Leipzig's waterway network threads through one of Central Europe's largest inland alluvial forests. The Auwald — a 5,900-hectare floodplain forest — has defined the city's hydrology since the Middle Ages, when monastic engineers first diverted the Pleiße and Elster rivers to power mills. By the nineteenth century, Leipzig had become Germany's second-busiest inland port, connected to the North Sea via the Saale and Elbe. The Karl-Heine Canal, completed in 1856, was built to carry coal barges from the western suburbs into the city centre, its brick-lined banks now flanked by linden trees and converted warehouses. Today the waterways serve recreation rather than freight. Electric boats glide beneath alder and ash canopy, their motors silent enough to let passengers hear woodpeckers and kingfishers. The Pleiße River braids through the southern Auwald, its oxbow loops sheltering otter and beaver populations that returned in the 1990s after decades of industrial pollution. Water quality has improved enough that pike and catfish now thrive in the deeper channels. The Leipzig river tour routes follow these restored corridors, where willow branches sweep the water and egrets nest in the reed beds. The forest itself is a rarity: a lowland hardwood floodplain that floods seasonally, creating temporary wetlands rich in amphibians and dragonflies. Oak and elm dominate the higher ground, while alder carr colonizes the channels. Spring high water transforms the forest floor into a shallow lake, accessible only by boat. Summer reveals the mud banks and gravel bars where grey herons hunt. The canal system operates year-round, with no seasonal closures, allowing visitors to witness the forest's hydrological cycle across all four seasons. Ice forms only in the coldest winters, and even then the main channels remain navigable. Leipzig waterways tours launch from several points along Waldstraße and the western canal basin. Motorboat tours cover longer distances, reaching the confluence zones where the Pleiße meets the White Elster. Electric boats prioritize the quieter tributaries, where engine noise would disturb nesting birds. Both formats pass beneath low stone bridges built in the 1800s, their arches just wide enough for a single vessel. The routes are marked by numbered posts and historic lock gates, some still hand-operated by crews using iron wheels and counterweights.