3125 Portia St
PO Box 83581
Lincoln, NE 68501
402.476.2729

kcameron_enwra@lpsnrd.org

 

News

The 2018 Airborne Electromagnetic Survey (AEM) Flights are complete! The Lower Elkhorn NRD and Nemaha NRD chapter reports are now available. You can also click here for an updated location map of the 2018 flights. Be sure to visit our other AEM tabs for additional AEM results and project descriptions. WARNING! A Google Earth Pro update in early 2019 rendered the image links in the older .kmz files inoperable (impacts 2014-2015 AEM flight deliverables only). Please replace any .kmz files you may have downloaded prior to April 2019 from our 2015 AEM and 2014 LENRD AEM website tabs with the current posted versions.

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 2018 compiled datasets and graphs (168 MB).

 

 

Calendar

ENWRA's Annual Meeting was held January 29, 2019 at the Foundry (14th and P St.) in Lincoln - click here for the minutes. ENWRA's next spring technical meeting is planned for June 17, 2019 at 10 am at the Lower Elkhorn NRD in Norfolk, NE.

 

 

Lower Elkhorn . Lewis & Clark . Nemaha . Papio-Missouri River . Lower Platte North . Lower Platte South

2018 Airborne Electromagnetic (AEM) Surveys

The summer 2018 AEM flights are now complete! The six eastern Nebraska Natural Resources Districts (NRDs) conducted AEM flights this June through late July 2018 using Water Sustainability Fund (WSF) grant dollars awarded in November 2017 ("https://nrc.nebraska.gov/water-sustainability-fund-0").

The Lower Platte North, Lower Platte South, Papio-Missouri River, Lewis and Clark, Lower Elkhorn, and Nemaha NRDs each had a mix of the following types of surveys in eastern Nebraska:

Click here for a link to download the 2007-2016 Existing Areas Flown using AEM survey in Eastern Nebraska in Google Earth Format (1.71 MB, areas depicted may not be all inclusive).

Click here for a link to download the full set of 2018 AEM survey Flight Lines (1.6 MB, lines depicted do not include where potential interferences may need to be cut from the data).You can also click here for a simplified street map with the 2018 flight line locations.

The preflight work was very critical the success of the AEM survey and included the following planning activities: mapping out flight lines to avoid infrastructure and potential interferences (approximately 11,000 line kilometers/6,835 miles), equipment/personnel mobilization, helicopter fueling and ferrying logistics, background data gathering, submission of news releases to the media and general public, and contracting.

Click here for a link to Omaha KMTV Channel 3's July 2, 2018 news coverage at the Wahoo airport. Click here for video footage of the equipment in flight just outside of the Scribner airport. Click here for a link to News Channel Nebraska's July 17, 2018 news coverage at the Pender airport.

The first chapter report providing the survey results within the Lower Elkhorn NRD was completed on December 31, 2018. Download links for the LENRD report are available on this page see below. Presentations and final chapter style reports for the remaining NRDs are scheduled for completion in staggered fashion between now and December 2019.

Lower Elkhorn NRD 2018 AEM Results

Documents

“Airborne Electromagnetic Mapping and Hydrogeologic Framework of Selected Regions of the Eastern Nebraska Water Resources Assessment Area” Chapter on the Lower Elkhorn Natural Resources District.

PDF Report Text (PDF, 14 MB)

PDF Appendix 1 - 2D Profiles and Surfaces (PDF, 272 MB)

PDF Appendix 2 - 3D Images (PDF, 24 MB)

PDF Appendix 3 - Data Deliverables (file types vary, 6.71 GB)

Datasets

Google Earth Datasets:

The interpreted results for the 2018 AEM flights have been provided in Google Earth format. You can download the free version of Google Earth Pro by clicking here.

*Click here for a link to download the Google Earth datasets from ENWRA's Dropbox.

