| Abstract: | Although several sophisticated nonpoint pollution models exist, few are available that are easy to use, cover a variety of conditions, and integrate a wide range of information to allow managers and planners to assess different control strategies. Here, a straightforward pollutant input accounting approach is presented in the form of an existing model (WATERSHED) that has been adapted to run on modern electronic spreadsheets. As an application, WATERSHED is used to assess options to improve the quality of highly eutrophic Delavan Lake in Wisconsin. WATERSHED is flexible in that several techniques, such as the Universal Soil Loss Equation or unit-area loadings, can be used to estimate nonpoint-source inputs. Once the model parameters are determined (and calibrated, if possible), the spreadsheet features can be used to conduct a sensitivity analysis of management options. In the case of Delavan Lake, it was concluded that, although some nonpoint controls were cost-effective, the overall reduction in phosphorus would be insufficient to measurably improve water quality.A straightforward pollutant input accounting approach is presented in the form of an existing model (WATERSHED) that has been adapted to run on modern electronic spreadsheets. As an application, WATERSHED is used to assess options to improve the quality of highly eutrophic Delavan Lake in Wisconsin. WATERSHED is flexible in that several techniques, such as the Universal Soil Loss Equation or unit-area loadings, can be used to estimate nonpoint-source inputs. Once the model parameters are determined (and calibrated, if possible), the spreadsheet features can be used to conduct a sensitivity analysis of management options. In the case of Delavan Lake, it was concluded that, although some nonpoint controls were cost-effective, the overall reduction in phosphorus would be insufficient to measurably improve water quality. |
| Genre: | Article |
| ProdID: | 70015396 |
| Citation Author: | Walker, J. F.; Pickard, S. A.; Sonzogni, W. C. |
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| Citation End Page: | 147 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Water Resources Bulletin |
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| Citation Number Of Pages: | 9 |
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| Citation Publisher: | American Water Resources Association |
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| Citation Search Results Text: | Spreadsheet WATERSHED modeling for nonpoint-source pollution management in a Wisconsin basin; 1989; Article; Journal; Water Resources Bulletin; Walker, J. F.; Pickard, S. A.; Sonzogni, W. C. |
| Citation Start Page: | 139 |
| Citation Volume: | 25 |
| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Spreadsheet WATERSHED modeling for nonpoint-source pollution management in a Wisconsin basin; 1989; Article; Journal; Water Resources Bulletin; Walker, J. F.; Pickard, S. A.; Sonzogni, W. C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1111/j.1752-1688.1989.tb05674.x |
| Date Other: | Sun, 1 Jan 1989 00:00 -0600 |
| Publisher: | American Water Resources Association |
