Drainageway EDH Specification Change
Detailed Description
Drainageway features are flowlines delineated where terrain modelling indicates potential headwater drainage but no channel is detectable. The drainageway code must only be applied at the initiation of flowlines or confluence of other drainageway features. The drainageway code must not be applied downstream of other non-drainageway NHD flowlines or waterbody features.
Sources/Usage
Public Domain.