NHD Hydrologic Network Junctions contains points representing NHD hydrographic network junction point and segment extent features. These features can be used to participate within a geometric network or trace network with the NHDFlowline dataset.
Washington State Department of Ecology (2023). Hydrography - NHD Hydrologic Network Junctions [Washington (State)]. . https://geo.wa.gov/datasets/waecy::hydrography-nhd-hydrologic-network-junctions (web service)