Slope gradient values at the water design limit (DüV)

The Fertiliser Ordinance §§ 5, 13a and the WHG § 38a define management requirements for the protection of surface waters taking into account an average slope inclination, inland from the upper edge of the slope. The upper edge of the slope (BöK) is not available as a topographical element in the country BB. In coordination with the water and agriculture departments, the water design limit is used as a substitute. This is formed from the ATKIS water objects, taking into account the digital field block register and geometrically represents the surface water to be protected.