Dept of Crop & Soil Sciences
Cornell University

Estimating Critical Phosphorous Loading Areas in Six Mile Creek Watershed - Equations

The Contributing Area/Dispersal Area - Export Coefficient Model (CADA-ECM) was used to estimate
critical non-point source phosphorous loading areas in Six Mile Creek watershed in Tompkins County, NY.

Below are the mathematical equations used to model Six Mile Creek Watershed.


Equations
Equation 1: Export Coefficient Model (ECM) Equation
Equation 2: Contributing Area (CA) Equation
Equation 3: Dispersal Area (DA) Equation
Equation 4 & 5: Normalized Topographic Index (NTI) & Buffer Index (NBI) Equations
Equation 6: Complete CADA-ECM Equation


April 2003 - April 2004

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