Ca. 4th Climate Change Assessment Regions
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Regional boundaries for use by CA Nature to support activities related to Executive Order N-82-20. These include California's 30x30 effort, Climate Smart Land Strategies, and equitable access to open space. This layer is derived from the 4th California Climate Assessment regions, and enhanced using the California County Boundaries dataset (version 19.1) maintained by the California Department of Forestry and Fire Protection's Fire Resource Assessment Program, and the 3 Nautical Mile marine boundary for California sourced from the California Department of Fish and Wildlife.
i03 dwr region offices
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From the DAU boundaries in i03_DAU_county_cnty24k09 dataset: “Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty24k09_1_poly, (*See metadata for CAL-FIRE cnty24k09_1_poly), State of California. The existing DAU boundaries were extracted via cnty24k09_1_poly, Northern Region Office (NRO) via ArcMap 10.1. DAU’s were sent out to: Northern Region Office (NRO), North Central Region Office (NCRO), South Central Region Office (SCRO) and Southern Region Office (SRO) respectively. Collaboration by Department of Water Resources, Region Office personnel, Michael L. Serna, NRO, Jason Harbaugh - NCRO, Cynthia Moffett - SCRO and Robert Fastenau - SRO with the final merge of all data into a cohesive feature class. This version was derived because a preexisting “dau_v2_105 nad27” Detailed Analysis Unit feature class that contained a multitude of variant sliver acreages along all DAU and county boundary lines through-out the State of California. Each Region Office was sent their respective features where they exposed the DAU’s sliver anomalies. They subsequently merged the variant slivers into the proper DAUs. Upon completion, the DAU feature classes were sent back for assemblage. These features are reachable by County\DAU. This allows the county boundaries, the DAU boundaries and the State of California Boundary to match Cal-Fire cnty24k09_1_poly.”