Motala Ström is a river located in Sweden, flowing through the town of Motala and connecting Lake Vättern to Lake Mälaren. It is approximately 90 kilometers long and plays a significant role in the region's hydrology and ecology. The river is known for its scenic beauty and is a popular spot for recreational activities such as fishing and boating. The river has historical importance as well, having been a vital waterway for trade and transportation in the past. Motala Ström also features several locks and canals, which were developed to facilitate navigation and manage water levels. These engineering works are part of the Göta Canal system, enhancing the river's significance in Swedish history.