New Submerged Aquatic Vegetation Maps Now Available

Hudson River Submerged Aquatic Vegetation (SAV) Maps for 2014 Now Available

Submerged Aquatic Vegetation grows in the Hudson River near Tivoli

GIS maps are now available for imagery taken in 2014 of coverage of native SAV and invasive Trapa natans within the Hudson River Estuary from Troy to Hastings-on-Hudson. The 2014 maps show the reduced coverage of SAV as a result of the damage caused by Hurricanes Irene and Lee in the summer of 2011. The 2014 maps complement the maps from 1997, 2002, and 2007.  An additional SAV mapping product, the Hudson River Estuary Documented SAV, combines the 1997, 2002, 2007 and 2014 mapping layers to provide a management tool that shows areas where SAV currently exists, where it has existed in the past, and where it may return in the future. Because the SAV coverage in 2014 was reduced due to the impacts of Irene and Lee the updated Documented SAV maps are little changed from the version based on 3 years of data. In addition, 2016 aerial imagery is being interpreted. The resulting GIS maps, when completed will provide important information on the status and trends of SAV. Learn more about Hudson River Estuary Mapping here: https://www.hrnerr.org/nerrs-research/habitat-mapping/

The maps can be found at the NYS GIS Clearinghouse. 

New SAV 2014 maps:

https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=1350

Updated Documented SAV layer:

https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=1209