The image shows a map of the Elbe/Weser estuary, the Jade Bay and the North Frisian Islands. Light yellow is the land. There is a color scale from black to blue showing the relative percentage concentration of the Elbe water. Blue is a concentration of about less than 10%, yellow is between 10% and 35%, and beyond that it is from orange, to red, to black at 100%. The Jade Bay, the area north of the Jade Bay, the Weser area and the areas west and north of St.Peter Ording are blue. In the area of the Elbe Urstromtal is yellow to red. The Elbe River is black.