This paper presents a newly developed tool for evaluating the hydraulic performance of a pressurised irrigation sprinkler distribution network. These systems are characterised by significant variability in the placement and size of water demand, as sprinklers, e.g., hose reel irrigators, are usually moving from place to place. Moreover, they are devices that take a lot of water in one place. This leads to many possible operating scenarios, and traditional simulation models alone are not capable of tackling this variation in possible operational scenarios. Thus, the paper’s authors developed a package (add-in) in the R programming language environment that can help to solve this task. Besides various tools in this package (R functions) allowing users to edit network parameters, run hydraulic simulations, and evaluate results in tables and graphs, specific modules for dealing with operation variability were also developed. The most significant of those is the generator of operating situations, which hydraulic simulation can subsequently evaluate. This means assessing whether the pressures and flows in the irrigation network allow the operation of the irrigators. Regarding the satisfaction of the required pressure in the hydrants, hydraulic situations, where the demand is more concentrated in some parts of the network, will be more problematic, especially if this happens in the end parts of the network. The presented software is intended to warn the irrigation system operator of such situations so that he avoids them, so the operation of an irrigation system works without problems (i.e., with sufficient pressure in the hydrants). The generator of the operation situations and evaluation of hydraulic analysis has been successfully tested on a large irrigation network.

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