Explore some of the models we work with.
The Annualized Agricultural Non-Point Source (AnnAGNPS) model is a continuous simulation watershed-scale program designed to simulate daily runoff, sediment, nutrients, and pesticides in agricultural watersheds.
The Agricultural Policy/Environmental eXtender (APEX) model extends the EPIC model to simulate land management impacts on whole farms and small watersheds, including sustainability, erosion, and economics.
The Daily Century (DayCent) model simulates fluxes of carbon and nitrogen among the atmosphere, vegetation, and soil, enabling the assessment of soil carbon dynamics and greenhouse gas fluxes.
The Rangeland Hydrology and Erosion Model (RHEM) is a process-based, event-scale hillslope model for rangelands. It estimates runoff, interrill and concentrated-flow erosion, and sediment delivery from a single storm on a slope profile, using rangeland soil, cover, and storm inputs.
The Revised Universal Soil Loss Equation (RUSLE2) model estimates long-term average annual soil erosion caused by rainfall and overland flow, guiding conservation planning with long-established empirical relationships.
The Soil and Water Assessment Tool (SWAT) model is a river basin-scale model that predicts the impact of land management practices on water, sediment, and agricultural chemical yields in large, complex watersheds.
SWAT+ is the current, rewritten Soil and Water Assessment Tool. It is a continuous, watershed-scale ecohydrological model with a more flexible spatial structure (landscape units, routing units, and aquifers) than SWAT2012. Texas A&M steers new projects here; this lab also pins SWAT+ rev. 62 beside classic SWAT.
The Water Erosion Prediction Project (WEPP) allows for the continuous simulation of physical processes like infiltration, runoff, and sediment transport to predict soil loss and deposition on hillslopes.