Overview
The Iller–Lech Plateau, also referred to in German as the Donau-Iller-Lech-Platte or the Upper Swabian Plateau (Oberschwäbische Hochebene), is a gently rolling natural region in southern Germany. It is one of the formally recognised natural regions of the country and lies largely between the Danube and the Alpine Foreland rivers Iller and Lech. The area is characterised by a mix of agricultural land, forest patches and numerous wetlands and small lakes.
Geography and geology
The plateau owes its present shape to late Pleistocene glacial and subsequent fluvial activity. Successive ice advances deposited morainic material and created ground moraines, while meltwater streams formed outwash plains and isolated depressions. These depressions often host kettle lakes and bogs. Soils are typically fertile in the outwash and loess-covered parts, supporting mixed farming and grassland.
Landscape features
- Terminal and ground moraines left by Alpine glaciers
- Meltwater plains and gravel deposits
- Kettle holes, small lakes and peat bogs
- Patches of mixed forest and hedgerows between fields
History and human influence
Human settlement in the plateau dates back to prehistoric times and intensified through the medieval period. Monastic estates and rural communities shaped the land by draining wetlands, cutting peat and establishing arable fields and pastures. More recently, land use has balanced intensive agriculture with conservation efforts to protect remnants of natural wetland habitats.
Uses, conservation and importance
The Iller–Lech Plateau supports regional agriculture, groundwater recharge and biodiversity. It provides recreational opportunities such as hiking and birdwatching and contains nature reserves that safeguard bogs and lake ecosystems. Conservation measures and regional planning seek to reconcile farming, settlement and the protection of valuable habitats.
Distinctions and classification
Depending on the mapping system, the name and limits of the plateau vary; some sources emphasise its role within the broader Danube and Alpine Foreland landscapes. It spans parts of Baden-Württemberg and Bavaria and is discussed in overviews of Germany's natural regions, for example in regional catalogues and environmental planning documents (see natural region frameworks).