The study of drainage patterns in tectonically active regions is conducive to the prediction of regional geomorphology. Subtle subsurface changes can be detected by drainage conditions and manifested in the form of drainage anomalies. The Satluj valley of Bilaspur, which is traversed by numerous faults in northwest Himalayan region, was selected to analyze the effect of active tectonics on drainage evolution. With the Persistent Scatterer Interferometric Synthetic Aperture Radar (PS-InSAR) technique, SENTINEL-1A data were used to estimate the active surface deformation between September 2015 and December 2020. The results show that the region between Barasar Thrust (BrT) and Main Central Thrust (MCT) is undergoing deformation of ±12 mm/yr. The Stream Power Incision Model (SPIM) was used to predict deformation patterns. To validate the tectonic activity generated by the drainage network, seismic b-values were calculated, indicating the accumulating stresses. This study shows the importance of drainage anomalies in tectonically active areas. When used in close combination with other seismotectonic parameters, drainage anomalies can be effective in delineating tectonically active regions.

Since the recorded historical period, the Kachchh Rift Basin (KRB) has encountered numerous moderate to large magnitude earthquakes. According to the series of seismicity research so far, there are several important points of debate regarding the tectonic history and evolution of the KRB, especially during the Quaternary period. Therefore, the main objective of the present research is to inspect and perceive the association amongst the strain build-up, earthquake provenance, landform evolution and progression as archived by the Quaternary deposits of the KRB. The previous studies demonstrated the evolutions of various landforms, such as the uplifted fluvial terraces, formation of the gorges, uplifted alluvial fan sequences, which can be ideally used to reconstruct the neotectonic history along active faults of KRB. Considering this, the analysis of the accessible and supportive data, including geochronology provided by earlier studies along with some new dataset for a superior knowledge on the Quaternary tectonic forces prevailing in the KRB, have been carried out. Furthermore, we also emphasized the differences and directions for future potential research issues. The observations of variability in uplift rates across the various active faults in the KRB suggest a complex geological history during the Quaternary period. The results show that the vertical uplift rate along the significant active faults range from 0.8 to 2.8 mm/yr, demonstrating the variable tectonic stress regime prevailing in the KRB. The uplift rates constricted from geomorphic and chronological aspects suggest that the tectonic movements within the Kachchh intraplate region is regulated by the fault segments and the present tectonic stress field is in accordance with the encompassing tectonic stress field associated with the northward movement of the Indian plate corresponding to the Eurasian plate.