These programs compare two distributions for their significant differences over time and space. Zscore is used with calibrated models and compares ditributions at measured times only. Zscore-No_Obs is used with uncalibrated models and compares distributions at all simulation times. Both programs can be used to compare two alternative BMPs, for example, the difference between zero tillage and filter stip in soil erosion. Please watch these videos to learn how to use the programs. https://www.youtube.com/watch?v=X6A90J1M_cQ https://www.youtube.com/watch?v=eMCzhWUra8M

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Risk is defined as the product of the probability of failure times the cost of failure. In this analysis, we calculate the risk of sediment loss with and without terracing. If the value of reducing sediment loss after terracing is greater than the cost of terracing, then one should do the terracing. https://www.youtube.com/watch?v=iKWI2f4Y7I8 https://www.youtube.com/watch?v=-E7wZfXuknM

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SWATCUP can be used to design BMP parameters. This example shows how to design filter strip width to minimize sediment, total nitrogen, and total phosphorous loss from the watershed. https://www.youtube.com/watch?v=WJN4LhXBAfU

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