Parameter Estimation and Assessment of Infiltration Models for Madjez Ressoul Catchment, Algeria

Evaluation and modeling of soil water infiltration are essential to all aspects resources management the design hydraulic structures. Nonetheless, research focused on experimental studies rates in arid semi-arid regions under unknown boundary conditions remains minimal. This paper investigates characteristics spatial variability over a rural basin Algeria. The experiments were conducted using portable double-ring infiltrometer filled at an equal volume approximately 100 L for each 25 catchment locations. Soil moisture contents proximity test location evaluated laboratory as per standard NF P94–050 protocol. results used produce curves three statistically fitted models, namely Horton, Kostiakov, Philip models. reliability models was assessed four performance criteria. statistical regressions suggest that Horton model is most suitable assess rate with mean coefficients Nash = 0.963, CC 0.985, RMSE 1.839 (cm/h), Bias 0.241. superiority suggests initial final rates, primarily affected by type, moistures, land cover, important predictors process Madjez Ressoul catchment. also infer applicability other different types undeveloped soils study area requires advanced field investigations. finding will support understanding hydrologic processes basins, especially advising crop irrigation schemes methods managing recurring flood drought country.