HY_AtmosphericHydroFeature OGC HY_Features: a Common Hydrologic Feature Model

Copyright © 2014 OGC 27 Figure 19 UML: HY_AtmosphericFeature – Package dependencies class hl á _atmo â á heri ã ä eature «FeatureType» HY_ å tmos æ çè ricHydr éêè ature:: HY_Preci æ itation «FeatureType» HY_ å tmos æçè ricHydr éê è ature:: HY_Hydr éë eteor «FeatureType» HY_Hydrogra æ ç ì c í et î or ï :: HY ð ñ ater ð ò i ó uidPhase «FeatureType» HY_Hydrogra æ ç ì c í et î or ï :: HY ð ñ ater_SolidPhase +snowmelt ô ..1 +iceFraction ô ..1 +waterFraction ô ..1 28 Copyright © 2014 OGC Figure 20 UML class diagram: HY_Precipitation 7.6 HY_SurfaceHydroFeature This application schema Figure 21 defines concepts of the hydrology phenomenon on the Earth’s land surface with respect to water bodies aggregated in a hydrographic network using a connecting system of confining channels, but without complexity and detail of hydrologic and hydraulic models. Figure 21 HY_SurfaceHydroFeature – Package dependencies SurfaceWater informative package summarizes the most popular water bodies mass of water on the land surface each special by the property to permanently or temporarily move, by origin, by extent, by the phase of the contained water, or by their interaction with open sea. Depending on the implementation, each special type of hydrographic feature may be described by suitable attributes. SurfaceWaterConfines Figure 22 package contains key elements confining a surface water body such as bed and banks of the watercourse. Depending on specific use cases, the channel of at least one segment through or along which water may move, may be associated with the hydrographic network of water bodies. Copyright © 2014 OGC 29 class hl õ _channel ö et ÷ or ø «FeatureType» HY_Surf ù ú û ü aterConfines:: HY_Ban ý «FeatureType» HY_Surf ù ú û ü aterConfines:: HY_Channel HY þ ÿ et w or k «FeatureType» HY_Surf ù ú û ü aterConfines::HY_Channel N et or ý + drai n atter n H Y _ rai n atter n .1] «FeatureType» HY_Surf ù ú û ü aterConfines:: HY_ChannelSegment «FeatureType» HY_Surf ù ú û ü aterConfines:: HY_Riv erBed «C o st» HY_Surf ù ú û ü aterConfines:: HY rainagePattern + annular + centripetal + dendritic + distri b ary + parallel + pinnate + radial + rectangular + trellis «FeatureType» HY_Surf ù ú û ü aterConfines:: HY_Reach «FeatureType» HY_Hydrogra p c N et or ý :: HY_CrossSection «FeatureType» HY_Hydrogra p c N et or ý :: HY_ L tudinalSection +channel ..1 1 . 1+ b rofil o n tudinal . + b rofileTransversal . 1 . 1 + b o deredChannel . +upstreamCrossSecti o n . Figure 22 UML class diagram: SurfaceWaterConfines The SurfaceHydroFeature model allows to separately address the water body and the connecting watercourse, or parts of these. It is intended that applications in surface water hydrology, modeling hydraulics and morphology of streams use this model to reference the represented hydrologic feature.

7.7 HY_SubsurfaceHydroFeature

This application schema Figure 23 defines concepts of the hydrology phenomenon below the Earth’s land surface in respect to water accumulated in water bodies below the Earths surface incl. their interaction with surface water bodies without the complexity of the groundwater or soil moisture models. 30 Copyright © 2014 OGC Figure 23 HY_SubsurfaceHydroFeature – Package dependencies