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The Chesapeake Bay SAV Coverage was mapped from digital multispectral imagery with a 25cm GSD to assess water quality in the Bay. Each area of SAV was interpreted from the rectified imagery and classified into one of four density classes by the percentage of cover. Some small beds, particularly along narrow tributaries may not have been distinguishable on the aerial photography. Five years of SAV data where SAV density was greater than 0 were combined and then dissolved to form SAV Habitat polygons. These polygons represent where SAV was located at least once during a five year period from 2017 to 2021. <\/SPAN><\/P> <\/P><\/DIV><\/DIV><\/DIV>",
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