UNL irrigation engineer and interim director of the Nebraska Water Center Suat Irmak leads the Nebraska Agricultural Water Management Network (NAWMN) that began in 2005.

Stephen Reichenbach (from left), Xin Dong, Mehmet Can Vuran and Suat Irmak are working on a project to develop wireless underground sensor networks to give agricultural producers real-time information about soil moisture and changing conditions.

Larkin Powell, of UNL's School of Natural Resources, leads a Nebraska Water Center workshop for students on the elements of an effective poster. The idea is to help students-especially grad students-create more attractive and effective posters. This is the second time the workshop has been offered and Powell has been the presenter with assistance from Dee Ebbeka, graphic design expert. The invitation for this event was extended to students of all Nebraska Water Center affiliated faculty. This year's event was Sep 13 in Hardin Hall. (Lorrie Benson photo).

The Niobrara River as it looks just east of Valentine looking south from the Cowboy Trail bridge.

Water and natural resources tour participants listen to a lecture from retired UNL geologist Bob Diffendal on the 2012 tour.

UNL Extension Educator Lindsay Chichester (right) explains interactive I-pad applications at Husker Harvest Days to Nebraska Agriculture Secretary Greg Ibach and Governor Dave Heineman.

At north Omaha's N.P. Dodge Park, Graham Herbst of the Nebraska Forest Service discusses how the flood killed and damaged trees during the 2011 Missouri River flood.

Retired UNL Professor Bob Diffendal talks about the significance of geologic outcroppings visiblealong the Steamboat Trace Trail near Peru on the 2012 Water and Natural Resources Tour.

2012 Water and Natural Resources Tour participants look at lingering flood damage and erosion to fields at Lee Valley Farms near Tekamah.

Snake River Falls near Valentine

Western Nebraska's Wildcat Hills

Courthouse and Jailhouse rocks in western Nebraska

Drop tubes on a typical center pivot irrigation system throw-off a rainbow effect

The Republican River near Alma, Nebraska

A winter view of the Republican River near Red Cloud, Nebraska

The Platte River near Ashland, Nebraska

Windmills, that once powered irrigation wells, dot Nebraska's landscape

Picturesque Smith Falls on the Niobrara River

Separations chemist Dave Cassada draws a water sample at the UNL Water Sciences Laboratory.

The simple beginnings of large-scale irrigation in drought-stricken central Nebraska in the 1930's. Rapid booms in irrigation, driven by expanding technology, were seen again in the 1950's, 1970's and beyond.

Students from the Aurora Schools study a Nebraska Water Map.

Rachael Herpel demonstrates groundwater concepts at "Sunday with a Scientist," Morrill Hall (03/21/10).

An outcropping of the Ogallala Aquifer can be seen on the banks of the Niobrara River near Valentine

Water rushing over the spillway of Pathfinder Dam in central Wyoming

Water rushes through Gavin's Point Dam, near Yankton, South Dakota, during the great Missouri River flood of 2011.

Nearly a year after the 2011 Missouri River flood, sand still covers a city park on the banks of the river in Decauter.