With the combined profile method, the author inferred the existence of NE-trending and WE-trending fault structures in the logistics base of the namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Huanghua International Airport, with the former fault structure displacing the latter one. An analysis of ρs variability suggests that there exists strong shattering at the compounding place of the fault structures, which is thus the ideal position for underground water accumulation. IP sounding revealed the depth of the karst segment and the water accumulation degree. Drilling test at the anomaly point determined by geophysical exploration shows that the outflow of water has reached over 2 000 m3/d.namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />