Аннотация:Self potential (SP) method was used to study archaeological Alexandrovsky settlement, filtration anomaly and diffusion-absorption (DA) anomaly. Electrical resistivity tomography (ERT) data allowed estimating layered structure, lithology of layers and helped to prove DA origin of SP anomaly. Quantitative interpretation of filtration anomaly gave derelict spring yield estimation that could be used for water supply of the settlement in old days.