrin (a nitrification inhibitor applied with fertilizers as a bactericide to kill natural soil bacteria for the purpose of increasing crop yields).


Methods for Estimating Selected Spring and Fall Low-Flow Frequency Statistics for Ungaged Stream Sites in Iowa, Based on Data through June 2014

The report presents regional regression equations for estimating six low-flow frequency statistics that include spring (April through June) and fall (October through December) 1-, 7-, and 30-day mean low flows for a recurrence interval of 10 years.


Swine Manure Application as a Source of Hepatitis E Virus and other Livestock-Related Pathogens

The presence of indicator bacteria, hepatitis E virus (HEV), and numerous bacterial pathogen genes increased following precipitation-induced runoff events in streams draining adjacent land surfaces in Iowa where swine manure was recently applied.


Recovery of Stream and Adjacent Groundwater After Wastewater Treatment Facility Closure

The hydrology and chemistry of a wastewater-impacted stream and adjacent groundwater responded rapidly (e.g. had fewer chemicals at lower concentrations) following wastewater treatment facility shutdown. However, the adjacent shallow groundwater remained a continuing source of some wastewater-derived contaminants such a pharmaceuticals to the stream at least 1 year post-shutdown.


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