Name: Significant Ridgeline

Display Field: TYPE

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Description: Significant ridgelines that have been adopted by several CSDs or Plans within in the unincorporated parts of the county.UPDATE HISTORY:2/27/13 - for the Santa Clarita Valley Area Plan update.9/8/14 - to delete a ridgeline that was taken out per the Agua Dulce CSD that was Adopted by the Board of Supervisors on 3/4/14.10/22/14 - to update ridgelines as a result of the final certification of the Santa Monica Mountains Coastal Plan.11/21/18 - updated for Plum Canyon / Skyline Ranch / North Sand Canyon Annexation. This annexation was effective on 11/15/18, and a link to the official LAFCO annexation document is here.9/9/21 - updated for the adoption of Leona Valley CSD update on 8/10/21 (became effective on this date).12/20/22 - updated for Reorganization (Tesoro Del Valle) between Santa Clarita and Santa Clarita Valley. Effective on 11/14/22.6/21/24 - added ridgelines in the East San Gabriel Valley Area Plan after the adoption of that plan update. For the mapping of these ridgelines, click here.

Copyright Text: County of Los Angeles Department of Regional Planning GIS Section

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• Value: Primary Significant Ridgeline
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• Value: Secondary Significant Ridgeline
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