Maps on this page allow users to visualize and evaluate the potential irrigation and water quality benefits of drainage water recycling across the U.S. Midwest. You can compare among the following choices:
- Year: View results for a 30-year average ("allyears") or a specific year during that period.
- Water Storage Size: Three sizes of water storage reservoir can be selected, provided as a percent of the field area, assuming a 10-foot deep reservoir.
- Soil Water Storage: Three generalized soil types are available, ranging from one with "low" soil water storage (typical of those with low organic matter or a shallow depth) to "high" soil water storage (typical of deep, high organic matter soils). These are generalized, but provide an idea of the potential of drainage water recycling across the region.
Results: Four types of results are available: Annual Irrigation Supplied, Irrigation Sufficiency, Captured Drain Flow, and Percent of Drain Flow Captured. For each of these you can view a map and a statistical summary across the region.
The inputs used in these simulated results can also be viewed by selecting "View Inputs Used in Analysis". These inputs are the results of a 30-year simulation using the VIC model (Lee, 2017). For more information on the model and how it was run, see "About This Tool".
Download Data: Spatial results can be downloaded as a .json or .kml file by clicking on the "Download Data" button. You can also download the results and inputs for a specific location by clicking on that grid cell in the map. Note that these results are an estimate based on 1/8 degree grid cells, so many not represent any specific location within the grid cell.
Lee, C. (2017). Regional Variability of Subsurface Drainage in the U.S. Corn Belt. Masters Thesis, Purdue University.
To display the results click one button from each block