Street tree data are collected during three or four neighborhood workdays, held between June and September. At workdays, volunteers pair off into teams to collect data on tree location, tree type, tree health, site type, site size, and the presence or absence of overhead high voltage wires. Each pair is led by a team leader who has undergone a training in the inventory protocol at the beginning of the summer. Field data are collected on paper maps and data sheets during these workdays, and then entered into an ArcGIS database at the Urban Forestry office by staff and volunteers.
Since the first inventory in 2009, the protocol used for the Tree Inventory Project has evolved to best fit the tree care goals of participating neighborhoods. The most current protocol is available in the 2013 Street Tree Inventory Manual. Following is a list of tools and resources to assist volunteers in collecting data on workdays.
- 2014 Street Tree Inventory Manual
- Team Leader Training presentation
- Data sheet
- Maple cheat sheet
- Homeowner handout on Tree Inventory Project
- Homeowner handout on Street Trees in Unimproved Right-of-Way
- Arborist-on-call handbook