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American Shad Young of Year Abundance Index

Hudson River Young of Year American Shad Abundance Index

NYSDEC young of year abundance index (geometric mean number of American shad per haul) for American shad collected in the Hudson River.

graph showing the young of year American shad abundance index in the Hudson River

Non-tidal Delaware River Young of Year American Shad Abundance Index

Young of year abundance index (geometric mean number of American shad per haul) for American shad collected in the upper Delaware River. Note sampling did not occur during 2008-2011 due to budgetary restrictions and in 2018 and 2020 due to environmental conditions (i.e. flooding/high water) and COVID restrictions, respectively.