Stecknitz Canal

The Stecknitz Canal, known in German as the Stecknitzfahrt, was a man-made waterway in northern Germany. It connected the towns of Lauenburg and Lübeck along the Old Salt Route by joining two small rivers: the Stecknitz, which flows into the Trave, and the Delvenau, which flows into the Elbe. This created an inland route that crossed the watershed between the North Sea and the Baltic Sea. Construction took place from 1391 to 1398, making it Europe’s first summit-level canal and one of the continent’s earliest artificial waterways. During the 1890s, a larger, straighter channel called the Elbe–Lübeck Canal replaced it, though parts of the original Stecknitz Canal’s path were reused. The original canal was 0.85 meters (33 inches) deep and 7.5 meters (25 feet) wide. The man-made section stretched 11.5 kilometers (7.1 miles), but including the rivers it linked, the total length reached 97 kilometers (60 miles). Seventeen wooden locks managed the 13-meter (43-foot) elevation difference between the endpoints and the highest central section, the Delvenaugraben. One of these locks, the Palmschleuse in Lauenburg, still exists today. In the Middle Ages, trade between the North Sea and Baltic Sea expanded rapidly, but the sea route through the Øresund, which had become vital for commerce since the 13th century, was slow and risky. As a result, the Hanseatic city of Lübeck and Eric IV of Saxe-Lauenburg agreed in 1390 to build a canal between the Elbe and the Baltic. Work began in 1391, and on 22 July 1398, thirty barges carrying Lüneburg salt reached Lübeck for the first time. The canal soon replaced the overland cart road as the main way to transport Lüneburg salt along the Old Salt Route. In Lübeck, the salt was stored in large warehouses before being loaded onto ocean ships for export across the Baltic region. In the opposite direction, Stecknitz barges carried cereals, furs, herring, ash, timber, and other goods from Lübeck. These were unloaded in Lauenburg and sent down the Elbe to Hamburg. Later, coal, peat, brick, limestone, and gravel were also transported. The canal was especially important in years when the Øresund was closed to merchant ships due to disputes over Sound Dues and foreign shipping. Traffic peaked in the 15th century, with over 3,000 shipments moving more than 30,000 tons of salt each year. By the 17th century, this had dropped to between 400 and 600 shipments (5,000 to 7,000 tons). In 1789, only 64 shipments carried about 680 tons of salt. Plans for a new Baltic–North Sea canal had been proposed as early as the 17th century, but none were carried out until the late 19th century, when the Elbe–Lübeck Canal was built using parts of the old route. For 500 years, the Stecknitz Canal was used to move “white gold” and other goods. Today, the Palmschleuse lock in Lauenburg is one of the few remaining parts of the old canal, preserved as a historical monument. The canal consisted of an 11.5-kilometer artificial trench called the Delvenaugraben, which connected the north-flowing Stecknitz and the south-flowing Delvenau. The trench itself was about 85 centimeters deep and 7.5 meters wide, though it was enlarged between 1821 and 1823 to a depth of 144 centimeters (57 inches) and a width of 12 meters (39 feet). Outside the man-made section, the canal followed the winding natural courses of the two rivers, making the full trip from Lauenburg to Lübeck 97 kilometers long, even though the straight-line distance between the cities is only 55 kilometers (34 miles). The journey often took two weeks or more because of the many locks and the difficulty of towing. The canal originally had 13 locks, which later renovations increased to 17. Most were initially one-gate flash locks built into weirs, usually placed below the mouth of a tributary creek. In these, water was dammed until a barge was ready to pass downstream. In Lauenburg, the original route included one chamber lock, the Palmschleuse, because a watermill nearby would have been disrupted by a flash lock. Over time, more flash locks were converted to chamber locks, a process that continued into the 17th century. The canal crossed the drainage divide between the North and Baltic Seas, with a summit height of 17 meters (56 feet) above sea level. To supply the top section with water, flow was diverted from the Hornbeker Mühlenbach. On the northern side, the canal descended to the Ziegelsee near the town of Mölln and then connected to the Stecknitz through a series of eight locks. On the southern side, the artificial canal descended to the Delvenau via a staircase of nine locks. The original salt barges were about 12 meters (39 feet) long and 2.5 meters (8.2 feet) wide, with a draft of 40 centimeters (16 inches) when loaded with roughly 7.5 tons of salt. The one-way trip took at least ten days. When traveling uphill or through chamber locks, the barges had to be hauled by laborers or animals walking the towpath along the banks. By the 19th century, newer barge designs included rigging that allowed sailing without towing, provided there was enough wind. In Lauenburg and Lübeck, the barges were unloaded, and their cargo was transferred to ships for export down the Elbe and Trave. Stecknitz bargees were only allowed to own one barge each, which prevented them from becoming wealthy. This kept them dependent on the Lübeck salt merchants, who faced no such limits and grew very rich.