Germany's River Restoration Challenges Amid Climate Droughts

In June 2026, Central Germany experienced record temperatures, following a hot and dry summer the previous year. This escalating pattern of dry years has led to reduced rainfall and less water from mountain sources, impacting drinking water reserves. The Repoda Dam in Eastern Germany, for instance, was not at full capacity in November, and a record dry winter with little snow kept water levels low until spring. This was then followed by localized flash floods in May, indicating that climate change is altering nature's water cycle more profoundly and rapidly than anticipated. While federal and state governments draft laws and plans, their implementation often lags, raising questions about Germany's ability to adapt its landscape to the climate crisis.

The Veter River: A Model of Natural Resilience

The Veter River in the Thuringian Slate Mountains of Eastern Germany stands out as a rare example of a river in its natural state, characterized by wide meanders. In late September 2025, an inspection of its floodplain revealed that water levels had recovered quickly after just a few days of rain. Stefan Gonka explains that the river's 17 km length and its ability to move water back and forth within the floodplain contribute to its high biodiversity.

The large, shifting meanders create oxbow lakes where water collects, while other areas remain dry, supporting dry grassland species. A key advantage of a meandering river with a floodplain is its capacity to retain significantly more water in the land compared to a straightened waterway, primarily because its course is three to five times longer. This environment supports a unique ecosystem, with trees like alders and willows thriving in the wet soil.

When water levels are high and the river overflows, the entire floodplain becomes submerged. This dynamic interaction between groundwater, surface water, river banks, and the floodplain fosters high biodiversity. This biodiversity is protected under conservation laws. Small loaches migrate upstream through beaver dam gaps, and trout jump over them. While only a small fraction of species live in the flowing water, the majority inhabit the riverbed among stones, pebbles, and sand.

The presence of caddisfly larvae, which are indicators of good to very good water quality, further confirms the health of the Veter. Decaying tree trunks also play a crucial role by providing habitat for tiny creatures that act as decomposers and filters, contributing to the water's self-purification process. The Veter's natural interaction with its surroundings serves as a model for other rivers needing upgrades to cope with climate change.

The Unstrut River: A History of Human Intervention

In mid-February 2026, experts gathered above the Unstrut River near Leipzig, observing how human intervention has drastically altered its course. The history of intervention dates back to the Middle Ages when Flemish hydraulic engineering experts were brought in to control rivers. Over centuries, various powers continued to modify the Unstrut, initially for flood protection and to utilize fertile soil, as frequent flooding threatened harvests.

These interventions became increasingly radical. The river was straightened by the communist East German government, shortening its flow path and accelerating water drainage. This massive intervention, which also removed trees and shrubs, was primarily aimed at quickly removing water from the landscape.

The Consequences of River Straightening

Approximately 90% of Germany's rivers have undergone similar interventions. While initially intended for flood protection, the focus shifted to prosperity and livelihoods. Only much later did the negative environmental impacts become apparent.

Matthias Schwz, a floodplain ecologist, highlights the problem: straightened rivers quickly carry water away from areas that are already experiencing water shortages. He emphasizes the need for water to remain in the landscape longer, especially given the droughts since 2018. Dykes, however, separate the river from its floodplain, preventing natural water retention.

The river's energy, particularly during floods, is normally used to carry sediment and erode banks. When confined by artificial banks, this force is directed downwards, deepening the riverbed. A deeper riverbed leads to lower river water levels and a corresponding drop in groundwater levels. The solution, according to Schwz, is to slow the river down, create space for flooding, and allow flushed-out material to settle, which also improves water quality.

The Unstrut, for example, has suffered from nitrate pollution for years, partly due to potash mines discharging wastewater and farmers fertilizing fields up to the riverbanks. A natural river, or a section of it, would have a greater capacity for self-purification.

The Potential of Oxbow Lakes and Renaturation

Disconnected oxbow lakes hold significant potential for river restoration. Reconnecting them can permanently alter river dynamics. However, Matthias Schwz, who has studied river floodplains and renaturation for over 30 years, advises careful consideration. Reconnecting an oxbow lake might be detrimental if it has become a valuable spawning ground for amphibians, which dislike flowing water or high fish populations. Generally, reconnecting old meanders is beneficial as it extends the river's length and provides the advantages of a more natural river. For the Unstrut, this would be most effective if the dyke could also be relocated further back into the old floodplain.

Such a plan is indeed envisioned for a section of the Unstrut. The dikes are to be moved closer to towns, and the floodplain restored, though the timeline remains uncertain.

The European Water Framework Directive and its Challenges

The European Water Framework Directive, enacted in 2000, aimed to achieve good ecological and chemical quality for Europe's water bodies by 2015. Allowing rivers more space to meander is considered the most crucial measure. However, this deadline was missed and postponed to 2021, then to 2027. Even 2027 is deemed unrealistic, with extensions now reaching 2033 and exemptions until 2045 and beyond.

In early June 2026, volunteers in Thuringia, working with the NGO Environmental Action Germany, assessed the health of the Bibbach River by studying aquatic insects and small creatures. Environmental Action Germany has focused on stream and river health for 30 years. Project manager Sabrina Schoitz expresses concern over the directive's delayed implementation. Only 9% of Germany's water bodies meet the "good ecological condition" criteria. She likens this to submitting a tax return that is only 9% complete, highlighting the severity of the situation.

Schoitz emphasizes the urgent need for land for river restoration. She points out that Germany uses two and a half times more land for traffic infrastructure than would be needed for rivers. Despite promises after every flood, rivers are not being given more space.

