High Hazard Zones Viewer App

From 2012-2015 California faced the worst epidemic of tree mortality in modern history. Multiple years of drought, combined with an infestation of native bark beetles, contributed to the death of millions of trees on federal, state, and private lands across California. This viewer was brought to you by the Tree Mortality Task Force (TMTF), which was coordinated by the California Governors office between 2015 and 2018. The TMTF was comprised of multiple agencies, entities and stakeholders working together to address the Tree Mortality crisis. This viewer includes various layers related to the tree mortality problem, including Aerial Detection Survey data (depicting areas of dead trees), High Hazard Zones, tree removal projects, and others.