Skip to main content
ARS Home » Plains Area » Temple, Texas » Grassland Soil and Water Research Laboratory » Research » Research Project #437136

Research Project: Soil and Water Assessment Tool (SWAT) Modeling Support for the Long-term Agroecosystem Research (LTAR) Network

Location: Grassland Soil and Water Research Laboratory

Project Number: 3098-13610-008-076-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 15, 2019
End Date: Sep 30, 2022

Objective:
The objective of this work is to apply the latest version of the SWAT model to the 18 LTAR network sites. This will be used to predict the impact of past and future conservation efforts on sediment and nutrient loads in these regions.

Approach:
Data collected at suitable LTAR sites will be used to develop a calibrated SWAT+ model at each site. SWAT+ will be calibrated using runoff, sediment, nutrient loss, crop growth and biomass where available. Parameter values from the calibrated SWAT+ model will be incorporated into larger scale models to generate regional or national predictions. A variety of scenarios will be simulated which describe current “business as usual” and progressive “aspirational” agricultural systems.