This dataset provides the in-situ measurements used for the study “Retrieving soil moisture in bare and shallow vegetated areas in mountainous region using model-based decomposition of Sentinel-1 dual PolSAR data.” It includes the date of acqusition of samples, geographic coordinates (latitude and longitude) of sampling locations, soil moisture measurements obtained using a HydraGo probe, and associated terrain parameters such as slope angle and local incidence angle corresponding to each measurement point.