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P-TRAP Phosphorus Transport Reduction App

The P-TRAP software allows a user to design different types of phosphorus removal structures based on site conditions, phosphorus absorbing material characteristics and structure parameters. The P-TRAP software allows users to explore different designs to meet performance goals for P removal amounts and material lifetime. A database of P absorbing material characteristics is included based on previous laboratory experiments.

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UNSATCHEM

Simulates water, heat, carbon dioxide and solute movement in one-dimensional variably saturated media.

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SWMS-3D

Simulates water and solute movement in three-dimensional variably saturated media.

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SWMS-2D

Simulates water and solute movement in two-dimensional variably saturated media.

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STANMOD

Computer Software for Evaluating Solute Transport in Porous Media Using Analytical Solutions of the Convection-Dispersion Equation.

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RETC

Analyzes the hydraulic properties of unsaturated soils.

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N3DADE

Evaluates analytical solutions for two- and three-dimensional non-equilibrium solute transport.

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HYDRUS

Simulates water, heat, and solute movement in one-dimensional variably-saturated porous medium.

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3DADE

Model evaluates analytical solutions for two- and three-dimensional solute transport.

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Watershed Boundary Dataset (WBD)

The Watershed Boundary Dataset (WBD) from The National Map (TNM) defines the perimeter of drainage areas formed by the terrain and other landscape characteristics.

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