Groundwater

Please welcome Jeremy Milander to Nebraska Extension. Jeremy will assume his new role as an Assistant Extension Educator in mid-April and will have specific responsibilities in the Bazile Water Management Area in northeast Nebraska. He will work with four Natural Resources Districts to develop an educational program aimed at stabilizing the nitrate concentration in ground water. Jeremy will also work with a stakeholder group to implement field demonstrations funded by a Nebraska Environmental Trust grant.

Have you ever wondered why groundwater nitrate maps show so much variation across Nebraska? Or why wells near to your own tested well have such different nitrate levels? The answer has three parts. Nitrate in groundwater varies from place to place because of differences in:

Nitrogen (N) budgeting, where accounting principles are applied to measured quantities of individual N sources, is one tool for understanding how long-term fertilizer-N use and irrigation contributes to nitrogen leaching. Here, we explore this tool by going through commonly-used conversions and calculations for N supply and nitrate-N leaching to account for changes in aquifer nitrogen contamination.

The City of Auburn, population 3,000, is located in southeast Nebraska, near the Little Nemaha River, approximately seven miles upstream of its confluence with the Missouri River. The City receives its drinking water from a wellfield located east of the community within an alluvial aquifer along the Little Nemaha River. The wellfield consists of 11 vertical wells averaging 45 to 50 feet below the ground's surface, pumping up to 150 million gallons per year.

Using high-tech instruments suspended from helicopters, Nebraska’s Natural Resources Districts are getting a new look at what lies below. Airborne electromagnetic (AEM) surveys use principles of electromagnetic induction to generate images of the subsurface. In the past ten years, more than 18,000 miles of AEM surveys were completed in the State: about 6,600 miles were flown in 2018 alone.

National Drinking Water Week is held in May each year to bring attention to important water quantity and quality issues and their relationship to drinking water supplies.  The attention to drinking water during that week provides an opportunity to learn more water resources in general and also serves a reminder to think about where your water comes from.

National Groundwater Awareness Week

Nebraska is a groundwater-rich state. Nebraska has one primary aquifer, the High Plains Aquifer, and seven secondary aquifers. These secondary aquifers supply water to more than 4000 active wells spread across 30 counties.

The Soil Health Nexus is excited to debut two new resources on the Soil Health Toolbox! Two Soil Health Nexus members, Francisco Arriaga, Associate Professor and Extension Specialist at the University of Wisconsin-Madison, and Anna Cates, Assistant Professor and State Soil Health Specialist at the University of Minnesota, recently published a long-awaited whitepaper exploring the connection between soil health and water quality.