This study investigates the morphodynamics of the Tysa River channel over a 145-year period along a valley segment that intersects the Vyhorlat-Hutyn Volcanic Ridge. This section is characterized by minimal anthropogenic alterations and exhibits natural variability in channel types, including single-thread, multi-thread, and braided configurations, as well as straight, slightly sinuous, and meandering forms. Our analysis revealed that in the late 19th and early 20th centuries, multi-thread sinuous channels predominated. Since the 1980s, they have largely transformed into single-thread meandering channels. By the early 21st century, only single-thread forms were present, with slightly sinuous types being the most common, followed by meandering and straight reaches. Since 2020, single-thread meandering channels have become dominant. The study identifies a cyclic pattern in the transformation of channel morphological types, with a recurrence to initial states observed on approximately 40–50 and 100-year intervals.