FIEA: An android tool for sustainable furrow irrigation

Furrow irrigation performance is often constrained by limited field measurements and the reliance on desktop hydraulic models unsuitable for data-scarce environments. This study presents the Furrow Irrigation Evaluation App (FIEA), an Android-based tool that computes application efficiency (AE), runoff depth (RO), and deep percolation (DP) using simplified SCS hydraulic relationships. FIEA was validated against WinSRFR and SURDEV using published datasets and Monte-Carlo–generated scenarios. Results show high agreement for AE (R² = 0.92–0.99; NRMSE = 1.8–9.6 %) and RO (R² = 0.91–0.99), while DP showed lower correspondence (R² = 0.02–0.31) due to geometric simplifications. Sensitivity analysis identified inflow rate and furrow length as dominant drivers (|r| ≤ 0.62). By providing an offline, field-ready alternative to desktop models, FIEA enables rapid diagnosis of water losses and supports sustainable, climate-resilient irrigation management. Future improvements will refine DP estimation through enhanced geometric representation and sensor-integrated modelling.