i-Tree
i-Tree is a state-of-the-art, peer-reviewed software suite from the USDA Forest Service that provides urban and rural forestry analysis and benefits assessment tools. The i-Tree tools can help strengthen forest management and advocacy efforts by quantifying forest structure and the environmental benefits that trees provide.
Since the initial release of the i-Tree Tools in August 2006, thousands of communities, non-profit organizations, consultants, volunteers and students around the world have used i-Tree to report on individual trees, parcels, neighborhoods, cities, and even entire states. By understanding the local ecosystem services that trees provide, i-Tree users can link forest management activities with environmental quality and community livability. Whether your interest is a single tree or an entire forest, i-Tree provides data that you can use to demonstrate value and set priorities for more effective decision-making. We invite you to explore this site to learn more about how i-Tree can make a difference in your community or forest.
Developed by USDA Forest Service and numerous cooperators, i-Tree Tools are freely available. The U.S. Forest Service, Davey Tree Expert Company, The Arbor Day Foundation, Society of Municipal Arborists, International Society of Arboriculture, and Casey Trees have entered into a cooperative partnership to further develop, disseminate and provide technical support for the suite.
- Go to i-Tree Planting: mass planting benefits estimation forecasting
- Go to i-Tree Species: find the right tree and plant it in the right place.
- Go to i-Tree Trillion Trees: a collective mapping site for MyTree
- Go to i-Tree Database: help add new tree species to our database.
- Go to i-Tree Landscape: U.S. tree canopy and census information.
- Go to OurTrees: a great way to get fast facts about trees in your community.
- Go to i-Tree Canopy: estimate land cover and tree canopy
- Go to i-Tree Eco: flagship tool that can be used to evaluate existing tree inventory.
- Go to i-Tree Design: full-featured web tool with expanded building interactions and f…
- Go to MyTree: our easiest tool to start with!
Forest Service i-Tree Contacts
- Person
David J. Nowak
Emeritus Research Forester - Person
David Bloniarz
Biological Scientist
Research Highlights
Related Publications
- David J. Nowak. 2021. Understanding i-Tree: 2021 summary of programs and methods
- David J. Nowak. 2020. Understanding i-Tree: summary of programs and methods
- Yang Yang, Theodore A. Endreny, David J. Nowak. 2011. iTree-Hydro: Snow hydrology update for the urban forest hydrology model
- Charity Nyelele, Charles N. Kroll, David J. Nowak. 2022. A comparison of tree planting prioritization frameworks: i-Tree Landscape versus spatial decision support tool
- Jian Lin, Charles N. Kroll, David J. Nowak. 2021. An uncertainty framework for i-Tree eco: A comparative study of 15 cities across the United States
- Rocco Pace, Gabriele Guidolotti, Chiara Baldacchini, Emanuele Pallozzi, Rüdiger Grote, David J. Nowak, Carlo Calfapietra. 2021. Comparing i-Tree Eco Estimates of Particulate Matter Deposition with Leaf and Canopy Measurements in an Urban Mediterranean Holm Oak Forest
- A. Morani, D. Nowak, S. Hirabayashi, G. Guidolotti, M. Medori, V. Muzzini, S. Fares, G. Scarascia Mugnozza, C. Calfapietra. 2014. Comparing i-Tree modeled ozone deposition with field measurements in a periurban Mediterranean forest
- Jian Lin, Charles N. Kroll, David J. Nowak. 2020. Ecosystem service-based sensitivity analyses of i-Tree Eco
- David J. Nowak. 2015. i-Tree and urban FIA—what's the connection?
- Reza Abdi, Theodore Endreny, David Nowak. 2020. i-Tree cool river: An open source, freeware tool to simulate river water temperature coupled with HEC-RAS
- David J. Nowak, Scott Maco, Mike Binkley. 2018. i-Tree: Global tools to assess tree benefits and risks to improve forest management
- Maria Theresa I. Cabaraban, Charles N. Kroll, Satoshi Hirabayashi, David J. Nowak. 2013. Modeling of air pollutant removal by dry deposition to urban trees using a WRF/CMAQ/i-Tree Eco coupled system
- USDA Forest Service. 2021. Research That's For the Birds: Protecting Habitats and Ecosystem Services using i-Tree Tools
- E.G. McPherson. 2010. Selecting reference cities for i-Tree Streets
- Cherie LeBlanc Fisher, David Nowak. 2010. UFORE (i-Tree Eco) Analysis of Chicago


