Next Article in Journal
Study on the Assessment Method of the Impact on Hydrological Safety of Riverside Pit-Ponds along a Dike
Previous Article in Journal
Dew Point Temperature Estimation: Application of Artificial Intelligence Model Integrated with Nature-Inspired Optimization Algorithms
Article Menu

Export Article

Open AccessArticle
Water 2019, 11(4), 743; https://doi.org/10.3390/w11040743

Watershed Characterization and Hydrograph Recession Analysis: A Comparative Look at a Karst vs. Non-Karst Watershed and Implications for Groundwater Resources in Gaolan River Basin, Southern China

1
School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
2
Geological Survey of China University of Geosciences, Wuhan 430074, China
3
Department of Minerals and Petroleum Engineering Kaduna Polytechnic, P.M.B 2021 Kaduna State, Nigeria
*
Author to whom correspondence should be addressed.
Received: 24 February 2019 / Revised: 27 March 2019 / Accepted: 2 April 2019 / Published: 10 April 2019
(This article belongs to the Section Hydrology)
  |  
PDF [9116 KB, uploaded 10 April 2019]
  |  

Abstract

Karst watersheds are often treated as non-karst watersheds that can lead to several hazards. Hence, how do karst watersheds differ from non-karst watersheds and what are the effects of karstification on groundwater availability and quality? In this study, we contrast between a karst and non-karst watershed by elucidating their geomorphological peculiarities and potential impact on spatio-temporal availability and quality of groundwater. GIS morphometric mapping and hydrograph recession analysis are applied to map the watershed features and estimate hydrograph recession coefficient to define the groundwater drainage characteristics as well as the influence of karst drainage attributes (KDA). Furthermore, we characterize streamflow components based on the hydrograph recession limbs (segments) and infer their contributing geomorphological factors. Results show that the karst watershed has higher recession coefficients for successive recession limbs. Consequently, it drains larger volumes of groundwater primarily due to the KDAs, which transmit interflow and groundwater flow more rapidly through large cavities to springs as well as stream channels. The KDAs generate what we term karst drainage flow (KDF), defined by the second recession limb which has high recession coefficient as the first limb (overland flow) and strongly contrasts with the non-karst watershed from visual and ANOVA analysis. The effect is that karst aquifer yield over time is significantly lower and highly exposed to pollution compared to the non-karst aquifer. Consequently, sustainable water management practices should be adopted to ensure the availability and safety of groundwater reserves. View Full-Text
Keywords: karst; watershed; hydrograph recession analysis; GIS; groundwater karst; watershed; hydrograph recession analysis; GIS; groundwater
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Jakada, H.; Chen, Z.; Luo, M.; Zhou, H.; Wang, Z.; Habib, M. Watershed Characterization and Hydrograph Recession Analysis: A Comparative Look at a Karst vs. Non-Karst Watershed and Implications for Groundwater Resources in Gaolan River Basin, Southern China. Water 2019, 11, 743.

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.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top