Farmers' Perspectives and Sustainable Practices

In late March 2026, after a long drought, rain returned to the Thuringian Basin. Matthias Vegan, a farmer whose fields are near the Unstrut, traditionally benefited from the "deep land" near the river, which provided a good water supply even during dry spells. However, the Thuringian Basin is experiencing additional summer droughts. Floodplain ecologists suggest giving up this better-watered land to allow the river to expand, an idea Vegan resists.

Vegan employs his own strategy: building up humus in the soil to increase water availability and retention. He explains that targeted organic fertilization can create more humus, allowing the soil to store more water during wet winters and make it available to crops throughout the year. He notes that a good humus balance not only provides nutrients but also enhances water-holding capacity, giving life to the soil.

The nearby Straussfurt reservoir stores water for the local community, including farmers. Vegan uses this water to save his crops during long dry summers, ordering and paying for what he needs.

Conflicting Interests and Implementation Delays

The state government recently presented a plan for the Unstrut, involving the reorganization of flood defenses and river renaturalization, which will directly affect Vegan's farm. While he finds the project interesting, he is concerned about the specifics, such as how much land will be flooded, which dikes will be removed or lowered, and how he will be able to farm afterward. He questions whether he could graze cattle on frequently inundated floodplain meadows, which is considered a gold standard in nature conservation but incompatible with his purely arable farm.

Currently, rivers in Germany occupy 1% of the total land area. A federal environment agency study suggests an additional 2% (around 7,000 km) is needed to restore the country's rivers and meet water protection commitments. Matthias Schwz estimates that 90% of the Unstrut's floodplain was lost, shrinking from an original 1 to 4 km wide to sometimes only 20-30 meters on each side. To restore the river, excavators will be needed to break up solid banks and reconnect the river with the surrounding countryside.

Matthias Schoitz coordinates "Sponge Boost," an EU research project involving seven countries studying how to retain water in the landscape for longer periods. Partners in Portugal, for example, are rewetting peatlands and bogs by removing drainage ditches, leading to water retention for 20 hours longer after heavy rain. This approach improves soil water balance in neighboring areas, increases soil moisture, and potentially leads to better crop yields for farmers.

However, farmers in the Thuringian Basin, where a section of the Gira River (a tributary of the Unstrut) is being restructured, view these measures as a massive loss of prime agricultural land. They argue that agriculture produces food, which is a priority, and that these high-grade soils (70-90) are essential, especially with climate change, as they consistently yield crops even in dry years.

Discussions about restoring the Unstrut date back to the 1990s, with initial proposals for eco-friendly farming facing strong opposition from farmers. In 2015, the German government included the Unstrut in its national flood protection program, planning to relocate dikes and give the river space. Plans for 12 river sections were discussed, detailing dike relocation, submerged land, and reconnection of old channels. However, 11 years passed before Thuringia presented its own vague plan. Detailed planning is expected until 2035, with construction beginning afterward and taking until 2050. Renaturation will only occur at the very end. This 25-year timeline for an urgent project disappoints conservationists.

Public Support and Political Obstacles

Despite some interest groups campaigning against land use for floodplains and nature conservation, polls show that 80-90% of the general public supports these efforts, recognizing the benefits for current and future generations. A healthy river ecosystem provides numerous free benefits; for example, a quarter of Leipzig's drinking water comes from a major river's floodplain.

At the Ket water treatment plant near Leipzig, the lab manager explains how riverbank filtrate is transformed into drinking water for 750,000 people. Water seeps into the landscape, flows slowly parallel to the river, and is extracted from wells located about 300 meters from the Mula River. It takes about 50 days for the water to travel this short distance. The Leipzig Water Works, which has sourced drinking water from here for over a century, ensures the soil between the river and the treatment plant remains uncontaminated, partly through a subsidiary practicing organic farming in the water catchment area.

Chemical pollution of rivers is prohibited under European law, yet calls for exemptions, such as for rare earth mining, are increasing. Water utilities collaborate to combat new pollution sources, with strict controls at waterworks.

In summer 2026, Germany was expected to pass a bill to strengthen natural habitats and prevent construction on protected floodplains. The environment minister expressed optimism, calling it "protecting the crown jewels of nature in Germany." He emphasized the need to prioritize and protect these areas, securing nearly €2 billion in additional funding. He believes there is a consensus on this issue and aims to strengthen and expand floodplain restoration programs.

While some waterways have been successfully restored, such as in Saxony where land readjustment procedures brought public land closer to waterways, and in Thuringia where state-funded water management associations were established, progress is slow. In Saxony-Anhalt, flood protection plans for the Saale River prioritized synergies with nature conservation.

Kyle Hines Yelling, a retired aquatic ecologist who worked for Saxony-Anhalt for 44 years, believes streamlining processes within government agencies is crucial. He advocates for more flexibility and courage in decision-making, allowing for permits to be issued more readily when good developments are observed.

A study by the Helmholtz Center for Environmental Research in Leipzig identified early collaboration among government agencies (water management, nature conservation, soil management, agriculture, and forestry) as a key success factor, along with involving stakeholders like landowners, farmers, and local residents.

The first dike relocation on the Elbe River in 2004 expanded the floodplain by 140 hectares, providing valuable insights. The city of Dessau also gained improved flood defenses. However, nature conservation recently suffered a setback in Germany as Parliament passed a major infrastructure act overriding environmental standards for construction projects. The environment minister's bill to strengthen natural infrastructure was postponed, meaning the protection of nature's "crown jewels," including river floodplains, will have to wait.