The feature classes called Hydro Net and Hydro Net Junction contain the geometric network for the Hydrography Dataset with assigned flow direction for flowline features. Hydro_Net is an ESRI utility network, and Hydro Net Junction contains points for all flowline start and end nodes. These are produced when the NHD is extracted from the National Database and the network is given the name Hydro Net.
Each flowline has a junction point at its starting and ending nodes.
This is an example of a dendritic network.
|Dendritic||Random, tree-like branches||Flat-lying sedimentary or homogeneous rock|
|Trellis||Long subsequent streams with short tributaries||Developed in folded rocks of varying strengths|
|Multibasinal, Centripetal||Stream flow toward one or more central region||Interior drainage (sinks), Karst|
|Deranged||Interrupted by swamps and lakes||Glaciated regions|
|Annular||Accurate subsequent stream with short tributaries||Eroded dome or basin containing rocks of varying resistances|
|Radial||Tributaries radiate away from a central region||Central highland|
|Rectangular||Tributaries make right angle bends||Jointed or faulted bedrock|
|Barbed||One or more tributaries enter at an angle >90%||Captured drainage|
|Braided||Multiple interconnected channels separated by braid bars||Sediment load|