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The New York State Department of Environmental Conservation has added a link to a translation service developed by Microsoft Inc., entitled Bing Translator, as a convenience to visitors to the DEC website who speak languages other than English.

Additional information can be found at DEC's Language Assistance Page.

Forest Health Aerial Survey Program

The state of New York is approximately 30 million acres in area, with 18.9 million acres of that area designated as forest. With such a large area for possible threats by insects, diseases, human activities and weather events, a comprehensive and expedient aerial survey plan was created to monitor for such damages.

photo showing large areas of defoliated forest
Defoliated deciduous trees in summer

Each June the Department of Environmental Conservation teams up with the New York State Police Aviation Unit to conduct a two-month aerial survey of the state's forests. The survey begins in the southern Hudson Valley near Newburgh and ends in the St. Lawrence Lowlands near Plattsburgh. The aerial survey for 2013 accounted for approximately 15 million acres of New York's total area. Sensitive and restricted airspaces, as well as small areas between parallel flight lines (caused by visibility constraints) were not surveyed and account for the remaining area of the state.

The objective of the survey is to collect general information about forest health conditions for dissemination to state regional office foresters and private forest owners, annually. The data is used for forest management and monitoring at the state level, as well as the systemic tracking of possible causal agents, which threaten our forests on a national level.


Current Report

Click on this map to view a larger image.
Map showing areas of defoliation and damage
Click on this link to view a larger image.

2013 Aerial Survey Report (PDF 1.2 MB)

Past Reports

2012 Aerial Survey Report (PDF, 1 MB)

2011 Aerial Survey Report (PDF, 2.1 MB)

2010 Aerial Survey Report (PDF, 2.0 MB)

2009 Aerial Survey Report (PDF, 2.2 MB)


More about Forest Health Aerial Survey Program:

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  • For help with PDFs on this page, please call 518-402-9425.
  • Contact for this Page
  • Division of Lands and Forests
    Forest Health Section
    625 Broadway, 5th FL
    Albany, NY 12233-4253
    518-402-9425
    Send us an email
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