Hydrological map, chart showing such hydrologic features as rivers and streams; the purpose and content of these maps vary according to the country of their origin.
These hydrologic features and connections provide water for and underpin biological communities.
We specifically explore several metrics that are simple and/or commonly employed in hydrologic analyses and interpret them in the context of connectivity between and among hydrologic features.
The behaviour of the atmosphere and of its tenuous, ionized outer reaches is treated in atmosphere, while the water cycle and major hydrologic features are described in hydrosphere, ocean, and river.
The effective exchange of hydrologic data containing references to hydrologic features requires standardised semantics of the concepts that allow identification of these features.
Algorithms for extracting hydrologic features and properties from digital elevation models (DEMs) are challenged by large datasets, which often cannot fit within a computer's RAM.
Here, the scope of common approaches to information modelling of hydrologic features is examined, and is compared to the requirements for feature identification in multiple contexts.
A conceptual model is presented that reconciles the underlying differences in representation of hydrologic features and levels of detail in typical datasets.
"For area measurement purposes, hydrologic features identified as intermittent water, glacier, or swamp are reported as land area," it says, adding this cautionary note: "Identification of land and inland, coastal, territorial, and Great Lakes waters is for data presentation purposes only and does not necessarily reflect their legal definitions".
The more simple approach to determining the hydrologic features of each scenario is an attempt to create a optimization model that is both computationally reasonable while representative of the uncertainty in the groundwater model.
