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| Autors principals: | , , , , , |
|---|---|
| Format: | Recurso digital |
| Idioma: | anglès |
| Publicat: |
Zenodo
2025
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| Matèries: | |
| Accés en línia: | https://doi.org/10.5281/zenodo.15748922 |
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- <p>Abstract:</p> <p><span>Agencies must meet pollutant loading targets for average present conditions and extreme events.<span> </span>We applied the Watershed Management Optimization Support Tool suite to determine least-cost management solutions to meet sediment and total phosphorus (TP) loading targets in the Upper Soldier Creek, Kansas, USA,.<span> </span>Under average precipitation, upland TP loading targets could be met with grassed swales for urban area runoff and contouring for agricultural area runoff.<span> </span>For a wet year, the same target could be met, but with a switch to a sand filter with underdrain BMP for the urban runoff.<span> </span>Simulations of BMP solutions for 14 alternative future climate scenarios exhibited exceedances of both annual and daily TP loading targets from Total Maximum Daily Loads (TMDLs).<span> </span>We expanded the set of BMPs to further address sediment and TP source reductions; these BMPs included stream bank stabilization (physical plus riparian restoration) and two-stage channel designs.<span> </span>For both TP and total suspended solids (TSS), upland loading targets could not be met under any precipitation conditions.<span> </span>An optimization scenario that simulated the routing of flows in excess of those treated by the upland BMPs to an off-channel treatment wetland allowed TMDLs to be met for an average precipitation year.<span> </span></span></p> <p><span>Supplemental Materials 1-9</span></p>