Title: | Application of SWAT in the evaluation of salmon habitat remediation policy |
Authors: | Whittaker, G |
Year: | 2005 |
Journal: | Hydrological Processes |
Volume (Issue): | 19(3) |
Pages: | 839-848 |
Article ID: | |
DOI: | 10.1002/hyp.5615 |
URL (non-DOI journals): | |
Model: | SWAT |
Broad Application Category: | hydrologic and pollutant |
Primary Application Category: | model and/or data interface |
Secondary Application Category: | pollutant cycling/loss and transport |
Watershed Description: | Columbia Plateua region (U.S. Northwest; Washington, Oregon, Idaho, Montana) |
Calibration Summary: | No calibration was performed; SWAT mean water yield estimates were found to adequately reflect observed means, but variance was underestimated (determined using a bootstrap-t method with 1,000 draws) |
Validation Summary: | |
General Comments: | SWAT 98.2 was interfaced with a type of linear programming model referred to as a data envelope analysis (DEA), which assumes that a farm operator's goal is to maximize profits. Two N fertilizer policies were evalulated: a 25% N rate reduction (gov. command & control) versus a 300% tax on N fertilizer (reflecting inelastic demand for N fert.). The command & control policy resulted in similar results as the tax incentive policy for some of the subwatersheds (USGS 8-digit watersheds), but was more costly in most of the subwatershed regions. The approach of interfacing SWAT with an economic model was stated to provide a much more comprehensive set of both environmental & economic indicators. |
Language: | English |
Keywords: | SWAT; environmental policy; data envelopment analysis |