Abstract: In this paper the Luota Karst Basin is taken as an example to verify the nonuniformity of karst water-bearing medium, and derive the recession equation of discharge as which can be used as a method to estimate the karst ground water resources. Based on the long-term observation of the water points in the studied area, analyses have been made on the recession of ground water flow, so as to elucidate some of the spatial characteristics of karst water occurrence, The method of recession analysi...