This study analyzes longitudinal river profiles to detect geomorphological anomalies, applying the method to a sector of the northern coast of the Alborán Sea (Málaga-Granada, Spain). The LE ratio (logarithmic exponential) is used as a geomorphological tool to adjust longitudinal fluvial profiles using an equation. The results allow assessing and quantifying anomalies and ruptures (knickpoints) with different origins. In this study, 33 small basins were analyzed using the LE ratio and other models (Hack, Shulits, and Green). The LE ratio provided a linear correlation coefficient of R² ≥ 0.95 (p < 0.05) between the real profile and the model. Deviations allowed identification of geological anomalies with morphological consequences: faults, thrusts, dips, and differences in lithologic contacts. High significance was found between reductions in river slope and regional flattening surfaces. Stepped levels at different heights were observed in the acceleration of the final river profile segments (mouth) that pass through cliff areas. The study highlights the importance of the LE ratio in detecting geomorphological anomalies, particularly in areas with complex geological structures. The method is effective in identifying knickpoints, which can be caused by geological factors such as faults, thrusts, and lithologic contacts. The results also show that human activities, such as road construction and land use changes, can significantly affect river profiles. The study concludes that the LE ratio is a reliable tool for analyzing river profiles and detecting geomorphological anomalies, providing valuable insights for landscape evolution and management. The findings contribute to understanding the relationship between geological structures, river profiles, and human impact on the landscape.This study analyzes longitudinal river profiles to detect geomorphological anomalies, applying the method to a sector of the northern coast of the Alborán Sea (Málaga-Granada, Spain). The LE ratio (logarithmic exponential) is used as a geomorphological tool to adjust longitudinal fluvial profiles using an equation. The results allow assessing and quantifying anomalies and ruptures (knickpoints) with different origins. In this study, 33 small basins were analyzed using the LE ratio and other models (Hack, Shulits, and Green). The LE ratio provided a linear correlation coefficient of R² ≥ 0.95 (p < 0.05) between the real profile and the model. Deviations allowed identification of geological anomalies with morphological consequences: faults, thrusts, dips, and differences in lithologic contacts. High significance was found between reductions in river slope and regional flattening surfaces. Stepped levels at different heights were observed in the acceleration of the final river profile segments (mouth) that pass through cliff areas. The study highlights the importance of the LE ratio in detecting geomorphological anomalies, particularly in areas with complex geological structures. The method is effective in identifying knickpoints, which can be caused by geological factors such as faults, thrusts, and lithologic contacts. The results also show that human activities, such as road construction and land use changes, can significantly affect river profiles. The study concludes that the LE ratio is a reliable tool for analyzing river profiles and detecting geomorphological anomalies, providing valuable insights for landscape evolution and management. The findings contribute to understanding the relationship between geological structures, river profiles, and human impact on the landscape.