| Title: | A multi-model, multiple watershed examination of in-stream bacteria modeling |
| Authors: | Iudicello, J.J. and D.A. Chin |
| Year: | 2013 |
| Journal: | International Journal of Environmental Research and Public Health |
| Volume (Issue): | 139(5) |
| Pages: | 1-33 |
| Article ID: | |
| DOI: | 10.1061/(ASCE)EE.1943-7870.0000670 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic and pollutant |
| Primary Application Category: | pathogen fate and transport |
| Secondary Application Category: | model and/or data comparison |
| Watershed Description: | Little River Experimental subwatersheds I (49.9 km^2), J (22.1km^2,) K (16.7km^2), and O (15.9km^2) in south central Georgia, U.S. |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | |
| Abstract: | Excessive bacteria levels are a major water-quality problem in U.S. water bodies, and this study looked at the use of watershed-scale computer models to predict in-stream bacteria concentrations. The study site was the Little River Experimental Watershed (LREW) in Tifton, GA, and fecal coliform fate and transport models were built for four of the LREW subwatersheds over the period Jan 1996 - Dec 2002. Three models were examined: HSPF, SWAT, and the Characteristic Concentration (CC) model based on the principles of hydrograph separation. It was found that the most sensitive HSPF and SWAT water-quality parameters were associated with the in-stream bacteria processes while parameters relating to terrestrial activity varied from sensitive to completely insensitive. Model performance was evaluated by the Nash-Sutcliffe statistic, and HSPF, SWAT, and the CC model performed comparably, while showing distinct performance
capabilities. |
| Language: | English |
| Keywords: | HSPF, SWAT, Bacteria, Fecal Coliform, Modeling, Water Quality |