Elbe: from the lower limit of the port of Hamburg to a line linking the Döse beacon and the north-west point of the Hohe Ufer (Dieksand) with the Este, Lühe, Schwinge, Oste, Pinnau, Krückau and Stör tributaries (in each case from the barrage to the mouth) including the Nebenelbe.
Laba: od spodnje meje pristanišča Hamburg do črte, ki povezuje obalno luč Döse in severozahodno točko Hohe Ufer (Dieksand) s pritoki Este, Lühe, Schwinge, Oste, Pinnau, Krückau in Stör (v vseh primerih od jeza do ustja), vključno s Spodnja Laba.