The name of the land use and management record is a primary key referenced by in . All names in the landuse.lum file must be unique.

The pointer to the tile drain file is a foreign key referencing in .

The pointer to the conservation practice database is a foreign key referencing in .

The pointer to the urban database is a foreign key referencing in .

The pointer to the user BMP file is a foreign key referencing in .

User-defined calibration groups that can be used as conditions in .

The pointer to the management schedule file is a foreign key referencing name in management.sch.

Most large watersheds and river basins contain areas of urban land use. Estimates of the quantity and quality of runoff in urban areas are required for comprehensive management analysis. SWAT+ calculates runoff from urban areas with the SCS curve number method or the Green & Ampt equation. Loadings of sediment and nutrients are determined using one of two options. The first is a set of linear regression equations developed by the USGS (Driver and Tasker, 1988) for estimating storm runoff volumes and constituent loads. The other option is to simulate the build-up and wash-off mechanisms, similar to SWMM (Storm Water Management Model; Huber and Dickinson, 1988).

References

Driver and Tasker (1988)

Huber and Dickinson (1988)

The pointer to the plant community file is a foreign key referencing in .

The pointer to the Curve Number database file is a foreign key referencing in .

The pointer to the septic file is a foreign key referencing in .

The pointer to the overland Manning's n database is a foreign key referencing in .

The pointer to the filter strip file is a foreign key referencing in .

The pointer to the grassed waterway file is a foreign key referencing in .