The Ottawa River is a major waterway in Canada, flowing for about 1,271 kilometers. It serves as a natural border between the provinces of Ontario and Quebec. The river originates from the Ottawa Valley and empties into the Saint Lawrence River, playing a crucial role in the region's ecology and economy. Historically, the Ottawa River was vital for transportation and trade, especially for the lumber industry in the 19th century. Today, it is popular for recreational activities such as kayaking, fishing, and boating, attracting both locals and tourists to its scenic banks.