3125 Portia St
PO Box 83581
Lincoln, NE 68501
402.476.2729

kcameron_enwra@lpsnrd.org

 

News

The 2020 Airborne Electromagnetic (AEM) Survey Flight reports for the Nemaha and Papio-Missouri-River NRDs are complete! You can also click here for an updated location map of the eastern Nebraska 2006 to 2020 flight locations. A statewide interactive map of all flight lines is available here. Digital polyline files are available on the AEM tabs and at the bottom of the AEM Project Partners Tab. New tutorial video links demonstrating the download and use of the report deliverables are also available on the Media/Downloads Tab as well as other ENWRA project reports. Be sure to visit our other website tabs and the Nebraska GeoCloud website for more information on statewide AEM data availiability, guidelines and standards.

Groundwater elevation, weather station data and sampling results for ENWRA's 3 pilot study sites are now available under the Media/Downloads Tab. Click here for a link to download the 2008 to 2021 compiled datasets and graphs (420 MB).

Secondary Bedrock Aquifer Sampling and Age-Dating Project (Water Sustainibility Fund #4125) - The following USGS online publication was approved for release and has been made available to the public: USGS Scientific Investigations Report 2021–5055

 

 

Calendar

ENWRA's Spring Technical Committee Meeting was held May 17, 2021 via zoom. Click here here for a copy of the meeting minutes.

 

Page Quick Links: 2006 Ashland HEM . 2007 Firth HEM . 2009 Sprague HEM . 2013 Clarkson-Howells TDEM . 2013 Dwight-Val.-Brainard TDEM . 2007 Pilot Sites (Google Earth) . Recharge Stations

 

Media and Downloads

png Internet Explorer browser is no longer supported by ENWRA Dropbox data links

AEM Data on ENWRA Website PDF Play Overview (png 2020 AEM Reports are available on the 2020 AEM tab)

 

Tutorials

AEM Data in Google Earth Tutorial Part 1PDF Play

AEM Data in Google Earth Tutorial Part 2PDF Play

AEM Data in Google Earth Tutorial Part 3PDF Play

AEM Data in Google Earth Tutorial Part 4PDF Play

AEM Data in Google Earth Tutorial Part 5PDF Play

 

Documents

OverviewENWRA - Introduction to a Hydrogeological Study

This publication contains detailed information about ENWRA's projects and goals, as well as a general overview of groundwater in Nebraska.

PDF Download (PDF, 6.5 MB)

 

 

 


SurveyUSGS Open File Report 2008-1018

This report assesses multiple geophysical techniques that were applied near Oakland, Ashland and Firth, Nebraska.

PDF Download (PDF, 1 MB)

 

 

 


SurveyUSGS Scientific Investigations Report 2011-5228

This report assesses multiple geophysical techniques that were applied near Oakland, Nebraska.

PDF Download (PDF, 14 MB)

 

 

 


SurveyAshland-area Helicopter Electromagnetic (HEM) Survey Report, 2006

This report contains maps and discussion of the hydrogeology in the Ashland, Nebraska area based on interpretation of HEM data collected in 2006.

PDF Download (PDF, 3 MB)

 

 


SurveyFirth-area Helicopter Electromagnetic (HEM) Survey Report, 2007

This report contains maps and discussion of the hydrogeology in the Firth, Nebraska area based on interpretation of HEM data collected in 2007.

PDF Download (PDF, 8 MB)

 

 


Cross SectionsGeologic Cross Sections, Eastern Nebraska

This document presents three regional geologic cross sections and accompanying text describing the methodology used to draw the cross sections.

PDF Download (PDF, 2.6 MB)

 


ENWRA Recharge Studies

These two articles summarize
recharge study data collected at
ENWRA's pilot sites.

PDF Download (PDF, 2 MB)

PDF Download (PDF, 2.3 MB)

 

 


Survey2009 HEM Poster

This poster summarizes some of the HEM data collected in 2009. The poster was presented at the 2009 Geological Society of America Annual Meeting in Portland, OR.

PDF Download (PDF, 4 MB)

 


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Ashland Pilot-Scale MODFLOW Model

This model assesses the effects of changes in on-farm irrigation efficiency, land use, and irrigated acres on groundwater levels and streamflow for improved water management.

PDF View Website

 

 


SurveyAquifer Delineation Maps

These maps show the distribution of unconsolidated sand and gravel units serving as localized aquifers at the NRD scale.

Lewis & Clark Report PDF Download (PDF, 1 MB)

Lewis & Clark Figures PDF Download (PDF, 5 MB)

Lower Platte North Report PDF Download (PDF, 1 MB)

Lower Platte North Figures PDF Download (PDF, 57 MB)


SurveyLower Elkhorn Report on Airborne Electromagnetic (AEM) Survey in the Clarkson/Howells area

Report on AEM flights conducted for the area between the towns of Clarkson and Howells that experienced record groundwater declines during 2012. Exploration Resources International (XRI) entered into an agreement with Lower Elkhorn to undertake the hydrogeologic study in 2013.

Clarkson Howells Report PDF Download (PDF, 3.5 MB)

 

The results presented in the Clarkson-Howells Report have been provided in Google Earth format. You can download the free version of Google Earth Pro by clicking here. Once you have Google Earth installed on your computer you can download the .kmz file (656 KB) from the ENWRA Dropbox here. Dropbox is free for users. You can select "no thanks" to the sign-up for a Dropbox account and still download the files (Dropbox no longer works in internet explorer browser). If you already have a Dropbox account, please save to your computer hard drive (choose direct download) so as to not fill up space on your personal Dropbox account.

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Lower Platte South Report on AEM Survey in the Dwight-Valparaiso-Brainard (DVB) area

Report on AEM flights conducted for the DVB area that experienced groundwater declines during 2012. XRI conducted the hydrogeologic study in August 2013.

DVB Report PDF Download text (PDF, 3.6 MB)

PDF Download Appendix 1-6 (PDF, 8.2 MB)

PDF Download Appendix 7A (PDF, 9.8 MB)

PDF Download Appendix 7B (PDF, 9.2 MB)

PDF Download Appendix 7C (PDF, 4.0 MB)

 


ReportSwedeburg-area Helicopter Electromagnetic (HEM) Survey Report, 2009

This report contains maps and discussion of the hydrogeology in the Swedeburg, Nebraska area based on interpretation of HEM data collected in 2009.

PDF Download (PDF, 13.6 MB)

 

 


USGS Open File Report 2010-1288

Survey

This report contains data gathered from HEM surveys flown in the Sprague and Swedeburg areas in the spring of 2009.

PDF Download (PDF, 4 MB)

 

 

 


ReportSprague-area Helicopter Electromagnetic (HEM) Survey Report, 2009

This report contains maps and discussion of the hydrogeology in the Sprague, Nebraska area based on interpretation of HEM data collected in 2009.

PDF Download (PDF, 4.7 MB)

 

 


Google Earth AEM Data Files (See 2014 2015 and other newer AEM tabs for more recent data)

Lower Platte South Google Earth Deliverable for Sprague area

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The results presented in the Sprague-area Helicopter Electromagnetic (HEM) Survey Report, 2009 have been converted into Google Earth format for the Sprague, Nebraska area based on interpretation of HEM data collected in 2009. Click here for a link to download the data (you can select "no thanks" to the pop-up and still download the

files).

Google Earth Deliverables for the ENWRA Pilot Study Sites

The airborne survey results from ENWRA's 2007 Oakland, Ashland and Firth Pilot Study Sites (multiple reports listed above) have been converted into Google Earth format based on interpretation of HEM data collected in 2007. Click here for a link to download the data (you can select "no thanks" to the pop-up and still download the files).


Pilot Site Groundwater Water Level, Weather and Sampling Data

Dropbox Links to obtain data:

Click here to access ENWRA's Ashland, Oakland and Firth groundwater data folders. Dropbox is free for users but when downloading data, please save to your computer hard drive (choose direct download) so as to not fill up space on your personal dropbox account (300 MB).


ENWRA Archive

Click here to access ENWRA's Archive data folders prepared by Dana Divine of the Conservation and Survey Division (CSD) of the School of Natural Resources at Univerity of Nebraska-Lincoln in 2011 (includes some additional archived sources gathered to-date). Dropbox is free for users but when downloading data, please save to your computer hard drive (choose direct download) so as to not fill up space on your personal dropbox account (Warning files total 5.7 GB). It is recommended you download the access database and then return to the Dropbox for copies of the PDF files associated with your search. You can select "no thanks" to the sign-up for a Dropbox account and still download the files (Dropbox no longer works in Internet Explorer browser).

ENWRA Archive Access Database Image


Secondary Bedrock Aquifer Sampling and Age-Dating Project (Water Sustainibility Fund #4125)

The following USGS online publication was approved for release and has been made available to the public: USGS Scientific Investigations Report 2021–5055 Suggested citation: Hobza, C.M., and Flynn, A.T., 2021, Groundwater quality and age of secondary bedrock aquifers in the glaciated portion of eastern Nebraska, 2016–18: U.S. Geological Survey Scientific Investigations Report 2021–5055, 42 p. This publication is available online only (https://doi.org/10.3133/sir20215055).

Click here for a link to a presentation of the results from December 9, 2020. An additional talk was presented at the March 2, 2021 NRD Water Programs conference.


ENWRA Meetings and Presentations

2021 Agendas, Minutes

2021 Technical Committee Meeting Minutes PDF Download (PDF, 890 KB)

 

Minutes from Previous Years

2020 Minutes PDF Download (PDF, 110 KB)

2019 Minutes PDF Download (PDF, 2.2 MB)

2018 Minutes PDF Download (PDF, 480 KB)

2017 Minutes PDF Download (PDF, 117 KB)

2016 Minutes PDF Download (PDF, 209 KB)

2015 Minutes PDF Download (PDF, 228 KB)

2014 Minutes PDF Download (PDF, 361 KB)


Video (click the images to play the videos, see Projects tab for more)

Water Vision - Mapping Eastern Nebraska Aquifers with the Heliborne Electromagnetic Survey

Survey

Ashland

This shows inverted HEM data from the Ashland pilot study site. The white areas are where data has been removed to provide a cross-sectional view. The starting viewpoint is to the north. The Todd Valley is represented by red in the upper left hand corner and the glacial till uplands near Gretna by blue in the upper right hand corner.

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Firth

This is the Firth voxel model generated from inverted HEM data. Red zones are areas having resistivity values greater than or equal to 80 ohm-meters. The semi-transparent layer represents ground surface, and the black columns represent test holes. The starting viewpoint is to the northwest. The two red areas likely correspond to the edges of a paleovalley aquifer.

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Oakland

This is the Oakland voxel model generated from inverted HEM data. Red zones are areas having resistivity values greater than or equal to 80 ohm-meters. The semi-transparent layer represents ground surface, and the black columns represent test holes. The starting viewpoint is to the north. The red swath coincides with sand and gravels associated with Logan Creek.

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