3125 Portia St
PO Box 83581
Lincoln, NE 68501
402.476.2729

kcameron_enwra@lpsnrd.org

 

News

Groundwater elevation, weather station data and sampling results for ENWRA's 3 pilot study sites are now availiable under the Media/Downloads Tab. Click here for a link to download the 2008 to 2016 compiled datasets and graphs (168 MB).

Nebraska NRDs conducted additional Airborne Electromagnetic Survey (AEM) flights in July and early August 2016. Click here to learn more.

Google Earth files have been produced for the ENWRA 2007 Pilot Study Sites and the 2009 Sprague area Airborne Surveys. Click here for a link to download the data.

The October 2014 and April 2015 ENWRA AEM survey reports are available under the 2015 AEM tab (Volume 1 and 2 Appendix 4 updates made 9/24/15).

The Dwight-Valparaiso-Brainard area AEM data is now available on-line. Click here to download the report and use the interactive map from the Lower Platte South NRD website.

The October 2014 Lower Elkhorn AEM Grid Survey is complete and available under the 2014 LENRD AEM tab.

 

Calendar

ENWRA's Spring meeting was held April 18, 2017 from 1:30 to 3:30 pm at the Lower Platte North NRD in Wahoo, Nebraska. Click here to download the minutes.

Media and Downloads

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)

 

 

 


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)

 

 


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)

 

 


SurveyUSGS Scientific Investigations Report 2011-5228

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

PDF Download (PDF, 14 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)

 

 


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)

 


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)

 

 

 


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)

 


Survey

USGS Open File Report 2010-1288

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)

 

 


Survey

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). 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.

Survey


Survey

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)

 


Google Earth AEM Data Files (See 2014 2015 tabs for recent data)

Lower Platte South Google Earth Deliverable for Sprague area

Survey

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 the ENWRA 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 (168 MB)


ENWRA Meetings

2017 Agendas and Minutes

January Agenda PDF Download (PDF, 84 KB)

January Minutes PDF Download (PDF, 100 KB)

April Agenda PDF Download (PDF, 80 KB)

April Minutes PDF Download (PDF, 94 KB)

Minutes from Previous Years

2016 Minutes PDF Download (PDF, 209 KB)

2015 Minutes PDF Download (PDF, 228 KB)

2014 Minutes PDF Download (PDF, 361 KB)


Video

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

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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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