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2012 National Insect & Disease Risk Maps/Data

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Overview

The links below provide access to key data products:

• Zip files with downloadable GIS raster data 

(ArcINFO GRID format) 

• Information on how to access NIDRM map and 

image services 

• Downloadable tabular summaries (MS Excel 

format) 

download report

GIS Data Downloads

Within each zip file* is an ArcINFO workspace that includes the 

relevant raster data (GRID format), a README file that explains 

the file naming conventions, and layer files for default 

symbolization. Each raster dataset includes embedded 

metadata. The Data Dictionary describes these datasets.

*Please keep your web browser window open and allow extra 

time when downloading large zip files.

DATA DICTIONARY 50 KB

CONTIGUOUS US PREVIEW ZIP

Hazard by agent-Eastern pests 32 KB 295 MB

Hazard by agent-Western pests 32 KB 213 MB

Hazard by agent- Pests that span L48 32 KB 140 MB

Composite hazard from all pests 13 KB 97 MB

Hazard by host tree species 36 KB 181 MB

Treed area, Total basal area 13 KB 87 MB

ALASKA ZIP

All NIDRM GIS raster datasets 50 KB 68 MB

HAWAII ZIP

All NIDRM GIS raster datasets 25 KB 8 MB

Map and Image Services

Map services provide ready to use map layers with fixed 

symbology while image services provide a wider range of 

flexibility such as data download and customizable symbology. 

For an overview of these map and image services including 

instructions for their access please download the Map & Image 

Services Intro/Overview file.

MAP & IMAGE SERVICES INTRO/OVERVIEW 2.6 MB

Tabular Data Downloads 

Click links below to download Excel workbooks that summarize 

NIDRM 2013 – 2027 outputs by National Forests and National 

Parks.

2012 National Insect & 

Disease Risk Maps/Data

2012 National Insect & 

Disease Risk Map Viewer

Insect and Disease Aerial 

Detection Surveys (ADS) 

National Forest Damage 

Agent Range Maps

Forest Pest Conditions 

SPB Hazard Maps 

Invasive Pest Risk Maps

FHTET Products - 2012 National Insect and Disease Risk Maps Page 1 of 2

http://www.fs.fed.us/foresthealth/technology/nidrm2012.shtml 12/3/2014
National Forest Summaries 725 KB

National Park Summaries 732 KB

Watershed Summaries 

Click links below to download ArcGIS 10.1 file geodatabases that 

summarize NIDRM 2013-2027 outputs by 6th level (12-digit) 

Hydrologic Unit Code (HUC) watersheds. The geodatabase tables 

summarize composite hazard, as well as breakouts by individual 

insect or disease and by host tree species that can be joined to 

the included 6th level HUC watershed polygons Note: This 

summary is based on a 2010 version of the 6th level HUC 

watershed dataset and tables will not properly join to more 

recent 6th level HUC versions.

CONTIGUOUS US PREVIEW ZIP

Geodatabase with HUC 12 polygons 55 KB 592 MB

ALASKA ZIP

Geodatabase with HUC 12 polygons 54 KB 65 MB

HAWAII ZIP

Geodatabase with HUC 12 polygons 32 KB 1.3 MB

CONTIGUOUS US & ALASKA OVERVIEW XLSX

An Excel spreadsheet summarizing NIDRM risk and surveyed 

pest damage for HUC6 watersheds (2010 version) intersecting 

US National Forest units is available below. 

NFS Subwatersheds 14 KB 3 MB

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Contact 

Frank Krist 

GIS & Spatial Analysis Program Manager 

Email: fkrist@fs.fed.us

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FHTET Products - 2012 National Insect and Disease Risk Maps Page 2 of 2

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