Rain and irrigation calculators

Use the Extreme weather events tool to help assess heat and frost damage. The tool uses data from the department's extensive weather station network to map air temperatures, relative humidity, dew point and more.

Hydro Guide is an interactive map used to explore surface-water flowlines, farm dams and lakes, land surface contours and terrain slope within the south-west WA agricultural region.

Use the Irrigation calculator for broad guidance on the water requirements of commercial crops produced in Western Australia based on average weather data from the past 25 years and several variables.

The potential yield tool uses seasonal rainfall and decile finishes, calculated from historical data, to calculate the maximum wheat yield possible in the absence of any other constraints.

Rainfall to Date graphs show the amount of rainfall accumulated from the start of the grain growing season and can be used as a seasonal decision-making tool.

The Soil water tool is used to provide an approximate of the amount of water accumulated in soil from the start of summer through to the grain growing season.