Spatially Distributed Sediment and Nutrients Loading from the Upper Pearl River Watershed

Author(s): Parajuli, P.

Sediment and nutrients loading from the non-point sources of agricultural and non-agricultural activities contribute to water quality degradation. Developing sediment and nutrients Total Maximum Daily Loads require quantifying pollutant load contribution from each potential source. The determination of pollutants reduction strategies from each source is required to meet applicable water quality standards. The watershed-scale evaluation of the effects of the agricultural, and pasture management practices on water quality can be estimated using watershed water quality models.

The objective of this research was to evaluate spatially distributed sediment and nutrients loading from the Upper Pearl River watershed (UPRW-7,885 km2) in east-central Mississippi using modeling approach. Nutrient sources from agricultural and non-agricultural activities of the UPRW were analyzed and model inputs were developed. The Soil and Water Assessment Tool model was calibrated, and validated in the UPRW to evaluate sediment, and nutrients loading. The model results were evaluated against monthly observed water quality values using coefficient of determination (R2), and Nash-Sutcliffe Efficiency Index (E).

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Technical Sessions

Session I Sedimentation
Session II Weather/Climate
Session III Coastal Resources
Session IV Surface Water Management
Session V Wetlands
Session VI Education
Session VII Management/Planning
Session VIII Wetlands
Session IX Delta Groundwater
Session X Nutrients
Session XI Delta Water Resources
Session XII Ports

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