Standard to aid consistent identification of hydrologic features

March 29th, 2018, Published in Articles: PositionIT, Featured: PositionIT

The Open Geospatial Consortium (OGC) has approved the WaterML 2: Part 3 – Surface Hydrology Features standard, which forms part of the suite of standards that groups water-related OGC standards. It defines a model for identification of surface hydrologic features, such as catchments, water bodies, and confluences, to support applications like modelling of surface water flow and accumulation. Such modelling is instrumental in water resource planning and flood prediction and analysis. Simply known as Surface Hydrology Features or just HY_Features, it defines a common conceptual feature model for describing typical features of the hydrology domain using established models and patterns endorsed by WMO and UNESCO, such as those documented in the International Glossary of Hydrology. This standard follows Part 1: Timeseries, and Part 2: Ratings, Gaugings and Sections. The ability to represent the same catchment, river, or other hydrologic feature in several ways is critical for cross-referencing related features and building integrated data systems. The HY_Features model helps aid in such data integration, as it supports referencing information about a hydrologic feature across disparate information systems or products. As with any OGC standard, this standard is free to download and implement. Interested parties can view and download the standard at

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