SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Hydrologic Modeling of Flow through Sinkholes Located in Streambeds of Cane Run Stream, Kentucky 
Authors:Palanisamy, B. and S. R. Workman 
Year:2015 
Journal:Journal of Hydrologic Engineering 
Volume:20(5) 
Pages: 
Article ID: 
DOI:10.1061/(ASCE)HE.1943-5584.0001060 
URL (non-DOI journals): 
Model:Karst SWAT 
Broad Application Category:hydrologic only 
Primary Application Category:karst effects 
Secondary Application Category:model comparison 
Watershed Description:115.6 km^2 Cane Run River, located in portions of Fayette and Scott counties, in northercentral Kentucky, United States 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:Hydrologic modeling of karst watersheds requires detailed information on geologic settings and hydrologic properties for efficient simulation of spring and streamflow hydrographs. In this paper, sinkholes located in the streambed of a karst watershed in Kentucky were conceptualized as orifices, and flow through these orifices was modeled as a function of sinkhole diameter. The karst flow components were incorporated in a soil and water assessment tool (SWAT), called KarstSWAT in this study. The KarstSWATwas able to reproduce the observed hydrographs better than the SWAT model in terms of both peak flow and hydrograph volume. Flow through a groundwater basin that is partly fed by the sinkholes and is discharged from a spring was estimated using a method called the successive summation routing algorithm (SSRA) in this study. The time series analysis of simulated spring flows showed that the quantity of water recharging the sinkholes was sufficient to reproduce the observed spring hydrographs. The proposed method could be adapted to karst watersheds dominated by sinkholes and to watersheds that drain water from sinkholes to springs. DOI: 10.1061/(ASCE)HE.1943-5584.0001060. © 2014 American Society of Civil Engineers. 
Language:English 
Keywords:Karst; Sinkholes; Recharge basins; Hydrologic models; Flow routing