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Annual National Forest Health Monitoring Reports

Annual Report Cover
State of the Nation’s Forests

Annual report summarizes forest health across the U.S.

Urban Forest. Photo by Lance Cheung, USDA.
Uncovering Urban Forests

Urban trees see a significant proportion of the impacts from invasive pests.

The invasive Asian longhorned beetle. Photo by R. Anson Eaglin, USDA APHIS.
Effects of Forest Fragmentation and Restoration on Invasive Species

Managing invasive species is one of the largest challenges that land managers face.

alt="A Florida torreya tree. Photo by Jerry Oldenettel via Flickr."
A Snapshot in Time of Threats to U.S. Forests

A huge number of insects and diseases have the potential to negatively affect tree species in the United States.

Forest Health Protection Southern Pine Beetle Story Map
Southern Pine Beetle

Explore the story map for Southern Pine Beetle infestations in the South.

Monitoring Survival of Fire-Injured Trees in Oregon and Washington (project WC-F-08-03) 2017

Wildfire and Fire Severity Effects on Post-Fire Carbon and Nitrogen Cycling in Forest Soil (project NC-EM-F-14-1) 2017

Forest Health Monitoring in Southern California: High-temporal Monitoring Using Advanced Image Analysis Techniques (project WC-EM-F-11-01) 2015

Implement Interagency Whitebark Pine Monitoring for the Greater Yellowstone Ecosystem (project INT-EM-F-12-01) 2015

Reburns and Their Impact on Carbon Pools, Site Productivity, and Recovery (project INT-EM-F-11-02) 2014

Resiliency of Ponderosa Pine Forests to Bark Beetle Infestations Following Fuel-Reduction and Forest-Restoration Treatments (project WC-EM-F-11-02) 2014

Effects of Prescribed Fire on Upland Oak Forest Ecosystems in Missouri Ozarks (project NC-F-06-02) 2012

Searching High and Low: Patterns of White Ash Health across Topographic Gradients in the Allegheny Region (project NE-EM-09-02) 2012

The Roles of Fire, Overstory Thinning, and Understory seeding for the Restoration of Iowa Oak Savannas (project NC-F-07-1) 2012

A Test of the Forest Inventory and Analysis Program's Down Woody Material Indicator for Regional Fuel Estimation in the Southern Appalachian Mountains (project SO-F-06-01) 2011

Oak Savanna Restoration in Central Iowa: Assessing Indicators of Forest Health for Ecological Monitoring (project NC-F-04-02) 2011

Bugs and Burns: Effects of Fire on Ponderosa Pine Bark Beetle (Project INT-F-07-02) 2010

Changes in Fragmentation of Western Washington Forest Land (Project WC-EM-08-01) 2010

Evaluating Key Landscape Features of a Climate-Induced Forest Decline (Project WC-EM-07-01) 2010

Documenting the Regional and Local Distribution of Kalmia latifolia and Rosa Multiflora in West Virginia, Ohio, and Pennsylvania Forests along a Soil Fertility Gradient (Project NE-EM-07-02) 2009

Evaluating Elevated Levels of Crown Dieback among Northern White-cedar (Thuja occidentalis L.) Trees in Maine and Michigan: A Summary of Evaluation Monitoring (Project NE-EM-07-01) 2009

Understanding the Effects of Fire Management Practices on Forest Health: Implications for Weeds and Vegetative Structure (Project INT-F-04-01) 2009

Impacts to Bunchgrass Plant Communities from Fires of Low-Burn Intensity (WC-F-06-06) 2008

Investigating the extent, severity, and causes of sugarberry mortality in the Southeastern United States 2021

Advancing broad-scale forest health evaluation and monitoring with rFIA 2020

Composition and Structure of Whitebark and Limber Pine Stands in the Interior West and the Silvicultural Implications (project INT-EM-B-14-01) 2017

Status and Trends of Whitebark Pine Distribution and Health in California, Oregon, and Washington (project WC-EM-B-12-02) 2017

