Assessment of Sustainable Yield of Karst Water in Huaibei, China

Dan Yin, Longcang Shu, Xunhong Chen, Zhenlong Wang, Mokhatar Eisa Mohammed

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

This paper presents the assessment of sustainable yield in the Huaibei karst water area of Anhui province, China. A review of sustainable yield definition is introduced first in this paper, and sustainable development in karst areas is more difficult due to the complicated hydrogeologic conditions. General hydrogeology of the study area is provided to characterize hydraulic connections between the karst aquifer and an overlying porous aquifer. Groundwatedepends on the shallow porous water. A "critical water level" is proposed in this study to assess the sustainable yield, and it is determined by the historical exploitation data which represent the relationship between the karst water and the shallow porous water uses. A three layer Artificial Neural Network (ANN) model is used to understand the complex relationship of the karst water level and its influencing factors. Precipitation, exploitation and water level of latest period are chosen as the input nodes, seasonal records of water level are simulated by the ANN model. The sustainable yield is calculated by the trail-and-error adjusting method, and is equal to the pumping rate when the "critical water level" is maintained. The rate of 30.05 MCM/a is the sustainable yield for the Huaibei karst area in 2008, and it is less than the real pumping rate of 35.92 MCM/a. This assessment is meaningful to the management for the Huaibei karst water.

Original languageEnglish (US)
Pages (from-to)287-300
Number of pages14
JournalWater Resources Management
Volume25
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • ANN
  • Groundwater
  • Huaibei karst area
  • Sustainable yield

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

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