The link above provides ".kmz" files that will show the 2018 AEM flight lines "as flown" and where data was chopped out from interferences as well as ".kmz" files that show attributed data dots in Google Earth you can click on. The attributed ".kmz" files are provided in 8 parts (broken up for faster viewing). There are 153 associated image files (300 MB) linked to the data dots, plus a separate folder for the tighter spaced lines flown in the Pierce, Nebraska area with 45 associated image files (83 MB) and a "PierceCoBlock_Interp_v5.kmz" file.

You can select "no thanks" to the sign-up for a Dropbox account and still download the files (upper right, download button shown below). You must have Google Earth installed on your computer before downloading or opening the .kmz Google Earth dataset files. If you already have a Dropbox account, please choose direct download to your computer so you do not fill up space on your personal Dropbox.

Please follow the instructions in the "GoogleE_README.pdf" PDF file on Dropbox here AND save the downloaded files with the same exact file structure as shown on the Dropbox onto your computer's C drive. Google Earth will look here on your hard drive: C:\LENRD18_Profiles\ or here: C:\Pierce_Profiles\ for every profile image when you touch a link on a data dot - see example image below. An easy way is to do this is to create folders named "LENRD18_Profiles" and/or "Pierce_Profiles" directly on your C drive, download and unzip the Dropbox files wherever your browser typically puts downloaded files, and then cut, copy or drag all the downloaded, unzipped files to those corresponding LENRD18_Profiles and Pierce_Profiles folders you created on your C drive.

NOTE: You can view flight lines from some mobile devices if you have Google Earth but you need to use a computer to see the data and hot linked profile images. Warning these Google Earth files, if downloaded, may use up to 0.3 GB of your mobile data.

Nemaha NRD 2018 AEM Results

Documents

“Airborne Electromagnetic Mapping and Hydrogeologic Framework of Selected Regions of the Eastern Nebraska Water Resources Assessment Area” Chapter on the Nemaha Natural Resources District.

PDF Report Text (PDF, 14 MB)

PDF Appendix 1 - 2D Profiles and Surfaces (PDF, 70 MB)

PDF Appendix 2 - 3D Images (PDF, 35 MB)

PDF Appendix 3 - Data Deliverables (file types vary, 2.25 GB)

Datasets

Google Earth Datasets:

The interpreted results for the 2018 AEM flights have been provided in Google Earth format. You can download the free version of Google Earth Pro by clicking here.

*Click here for a link to download the Google Earth datasets from ENWRA's Dropbox.

The link above provides ".kmz" files that will show the 2018 AEM flight lines "as flown" and where data was chopped out from interferences ("retained") as well as ".kmz" files that show attributed data dots in Google Earth you can click on. The attributed ".kmz" files are provided in two parts: one for the grid area flown near Tecumseh, Nebraska and a second for the block flight with tighter spaced lines around Shubert, Nebraska. There are 76 associated image files (52 MB) linked to the data dots provided in the .kmz files.

You can select "no thanks" to the sign-up for a Dropbox account and still download the files (upper right, download button shown below). You must have Google Earth installed on your computer before downloading or opening the .kmz Google Earth dataset files. If you already have a Dropbox account, please choose direct download to your computer so you do not fill up space on your personal Dropbox.

Please follow the instructions in the "GoogleE_README.pdf" PDF file on Dropbox here AND save the downloaded files with the same exact file structure as shown on the Dropbox onto your computer's C drive. Google Earth will look here on your hard drive: C:\NNRD18_Profiles for every profile image when you touch a link on a data dot - see example image below. An easy way is to do this is to select direct download at the upper right from the Dropbox link and then go unzip the Dropbox file wherever your browser typically puts downloaded files (right click and hit extract). Once the folder has been unzipped then cut, copy or drag the unzipped file folder called "NNRD18_Profiles" directly onto your C drive.

NOTE: You can view flight lines from some mobile devices if you have Google Earth but you need to use a Microsoft Windows computer to see the data and hot linked profile images.