Interactions Among Abiotic and Biotic Factors Affecting the Health of Pine Forests in the Southeastern United States (project SO-EM-B-12-03) 2016

Lichen responses to Experimental Temperature and CO2Enhancement: Implications for Climate Change Monitoring (project NC-EM-B-14-01) 2016

Tree Mortality Estimates and Species Distribution Probabilities in Southeastern United States Forests (project SO-EM-F-10-01) 2016

Determining the Extent of the Invasive Nonnative Ailanthus Tree Using Helicopter Mapping within Appalachian Ohio Oak Forests (project NE-EM-F-11-01) 2015

Investigation of Rapid White Oak (Quercus alba) Mortality within the Ozark Plateau and Adjacent Forest-Prairie Transition Ecoregion (project NC-EM-B-13-01) 2015

Evaluation of Sugar Maple Dieback Trends in the Upper Great Lakes Region (project NC-EM-B-10-02) 2014

Factors Contributing to Shore Pine (Pinus contorta subsp. contorta) Mortality and Damage in Southeast Alaska (project WC-EM-B-12-03) 2014

Investigating Causes of Mortality in Vermont (project NE-EM-B-10-01) 2014

Using LiDAR to Evaluate Forest Landscape and Health Factors and Their Relationship to Habitat of the Endangered Mount Graham Red Squirrel on the Coronado National Forest, Pinaleño Mountains, Arizona (project INT-EM-F-08-02) 2014

Alder (Alnus icana tenuifolia) Mortality Agent Complex Effects on Riparian Zone Habitat (project WC-EM-B-10-01) 2013

Assessing Wildlife Habitat from a Large-Scale Inventory 2013

Use of Forest Inventory Data to Document Patterns of Yellow-Cedar Occurrence, Mortality, and Regeneration in the Context of Climate (project WC-EM-09-02) 2012

Risk Factors for Oak Decline and Regional Mortality Patterns in the Ozark Highlands of Arkansas and Missouri (Project SO-EM-06-04) 2009

Assessment of Black Ash (Fraxinus nigra) Decline in Minnesota (NC-EM-05-02) 2008

Assessment of the Extent, Severity, and Impact of Alder Dieback and Mortality in Alaska (WC-EM-05-04) 2008

Determining what species regenerate in forest stands impacted by Heterobasidion root disease in Wisconsin and Michigan 2020

Assessment and etiology of thousand cankers disease within the native range of black walnut (Juglans nigra) 2019

Impacts of Laurel Wilt Disease on Native Persea Ecosystems (project SO-EM-B-12-05) 2017

Current Health Status of American Beech and Distribution of Beech Bark Disease in Wisconsin (project NC-EM-B-11-01) 2015

Distribution and Intensification of Bur Oak Blight in Iowa and the Midwest (project NC-EM-B-10-01) 2015

Monitoring Plots to Evaluate Spread Characteristics, Stand/Site Attributes, Management, and Disturbance Relationships of Black Stain Root Disease in Douglas-fir Plantations in Northern California (project WC-EM-B-14-03) 2015

Beech Bark Disease in Michigan: Spread of the Advancing Front and Stand-Level Impacts (project NC-EM-09-02) 2014

Beech Seed Orchard Development: Identification and Propagation of Beech Bark Disease-Resistant American Beech Trees (project NE-EM-B-11-03) 2014

Monitoring the Health of Pinus strobiformis: Early Impacts of a White Pine Blister Rust Invasion (project INT-EM-B-10-03) 2013

Multi-State Beech Bark Disease Survey and Beech Scale Resistance (project NE-EM-B-11-01) 2013

Assessment and Etiology of Hickory (Carya spp.) Decline in the Midwest and Northeastern Regions (project NC-EM-07-01) 2012

Impacts of Swiss Needle Cast in the Cascade Mountains of Northern Oregon: Monitoring of Permanent Plots After 10 Years (project WC-EM-B-11-01) 2012

