Trees Count
Free urban trees inventory app now available on iTunes and Google Play.
Understand your Canopy
The first step in working toward a tree canopy goal is understanding what you have. Thanks to the investments of Chesapeake Bay Program partners, we are fortunate to now have ready access to “wall-to-wall” high resolution land cover/land use data for the entire watershed, for the 2013/14 and 2017/18 time periods. Updated data based on 2021/2022 imagery are anticipated in 2024.
New county fact sheets are now available for all Chesapeake watershed counties sharing tree cover status, benefits (from i-Tree) and change information over the 2013/14 to 2017/18 time periods. Use the map viewer below to find your county’s fact sheet. Municipal fact sheets will be produced later in 2023.
Visit the Data Guide for more information on the data sources included in the fact sheets, as well as additional resources. Access to land use/land cover map viewers, GIS datasets, and detailed methods documentation are available from Chesapeake Conservancy.
Find your County Tree Cover Fact Sheet
Featured Resources
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Tree Cover Fact Sheet Data Guide
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Chesapeake Land Cover/Land Use Data & Viewers
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Tree Equity Score Mapping Tool
Learn more »
Resources & Stories
Urban Forest Assessments Resource Guide
Urban forest assessments are a key tool to help quantify the benefits
that trees and urban forests provide, advancing our understanding of these valuable resources.
Strategic Green Infrastructure Planning
Developing strategies for protecting and conserving ecological and cultural assets through environmentally-sensitive decisions, lifestyles, and planning.
Webinar: i-Tree Landscape
Learn how to use the i-Tree Landscape tool which combines ecosystem services calculations, demographic data and high resolution tree canopy data for the Chesapeake Bay watershed.
Chesapeake High-Res Land Cover Data
Learn about and download high resolution land cover data (2013), including tree canopy, produced by the Chesapeake Bay Program partnership for the entire watershed.
Video: Intro to Urban Tree Canopy Assessments
Short video with helpful graphics illustrating the purpose and value of UTC assessments
DC: Using leading edge tools to manage our Capital’s canopy
DC has created a suite of applications and is producing a tree inventory to engage the public in tree stewardship and ensure an enduring canopy.
Baltimore: First urban tree canopy change analysis completed
A recent UTC change analysis of Baltimore, Maryland, showed that tree cover in the city increased from 27 to 28 percent over an eight-year period.
Delaware: State develops Community Tree Canopy Online Tool
The State of Delaware has taken the initiative to make high-resolution imagery more accessible by creating the Community Tree Canopy online tool.
PATreeMap – 40,700 trees and counting!
The Pennsylvania Community Tree Map (PATreeMap) is a free, online cloud-based mapping tool for conducting and storing tree inventories at the local level.
PA Community Tree Map
This tool gives Pennsylvania communities the ability to conduct tree inventories, monitoring activities, and urban tree canopy analyses, as well as track tree maintenance and stewardship activities. View webinar to learn how to use it.
DC Urban Tree Canopy Story Map
A Story Map in ArcGIS Online of how the Nation’s Capital created and maintained a urban tree canopy program and how it has worked and changed over time.
Webinar: The Science and Future of i-Tree
In this webinar, the science of each i-Tree tool is described and the latest and upcoming i-Tree developments are discussed.
Conducting a Community Tree Inventory
Penn State Extension’s Forest Resources describes the process of conducting a tree inventory and the four phases it can be divided into: planning, implementation, application, and maintenance.
Urban Forest Management Plan Toolkit
This toolkit provides information on the steps and what goes into making an urban forest management plan.
Urban Tree Canopy Assessments
Learn more about the Urban Tree Canopy Assessment program and find links to assessment reports.
