Estimation of Groundwater Recharge Using Water Balance Coupled with Base-Flow-Record Estimation and Stable-Base-Flow Analysis

doi:10.1007/s00254-006-0561-1

CNU IR > College of Sustainable Environment and Recreation > Dept. of Recreation and Health-Care Management > Periodical Articles > Item 310902800/22182

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/22182

Title:	Estimation of Groundwater Recharge Using Water Balance Coupled with Base-Flow-Record Estimation and Stable-Base-Flow Analysis
Authors:	Cheng-Haw Lee Wei-Ping Chen Ru-Huang Lee
Contributors:	休閒保健管理系
Keywords:	Groundwater recharge Water balance Base-flow-record estimation Stable-base-flow analysis Base-flow index
Date:	2006-10
Issue Date:	2010-01-11 11:24:19 (UTC+8)
Abstract:	In this paper, the long-term mean annual groundwater recharge of Taiwan is estimated with the help of a water-balance approach coupled with the base-flow-record estimation and stable-base-flow analysis. Long-term mean annual groundwater recharge was derived by determining the product of estimated long-term mean annual runoff (the difference between precipitation and evapotranspiration) and the base-flow index (BFI). The BFI was calculated from daily streamflow data obtained from streamflow gauging stations in Taiwan. Mapping was achieved by using geographic information systems (GIS) and geostatistics. The presented approach does not require complex hydrogeologic modeling or detailed knowledge of soil characteristics, vegetation cover, or land-use practices. Contours of the resulting long-term mean annual P, BFI, runoff, groundwater recharge, and recharge rates fields are well matched with the topographical distribution of Taiwan, which extends from mountain range toward the alluvial plains of the island. The total groundwater recharge of Taiwan obtained by the employed method is about 18 billion tons per year.
Relation:	Environmental Geology 51(1) ： p.73-82
Appears in Collections:	[Dept. of Recreation and Health-Care Management] Periodical Articles

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