Progression of Laurel Wilt Disease in Georgia: 2009-11 (project SO-EM-08-02) 2012

Thousand Cankers Disease in Tennessee: For How Long? (project SO-EM-B-11-01) 2012

Bacterial Leaf Scorch Distribution and Isothermal Lines (project NC-EM-08-02) 2011

Climate, Canker, and Alder Mortality in the Southern Rockies (INT-EM-04-01) 2009

Monitoring Limber Pine Health in the Rocky Mountains and North Dakota (INT-EM-06-03) 2009

Probabilistic Commodity-Flow-Based Focusing of Monitoring Activities to Facilitate Early Detection of Phytophthora ramorum Outbreaks (project SO-R-08-01) 2009

Tracking Population Loss in Cornus florida Since Discovery of Discola destructiva, Causal Agent of Dogwood Anthracnose in Eastern North America (Project SO-EM-05-01) 2009

Impacts of Swiss Needle Cast on Douglas-fir in the Cascade Foothills of Northern Oregon: 5-year Results (WC-FHM-06-01) 2008

White Pine Blister Rust in Juvenile Western White Pine on State Lands in Washington (WC-EM-04-04) 2008

Broad-scale patterns of forest fire occurrence across the 50 United States and the Caribbean territories, 2020 2021

Broad-scale patterns of forest fire occurrence across the 50 United States and the Caribbean Territories, 2019 2020

Broad-scale patterns of forest fire occurrence across the 50 United States and the Caribbean Territories, 2018 2019

Large-scale patterns of forest fire occurrence across the 50 United States and the Caribbean territories, 2017 2018

Large-scale patterns of forest fire occurrence in the conterminous United States, Alaska and Hawaii, 2016 2017

Large-scale patterns of forest fire occurrence in the conterminous United States, Alaska and Hawaii, 2015 2016

Large-scale patterns of forest fire occurrence in the conterminous United States, Alaska and Hawaii, 2014 2015

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2013 2014

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2012 2013

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2011 2012

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2010 2011

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2009 2010

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2001-08 2009

Large-scale patterns of forest fire occurrence in the conterminous United States and Alaska, 2005-07 2008

Relating lightning data to fire occurrence data 2006

Fire occurrence (2004) 2005

Emerald ash borer infestation in Arkansas: extent, severity, and progression 2020

Legacy effects of emerald ash borer on vegetation in riparian forests and communities of woodboring cerambycid beetles 2020

Vulnerability of Rocky Mountain bristlecone pine to mountain pine beetle 2020

Monitoring Myoporum thrips, Klambothrips myopori (Thysanoptera: Phlaeothripidae), in Hawaii (Project WC-EM-B-10-02) 2018

Conventional Fire Behavior Modeling Systems are Inadequate for Predicting Fire Behavior in Bark Beetle-Impacted Forests (project INT-EM-F-11-03) 2017

Effects of Spruce Beetle (Dendroctonus rufipennis) Outbreaks on Fuels, Carbon, and Stand Structure and Composition in Utah and Western Wyoming (project INT-EM-F-13-02) 2017

Assessing Southern Pine Beetle Risk in the New Jersey Pinelands (project NE-EM-B-12-01) 2016

Detection and Impact of an Invasive Insect Disease Complex, the Polyphagous and Kuroshio Shot Hole Borers, Euwallacea spp., and Their Mutualistic Fungi in Southern California (project WC-EM-F-13-02) 2016

Impact of Southern Pine Beetle on Forest Structure and Fuel Loading in a Wildfire-Prone Landscape (project NE-EM-F-13-01) 2016

Forest Fuels and Predicted Fire Behavior in the First 5 Years after a Bark Beetle Outbreak With and Without Timber Harvest (project INT-EM-F-11-04) 2015

Impact of Bark Beetle Infestation on Fuel Loads and Fire Behavior in "Old Stage" Southwestern Ponderosa Pine (Project INT-EM-F-12-02) 2015

