The aim is to achieve good ecological status or, in the case of heavily modified water bodies, good ecological potential in accordance with the Water Resources Act (§ 27 WHG). The status of the habitat for aquatic organisms is to be improved by relocating individual sections of the bank and installing structural elements. 

In the first step, the existing bank will be removed, the river bed widened and the accompanying bank path relocated. The Iller will be created space for development. In the next step, structural elements such as groynes (dams built across the river) or dead wood will be installed. These measures as well as the design of bays and steep banks create different habitats for the biocoenosis of plants and animals.. 

An alternation of slow-flowing sections as resting areas and fast-flowing sections, which carry oxygen into the water body through their currents, is of great importance for the habitat. A diversity in the water body structure creates a diversity in the animal and plant world.  

In addition to relocating the bank, the bank slope is to be flattened. In this way access for the population is created. The water body is to be made experienceable. In the transition between the embankment and the river, shallow water zones and gravel banks are created, which serve as spawning grounds for fish.

Currently, the aquatic organisms of the Iller cannot migrate into the side waters of the "Neuer Bach". The passability is not given. The estuary area will be redesigned by a flattening, so that the habitats Iller and "Neuer Bach" can connect. The side waters serve the fish as spawning grounds or retreat places during high water. The measure is part of the project Agile Iller.