What are the waters called that represent the ordinary flow of a stream up to the line of the highest ordinary flow?

The term that best describes the waters representing the ordinary flow of a stream up to the line of the highest ordinary flow is "Riparian Waters." Riparian rights are associated with the land adjacent to bodies of water, including streams and rivers. In this context, riparian waters refer to those flows that typically occur within the banks of a stream during normal conditions, delineating the area of influence for property owners along such waterways.

Understanding riparian waters is crucial in land surveying and property law, as it defines the extent of the water's reach under ordinary conditions and impacts land use rights, environmental regulations, and water management policies. This term also highlights the relationship between land and water, which is essential for determining boundaries and usage for adjacent landowners.

The other choices represent different concepts or classifications of water bodies. Flood waters pertain to water that inundates land during storm events, navigable waters refer to bodies of water that are deep enough for navigation, and state waters often refer to waters held by the state for public use or regulatory purposes. However, riparian waters specifically address the ordinary conditions of a stream, making it the most accurate choice in this context.