Monitoring Mountain Pine Beetle Life Cycle Timing and Phloem Temperatures at Multiple Elevations and Latitudes in California (project WC-EM-09-02) 2015

The Influence of Mountain Pine Beetle Outbreaks on Carbon Productivity and Storage in Central U.S. Rockies Lodgepole Pine Forests (project INT-EM-B-10-03) 2015

The Impacts of Mountain Pine Beetle (Dendroctonus ponderosae) Outbreaks on Forest Conditions in the Intermountain West (project INT-EM-F-10-03) 2014

Forest Attributes and Fuel Loads of Riparian vs. Upland Stands in Mountain Pine Beetle-Infested Watersheds, Southern Rocky Mountains (project INT-EM-F-11-01) 2013

Bark Beetle Outbreaks in Ponderosa Pine Forests: Implications for Fuels, Fire, and Management (project INT-F-09-01) 2012

Assessing Mortality and Regeneration of Larch (Larix Laricina) after a 1999-2004 Landscape Level Outbreak of the Larch Sawfly (Pristiphora erichsonii) in Alaska (Project WC-EM-08-03) 2010

Assessment of Balsam Woolly Adelgid Damage to Eastern Washington and Oregon Subalpine Fir (Project WC-F-07-01) 2010

Mountain Pine Beetle in Lodgepole Pine: Mortality and Fire Implications (Project INT-F-07-03) 2010

Influence of Bark Beetle-Caused Mortality on Fuel Loadings and Crown Fire Hazard in Southwestern Ponderosa Pine Stands (Project INT-F-07-01) 2009

Connecting Overwintering Success of Eastern Larch Beetle to Health of Tamarack (NC-B-07) 2008

Monitoring eastern white pine decline and its causes in New England and New York through enhanced survey methods 2021

Ecological consequences of mountain pine beetle outbreaks in the Intermountain West 2021

Broad-scale patterns of insect and disease activity across the 50 United States from the National Insect and Disease Survey, 2020 2021

Broad-scale patterns of insect and disease activity across the 50 United States from the National Insect and Disease Survey, 2019 2020

Large-scale patterns of insect and disease activity in the conterminous United States, Alaska, and Hawaii from the national Insect and Disease Survey, 2018 2019

Accuracy assessment of Insect and Disease Survey and eDaRT for monitoring forest health 2020

A forest health retrospective: national and regional results from 20 years of Insect and Disease Survey data 2019

Large scale patterns of insect and disease activity in the conterminous United States, Alaska, and Hawaii from the insect and disease survey, 2017 2018

Using tree canopy cover data to help estimate acres of damage 2018

Large-scale patterns of insect and disease activity in the conterminous United States, Alaska, and Hawaii from the national Insect and Disease Survey, 2016 2017

Post-Hurricane Fuel Dynamics and Implications for Fire Behavior (project SO-EM-F-12-01) 2017

Large-scale patterns of insect and disease activity in the conterminous United States, Alaska, and Hawaii from the national Insect and Disease Survey, 2015 2016

Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national Insect and Disease Survey, 2014 2015

Large-scale patterns of insect and disease activity in the conterminous United States, Alaska, and Hawaii from the national Insect and Disease Survey, 2013 2014

Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national Insect and Disease Survey, 2012 2013

Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national Insect and Disease Survey, 2011 2012

Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national Insect and Disease Survey, 2010 2011

Large-scale patterns of insect and disease activity in the conterminous United States and Alaska from the national insect and disease detection survey, 2009 2010

Large-scale patterns of insect and disease activity in the Conterminous United States and Alaska from the National Insect and Disease Detection Survey Database, 2007 and 2008 2009

Large-scale patterns of insect and disease activity in the Conterminous United States and Alaska, 2006 2008

Emerging forest pest threat: Redbay ambrosia beetle and laurel wilt 2007

Phytophthora ramorum early detection surveys for forests 2007

Insects and disease 2006

Insect and disease activity (2003) 2005