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Noah’s ark on the doorstep of the Rhineland town

The Sauer Delta, prestigious area, is renowned for its important natural wealth. Its fauna and flora, typical of damp areas, flourish in Rhineland forests, reed beds and floodplains. There are numerous species of birds, mammals, batrachians, fish and plants, some rare, to discover.


The nature initiation center

A world of nature to explore on your doorstep!

Comprising professional naturalists and volunteer nature guides, the Nature Center has been endorsed as a “Center for the Introduction to Nature and the Environment” (CINE). In addition to its educational work with school children, it also works with the general public to introduce them to the countless riches of the landscape and the flora and fauna to be found in its territory. From the Northern Vosges to the Rhine, from Le Bienwald to the outskirts of Strasbourg, the Nature Center is our guide to information on and exploration of the living world that surrounds us.

In addition to the activities of the “General Public” and “Schools” programmes, the CINE is able to propose activities according to your more specific requests and interests. 

For more information:

Maison de la Nature  
42 rue du Rhin 
Tél. 03 88 86 51 67



The nature reserve

The nature reserve of the delta of the Sauer is part of the river forest of Alsace and contains a remarkable mosaic of natural habitats, which the ornithological station.

On land there are:

  • reserve_naturelle3A mix of forest sites showing the different stages of the evolution of the alluvial forest environment from fast growing pioneer forests of soft wood made up mainly of White Willow, to the final hard wood forest of hard wood made up of pedonculate or English oak, ash, elm
  • plantations of hybrid poplars
  • meadows, mainly in the Grosswoerth, where big reed beds cover the most humid ground


©M. Savio "Euphorbia palustris"

Aquatic areas :

  • The Sauer and its different branches more or less connected to each other depending on the water level.
  • Gravel pits excavated more recently.


Between these two distinct important types of environment there are mudflats that vary in size according to water level during flooding.
©M. SavioWillow forest

These different natural habitats are hosts to rich and varied flora and fauna with a survey revealing 400 different plants, 182 types of bird, 34 varieties of dragon fly, and 20 types of fish.

Surprise yourself exploring these different zones and their exceptional natural assets alone or with a guided tour organised by the site manager.





For more Information : 

Conservatoire des Sites Alsaciens
Antenne du Bas-Rhin
1, rue des écoles – 67850 OFFENDORF
Tél. 03 89 83 34 10 – Fax 03 88 59 77 01


 Our Rhine forests

The Rhine forests of the canton form a curtain of greenery round Seltz. Not far away, Celtic holy places, the forests of Seltz and Niederroedern, as well as the Bois de l’Hôpital (Hospital Wood) at Kesseldorf are ideal places for long walks. In the heart of the valley, the Seltzbach murmurs through woodland to rejoin the river Sauer which threads its way (along the former Rhine riverbed) from Seltz to Munchhausen.


Along with the forests of Mothern and Beinheim, these forests form a veritable eco-corridor, a sanctuary conducive to wildlife and, more particularly, to wetland-dependent species (ducks, waders, amphibians, etc.). These forest spaces are now managed to safeguard this natural heritage and enable the attentive rambler to discover there richness... The high point of these remarkable areas, the Sauer Delta Nature Reserve, where the visitor can explore a patchwork of reed beds, alluvial forests, water meadows... In this protected environment, he can delve back into the Rhineland landscapes of earlier times and picture the work of the fishermen of yore aboard their flat-bottomed boats.

Another natural curiosity awaits the rambler: the Lower Rhine willow, the emblematic tree of the Rhine forests. As the result of the regular pruning which once provided the raw material for making clogs, baskets and wicker fish traps, trees in phantasmagorical shapes inhabit these forests, sculpted over the generations. Some wonderful specimens can be seen in the municipal forest of Mothern.


 A rich fauna and flora

Regarding the fauna, one can find rare amphibians such as the brown toad or the green tree fog. Bird life is also abundant with perching birds such as the blue throat, warblers (reed warblers for example).

©M. Savio

In the delta in winter there are water birds of passage such as winter teal, pintail ducks or the rarer smew or certain waders such as the Great White Egret. Regarding the flora, one can recognise such rare and protected plants as the violet.  Euphorbia, several orchids, Epipactis helleborus among others, and also the creepers which have carned the Rhine forest its nickname of “jungle”. But other sites such as the Woert of Seltz merit a detour. This former loop of the Rhine is home to a remarkable combination of vegetation. One can find dry-habitat flora such as brome and hawthorn not to mention orchids. These habitats are very interesting from an ecological point of view.

 Backwater of the Rhine

In former days the Rhine used to flow in large loops which would move from one year to another. After the river was regulated different biotopes developed in numerous dead branches. The Aspenkopf at Beinheim is one of them. With time it stilted up and began to lose its richness of flora, fauna and fish. A major restoration programme has created a flow of water from the Rhine, unsilting the main bed and unplugging water table springs. In creating a current and subjecting the sector to repeated influences of variations in the river, man has revived the biotope much to the joy of not only naturalists, but also of its inhabitants – the animals, fish and plants.