New satellite images show Europe’s disappearing rivers due to drought

Unprecedented drought conditions have revealed the long-buried remains of Nazi-era warships submerged in the Danube River near Prahovo, Serbia. As Europe grapples with one of the worst heatwaves in recent history, record-low water levels have exposed the wreckage of dozens of vessels sunk by German forces during their chaotic retreat from advancing Soviet troops in 1944. These discoveries are shedding new light on World War II history, while also highlighting the growing environmental crisis gripping the continent. The exposure of these wrecks follows weeks of extreme heat and prolonged dryness across much of Europe. According to the Global Drought Observatory, more than half of Europe's land area is currently under drought conditions, with nine percent classified at the highest alert level. Southern Germany, Hungary, Romania, Austria, the Czech Republic, and Slovakia are particularly affected. The European Commission’s Joint Research Centre confirmed that major rivers, including the Loire, Po, Rhine, and Danube, have reached record-low levels due to sustained high temperatures and minimal rainfall. Satellite imagery analyzed by Al Jazeera’s Open Source Unit shows dramatic changes in the landscape of Europe’s major rivers over the past three years. Comparisons of images from the Loire River near Saumur, France, indicate a marked reduction in water coverage, with larger sections of the riverbed now exposed. Similar patterns are evident along the Garonne River in southwestern France, where satellite photos from May to August show extensive browning of vegetation and farmland, signaling severe hydrological stress. In Germany, the Rhine River has suffered similarly. Satellite images taken near the town of Kaub reveal expanding areas of sand and gravel exposed within the riverbed, a stark contrast to earlier images showing a fully water-filled channel. This decline in water levels has disrupted shipping operations, with reports indicating that some vessels became stranded at critical bottlenecks. The inland waterway transport sector issued warnings that the low water levels could render parts of the Rhine impassable for both commercial and tourist navigation. Italy’s Po River has also been significantly impacted. Images from the Emilia-Romagna region near Boretto show a noticeable decrease in water coverage between 2023 and 2026, with previously submerged areas now exposed. This aligns with reports from the Joint Research Centre, which noted that the Po basin is under severe hydrological stress, compounding challenges related to irrigation and energy production. The situation on the Danube River in Hungary further underscores the severity of the drought. Water levels have dropped so dramatically that historical shipwrecks from the Second World War have become visible. These wrecks, remnants of German military vessels abandoned during the 1944 retreat, offer a rare glimpse into the final days of the war in Eastern Europe. Historians and archaeologists are now examining the sites to gather more information about the conflict and the movements of Axis forces during that period. Experts suggest that the current drought is part of a broader trend linked to climate change, with rising global temperatures contributing to increasingly frequent and severe weather extremes. The exposure of these wartime relics serves as a sobering reminder of how environmental shifts can uncover hidden layers of history, even as they threaten modern infrastructure and ecosystems. Authorities in Serbia and neighboring countries are monitoring the situation closely, balancing efforts to preserve historical artifacts with the need to manage water resources for agriculture and industry. Meanwhile, scientists continue to analyze the data collected through satellite observations, hoping to better understand the scale and implications of the ongoing drought across Europe.