The study analyzes the longitudinal profiles of 33 small basins in a sector of the northern coast of the Alboran Sea (Málaga-Granada, Spain) using the LE ratio (exponential logarithmic) and other models (Hack, Shulits, and Green). The LE ratio consistently achieved a linear correlation coefficient of R²≥0.95 (p<0.01) between the real profile and the evaluated model. The deviations identified knickpoints and other geomorphological anomalies with geological origins, such as faults, overthrusts, and lithologic contacts. High correlations were found between reductions in river gradients and regional flattening surfaces, as well as stepped levels at different altitudes in river profiles passing through steep areas. The results highlight the importance of considering these changes in river profiles for understanding the evolution of fluvial systems and their management.The study analyzes the longitudinal profiles of 33 small basins in a sector of the northern coast of the Alboran Sea (Málaga-Granada, Spain) using the LE ratio (exponential logarithmic) and other models (Hack, Shulits, and Green). The LE ratio consistently achieved a linear correlation coefficient of R²≥0.95 (p<0.01) between the real profile and the evaluated model. The deviations identified knickpoints and other geomorphological anomalies with geological origins, such as faults, overthrusts, and lithologic contacts. High correlations were found between reductions in river gradients and regional flattening surfaces, as well as stepped levels at different altitudes in river profiles passing through steep areas. The results highlight the importance of considering these changes in river profiles for understanding the evolution of fluvial systems and their management.