Urban foresters manage what they can measure, assess, and evaluate. Technological improvements in urban remote sensing, the widespread adoption geographic information systems, and developments in information management systems more broadly are changing the way people and manage woody vegetation. An additional layer of complexity is the array of stakeholder groups (i.e. Parks Departments, community groups, Offices of Sustainability, Planning Departments, urban forestry NGOs, and others), and their overlapping and/or competing interests. Data and maps can form a basis for collaboration. Spatial data on urban forest cover and condition may also reveal environmental injustice, further motivating action to ameliorate uneven outcomes.