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2020 Fire Perimeter Assessment of
Bay Area Lands
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Last updated on:9/30/2020
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Lightning Fires. Mid-August lightning ignited fires across the San Francisco Bay Area. For several weeks, all Bay Area counties except San Francisco experienced fire, with burns in Napa, Santa Clara, Santa Cruz, San Mateo, Marin, Alameda, Contra Costa, Sonoma, and Solano counties. These fires include the CZU, SCU, and LNU Lightning Complex Fires, which, sadly, encompassed many rural residential and some urban areas. Here in late-September, all lightning fires in the Bay Area are fully contained, leaving approximately 565,000 acres burned.

Glass Fire. On September 27th, three new fires flared during red flag conditions. These fires merged into the Glass Fire, which is still active as of September 30th and has burned at least 51,000 acres, also including many rural residential areas and some urban areas.

This Workbook. Given the geographic scope and scale of the fires, a regional assessment is needed in order to provide context of the 2020 fire incidents for the many affected land-owning agencies, organizations, and individuals. This workbook contains results of an ongoing GIS overlay analysis to answer initial questions stemming from the fires, such as how much of each habitat type burned in a given area? Which organizations and landowners were affected?

Input. Do you have input, questions, or ideas for us? You can get those to us in three ways:
1) Select the cell that contains information of interest to you and click the 'Insert Comment' button (bubble with a plus sign) in the upper right corner of the tools tab. Insert your comment.
2) Scroll to the end of the workbook to the 'Input' sheet and enter your question, idea, comment in the next available row.
3) Send an email to Tom Robinson at tom@togetherbayarea.org.
Note: This is a work in progress. Additional spreadsheets of information will be added over time.
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