Agricultural Water Management Network

Crop Water Use – Evapotranspiration (ET)

Log on or create an account to use our Online ETgage Tool for quick recording of and access to weekly ET (crop water use) readings.

NAWMN Resources

View weekly ETgage® data and local reference ET weather station data

Crop water use by growth stage for various crops

Publications: ETgage® & Watermark Sensors

Irrigation Trigger Levels for Various Nebraska Soils (chart)

Watermark Sensor Reading Calculator

Cropwatch ET Resources: Maps of potential evapotranspiration rates for the High Plains Region

Project Background

Videos on evapotranspiration gauges and sensors

  • Assembly and Placement of an Evaportranspiration Guage 
  • How to Assemble and Prepare Watermark Sensors 
  • How to Stage Crop Growth for Managing Crop Water Use
  • Installing Soil Moisture Sensors in the field 

NAWMN project

The NAWMN project is a system for testing cutting-edge technologies and creating a network with growers, UNL Extension, NRDs, NRCS, and crop consultants, and other interested partners, enables the adoption of water and energy conservation practices.

The article "Nebraska Agricultural Water Management DemonstrationNetwork (NAWMDN): Integrating Research and Extension/Outreach" that was published by Irmak et al., 2010  in the journal of the American Society of Agricultural and Biological Engineers presents background information for the network. The NAWMN project started in 2005 with about 15 farmer collaborators and has expanded to over 1400 collaborators in 2015.

The ETgage® is a tool that can be used to mimic evapotranspiration (ET) rates and this information can be utilized for irrigation management. The online ETgage tool gives collaborators an easy-to-use tool for recording readings. This online tool also provides quick, easy access to readings from a specific location.