Systems and methods provide for detection of one or more underground utilities. Radar waves and seismic waves of about the same wavelength are generated and communicated into a subsurface. Radar and seismic response signals resulting from communication of the radar and seismic waves into the subsurface are concurrently received. Data associated with the received radar and seismic response signals are stored. One or more underground utilities within the subsurface is/are detected using the stored data. The underground utilities may include metallic and non-metallic utilities.