What is the northernmost point of North Dakota?

The northernmost point of North Dakota is identified as the Red River of the North. This river forms a natural boundary between North Dakota and Minnesota. Specifically, the Red River flows northward into Canada, making it significant not only for its geographical feature but also for its historical importance as a critical waterway for trade and settlement in the region. The landscape in the area around the Red River is characterized by flat plains, which contributed to the development of communities along its banks.

In contrast, the Missouri River, while significant in size and historical relevance, primarily flows through the western part of North Dakota and does not reach as far north. The Souris River also flows through North Dakota but does not extend to the northern border of the state when compared to the Red River. The Turtle River, though a recognized waterway, is smaller and located in the central area of North Dakota, further emphasizing why the Red River is the correct answer in identifying the state's northernmost point.