Evapotranspiration Resources

Et map

Average of Past Seven Days Potential Evapotranspiration
(in inches)


Previous One-Day Potential Evapotranspiration
(in inches)

Check the High Plains Climate Center's Web site for local, regional, and national climate data resources you can use when planning for your agricultural operation.

Crop Water Use by Plant Growth Stage

These charts can be used with readings from an ETgageĀ® or other ET reference. To use the chart, first identify the change in the ET rate across the horizontal row and then identify the current growth stage in the left column. Follow the two columns to the point where they intersect to identify the ET rate to use in your irrigation scheduling. When planning irrigation, account for soil moisture, precipitation, weather conditions, and the ET rate for growth stage of your crop.

Estimating Growth Stage

Each of the Crop Growth Stage Charts listed above also includes illustrations of the growth stages. For more detailed information, see these resources: