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Series of layers related to an analysis of proposed Zone 0 regulations, which could have a significant impact on the existing tree canopy. |
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Series of layers related to an analysis of proposed Zone 0 regulations, which could have a significant impact on the existing tree canopy. |
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LARIAC, Dudek, County of Los Angeles, Pictometry, EagleView, Cal Fire |
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5000 |
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[] |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-weight:bold;font-size:14pt">Overview:</SPAN></P><P><SPAN STYLE="font-size:12pt">This is an analysis of proposed Zone 0 regulations (presentation link is </SPAN><A href="https://bof.fire.ca.gov/media/54flflkr/wkshp-3-valachovic-presentation_ada.pdf" target="_blank" STYLE="text-decoration:underline;"><SPAN STYLE="font-size:12pt">here</SPAN></A><SPAN STYLE="font-size:12pt">) which calls for the significant removal vegetation within 5 feet of a structure (including the structure itself). Building footprints within a very high fire hazard severity zone were selected out and coded with community names from the Countywide Statistical Areas layer. A buffer of 5 feet (including the building footprint) was run for unincorporated areas and intersected with a tree canopy. This intersection depicts the impact of vegetation removal resulting from the proposed Zone 0 regulations. A summary by community with an acreage breakdown was also generated.</SPAN></P><P><SPAN STYLE="font-size:12pt">This layer feeds into a map service on eGIS servers to display on a Zone 0 web mapping application (click </SPAN><A href="https://experience.arcgis.com/experience/d9cdf20067544c65a6339254098f7f44/page/Home" target="_blank" STYLE="text-decoration:underline;"><SPAN STYLE="font-size:12pt">here</SPAN></A><SPAN STYLE="font-size:12pt">).</SPAN></P><P><SPAN STYLE="font-weight:bold;font-size:12pt">This is a simplified version of the layer to reduce the file size in order to improve map service performance. The simplification tool algorithm used was 'Retain critical bends (Wang-Muller) with a simplification tolerance of 2, and a minimum area of 10 sf.</SPAN></P><P><SPAN STYLE="font-weight:bold;font-size:14pt">Datasets used:</SPAN></P><UL><LI><P><SPAN STYLE="font-size:12pt">Building Outlines - 2023 LAR-IAC dataset</SPAN></P></LI><LI><P><SPAN STYLE="font-size:12pt">Fire Hazards - Combination of existing State Responsibility Area fire hazards and proposed Local Responsibility Area fire hazards. Very High Fire Hazards queried out.</SPAN></P></LI><LI><P><SPAN STYLE="font-size:12pt">Tree Canopy - 2020 dataset from Dudek</SPAN></P></LI></UL><P><SPAN STYLE="font-weight:bold;font-size:14pt">Update History:</SPAN></P><UL><LI><P><SPAN STYLE="font-size:12pt">7/22/25 - layer created and copied to SDE</SPAN></P></LI><LI><P><SPAN STYLE="font-size:12pt">8/3/25 - updated to include non-deciduous tree canopy (not included in previous dataset).</SPAN></P></LI></UL></DIV></DIV></DIV> |
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Zone 0 Analysis 2025: Buildings (2023) - Tree Canopy (2020) - Very High Fire Hazard (proposed) |
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["Buildings","Building Outlines","Zone 0","Fire Hazard","Cal Fire"] |
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en-US |
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150000000 |
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