Hydro_GN is the geometric network within AK Hydro that enables various network analyses. Hydro_GN uses the Stream_LN featureclass for the spatial framework the enables spatial relationships between Steam_LN, AWC_PT, Barrier_PT, Dam_PT, FishObservationSite_PT, FishPass_PT, and Hydro_GN_Junctions. This database element is not directly edited and is either controlled by database administrators and the underlying database.