SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Estimation of soil cracking and the effect on surface runoff in a Texas Blackland Prairie watershed 
Authors:Arnold, J.G., K.N. Potter, K.W. King and P.M. Allen 
Journal:Hydrological Processes 
Volume (Issue):19(3) 
Article ID: 
URL (non-DOI journals): 
Model:SWAT (modified) 
Broad Application Category:hydrologic only 
Primary Application Category:preferential or crack flow, or other recharge method 
Secondary Application Category:hydrologic assessment 
Watershed Description:53.4 ha USDA-ARS Y-2 located near Riesal, Texas. 
Calibration Summary: 
Validation Summary:crack flow r2 = 0.84 surface runoff r2 = 0.87 
General Comments:A crack flow volume model was developed for the study that determines crack flow volumes as a function of crack potential, soil depth, and soil moisture. The model was able to capture the effects of winter soil swelling phenomena and 1998 fall recharge events, that resulted in a large reduction in crack flow volume (from 70 to 10 mm). Model comparisons performed versus measured crack flows & surface runoff. Includes graphical comparisons. 
Keywords:crack measurement; hydrologic model; vertisols; shrinking/swelling soils