U.S.G.S. Subregion and Accounting Unit. Identifies drainage basin in which a reach resides. This number identifies a main stem, usually comprised of many reaches. Distance measured from the downstream start of the complete segment to the downstream end of the current reach. Downstream node of reach that differentiates between convergent and divergent reach junctions.
Classifies reaches connected to divergent junctions.
The primary name code of reach. The open water name code of reach. The CU of the reach downstream of the current reach. The SEG of the reach downstream of the current reach. The MILE code of the reach downstream of the current reach.