add stub of Seneca Canal

add stub of Seneca Canal

add section of Black River Canal

add section of Black River Canal

start modeling natural=water polygons for Black River Canal above Boonville

start modeling natural=water polygons for Black River Canal above Boonville

fill in Black River Canal north of Rome, add some locks

fill in Black River Canal north of Rome, add some locks

improve black river canal in Rome

fill in Black River Canal north of Rome

extend Black River Canal

extend Black River Canal

extend Black River Canal

extend Black River Canal

add new Black River Canal Sections to relation

move more of Black River Canal from OSM (with permission)

enlarged Erie Canal Prism west of Crescent

add Clinton's Ditch loop near Verona NY

add Oneida Creek Aqueduct for Enlarged Erie Canal

merge black river canal relations