Unified Interior Regions


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 do so, the Central Midwest WSC operates a widespread surface and ground-water data collection network as well as research on a wide range of scientific issues.

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Flooding and Train Derailment in Northwest Iowa

The Rock River flooded parts of northwest Iowa after several days of heavy rainfall in June 2018. A train carrying crude oil derailed over a flooded bridge south of Doon on June 22, prompting evacuations of nearby homes. Landsat 8 images from June 1 and June 24 show the extent of the flooding.

TNMCorps Mapping Challenge: City/Town Halls in IA, MN as of 08/19/21

A before-and-after image showing the change in edits between 8/05/21 and 8/19/21. Volunteers edited over 250 points during this timeframe.

TNMCorps Mapping Challenge: City/Town Halls in IA, MN as of 09/09/21

A before-and-after image showing the change in edits between 8/30/21 and 9/09/21. Volunteers added almost 70 new points during this timeframe (public domain).

TNMCorps Mapping Challenge: City/Town Halls in IA, MN as of 09/16/21

A before-and-after image showing the change in edits between 9/09/21 and 9/16/21. Volunteers added almost 50 new points during this timeframe. This challenge is now finished (public domain).

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July 28, 2014

Streamflow in the eastern portions of the Missouri River watershed has increased over the past 52 years, whereas other parts have seen downward trends. 

USGS science for a changing world logo
June 19, 2014

U.S. Geological Survey field crews are measuring flooding on the Big Sioux River and its tributaries in South Dakota.

May 22, 2014

Scientists have extracted DNA from fish eggs found in northern sections of the Upper Mississippi River and have determined that the eggs and larvae are not from Asian carp.

December 19, 2013

Secretary of the Interior Sally Jewell announced today that Interior's North Central Climate Science Center is awarding slightly more than one million dollars to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

July 30, 2013

Newly designed maps covering Indiana, Iowa, North Carolina, Pennsylvania, and Virginia are now available online for free download

May 2, 2013

As lingering spring rains soak eastern Iowa, crews from the U.S. Geological Survey continue efforts to make sure the streamgaging network is providing basic scientific information needed by water-resource managers and the community.

December 21, 2012

U.S. Geological Survey scientists plan to conduct the first comprehensive, high-resolution airborne survey to study the rock layers under a region of northeastern Iowa and southeastern Minnesota, starting December 2012 and lasting through January 2013.

July 23, 2012

At least one contaminant was found at levels of human-health concern in about one third of untreated groundwater samples collected from wells in the Cambrian-Ordovician aquifer system, according to a recent report by the U.S. Geological Survey.

July 19, 2012

Streamflow levels are below normal across much of the Midwest states of Iowa, Nebraska, Illinois and Wisconsin, according to the U.S. Geological Survey. Many states are experiencing severe drought, such as Iowa, where flows are less than 25 percent of normal streamflow conditions for the majority of the state. 

USGS science for a changing world logo
July 20, 2011

Flooding along the Missouri River continues as shown in Landsat satellite images of the Nebraska and Iowa border. Heavy rains and snowmelt have caused the river to remain above flood stage for an extended period.

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