Next Article in Journal
A Model Study of the Discharges Effects of Kaidu River on the Salinity Structure of Bosten Lake
Previous Article in Journal
Mass and Energy Balance Estimation of Yala Glacier (2011–2017), Langtang Valley, Nepal
Open AccessArticle

Hydrogeological Parameter Determination in the Southern Catchments of Taiwan by Flow Recession Method

Department of Resources of Engineering, National Cheng Kung University, Tainan 701, Taiwan
*
Author to whom correspondence should be addressed.
Water 2019, 11(1), 7; https://doi.org/10.3390/w11010007
Received: 3 December 2018 / Revised: 13 December 2018 / Accepted: 17 December 2018 / Published: 20 December 2018
(This article belongs to the Section Hydrology)
The understanding of hydrogeological characteristics and groundwater flow processes in aquifers is crucial for the determination of sustainable groundwater resource development as well as hydrological management and planning. In the past, information on hydrogeological characteristics was mainly acquired through point field measurement such as borehole geophysical techniques and field aquifer hydraulic testing. However, in view of the cost limitations and scale applicability of these methods, low-flow recession analysis techniques that utilize streamflow data can be used as alternative low-cost methods to reversely back-calculate hydrogeological parameters based on the hydrological processes by which groundwater from aquifers is naturally discharged to rivers. We chose Southern Taiwan as the study area for the estimation of the recession index (K), which is representative of catchment discharge behavior during both the dry and wet seasons, to determine seasonal differences in the aquifer flow regime and to estimate the following three hydrogeological parameters: hydraulic conductivity (k), specific yield (Sy), and transmissivity (T). Based on the field test reports of the locations of groundwater observational wells on the Chianan and Pingtung plains, the study area was divided into the Chianan sub-area (Zengwun, Yanshui, and Erren river basins) and the Kaoping sub-area (Kaoping, Donggang, and Linbian river basins). The estimation results of the present study were compared to the field test results. The results showed significant differences in the recession index K between the dry and wet seasons. Slight differences between the estimated hydrogeological parameters and the field test results were also observed for the two sub-areas because of differences in scale. Furthermore, regional differences in the estimation results were found to be consistent with the distribution of geological structures, which indicates a high degree of feasibility in the application of flow recession methods for catchment-scale hydrogeological parameter determination. View Full-Text
Keywords: hydrogeological parameters; low-flow recession; regional difference hydrogeological parameters; low-flow recession; regional difference
Show Figures

Figure 1

MDPI and ACS Style

Huang, C.-C.; Yeh, H.-F. Hydrogeological Parameter Determination in the Southern Catchments of Taiwan by Flow Recession Method. Water 2019, 11, 7.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop