DC Estimated Trees

Dataset estimates location and size of trees in the District of Columbia that are not managed by the Urban Forestry Division (https://opendata.dc.gov/datasets/urban-forestry-street-trees/explore). Trees are modeled using an automated feature extraction process applied to 2022 LiDAR data. All data is an estimate, and intended for general representation purposes.

DC 2022 LiDAR was used and processed using the “Extract Trees using Cluster Analysis” script which is included as part of Esri’s 3D Basemap solution. All LiDAR-derived trees within 2 meters of a Urban Forestry Division tree were removed as being duplicates.

Tree diameter (DBH, in inches) was estimated for the LiDAR-derived trees from calculated tree height (in feet) based on the equation: DBH = 0.4003*height - 1.9557. This equation was derived from a statistical analysis of a detailed park inventory tree data set and has an R^2 = 0.7418.

Extreme outliers were also modified, with any DBH larger than 80 inches being converted to a DBH of 80 inches.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://www.arcgis.com/home/item.html?id=b144ccc8c2824ee080e41d0ef5a3f396&sublayer=0
issued 2023-10-17T16:09:57.000Z
landingPage https://opendata.dc.gov/datasets/DCGIS::dc-estimated-trees
license https://creativecommons.org/licenses/by/4.0
metadata_type geospatial
modified 2023-10-17T16:11:19.719Z
old-spatial -77.1197,38.8032,-76.9089,38.9959
publisher City of Washington, DC
resource-type Dataset
source_datajson_identifier true
source_hash 1b4d3865b34387e2a1018d2d468a5c585c0e68d5f75b6c7c717bd49d5b1e5027
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-77.1197, 38.8032], [-77.1197, 38.9959], [-76.9089, 38.9959], [-76.9089, 38.8032], [-77.1197, 38.8032]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • ddot-urban-forestry-division
  • root-zone
  • tree-preservation
  • ufa
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer DDOThub
maintainer_email gisgroup@dc.gov
metadata_created 2025-09-24T22:53:04.616137
metadata_modified 2025-09-24T22:53:04.616144
notes <p style='margin-bottom:9pt; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12.0pt; font-family:&quot;Avenir Next&quot;,serif; color:black;'>Dataset estimates location and size of trees in the District of Columbia that are not managed by the Urban Forestry Division (<a href='https://opendata.dc.gov/datasets/urban-forestry-street-trees/explore' rel='nofollow ugc'>https://opendata.dc.gov/datasets/urban-forestry-street-trees/explore</a>). Trees are modeled using an automated feature extraction process applied to 2022 LiDAR data. All data is an estimate, and intended for general representation purposes.</span></p> <p style='margin-bottom:9pt; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12.0pt; font-family:&quot;Avenir Next&quot;,serif; color:black;'><a href='https://opendata.dc.gov/datasets/da0c156ef3d24607b27a0da418970eac/explore' target='_blank' rel='nofollow ugc noopener noreferrer'>DC 2022 LiDAR</a> was used and processed using the “Extract Trees using Cluster Analysis” script which is included as part of Esri’s 3D Basemap solution. All LiDAR-derived trees within 2 meters of a Urban Forestry Division tree were removed as being duplicates.</span></p> <p style='margin-bottom:9pt; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12.0pt; font-family:&quot;Avenir Next&quot;,serif; color:black;'>Tree diameter (DBH, in inches) was estimated for the LiDAR-derived trees from calculated tree height (in feet) based on the equation: DBH = 0.4003*height - 1.9557. This equation was derived from a statistical analysis of a detailed park inventory tree data set and has an R^2 = 0.7418.</span></p> <p style='margin-bottom:9pt; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12.0pt; font-family:&quot;Avenir Next&quot;,serif; color:black;'>Extreme outliers were also modified, with any DBH larger than 80 inches being converted to a DBH of 80 inches.</span></p>
num_resources 6
num_tags 12
title DC Estimated Trees