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Legend (GeoHub/NHDLine)

NHD Line (0)
Bridge Bridge
DamWeir DamWeir
Flume Flume
Gate Gate
Levee Levee
Lock Chamber Lock Chamber
Nonearthen Shore Nonearthen Shore
Rapids Rapids
Reef Reef
SinkRise SinkRise
Sounding Datum Line Sounding Datum Line
Tunnel Tunnel
Wall Wall
Waterfall Waterfall