After several unsuccessful attempts by the Polish Piasts to regain control, the area along the lower Noteć was finally incorporated into the Brandeburg "Neumark" region. For centuries, the border with the Greater Polish Poznań Voivodeship ran between Drezdenko ("Driesen") and Krzyż upstream in the east. Under the rule of Elector Joachim III Frederick of Brandenburg from about 1603, the fortress was rebuilt and further settlements were erected within the wetlands. First plans for a large-scale drainage and land amelioration were developed under King Frederick William I of Prussia in 1738/39, though not carried out until after the Seven Years' War in 1763.