CDFW Vegetation Classification and Mapping Program 20200722 vector digital data Thorne JH, RM Boynton, A Merritt, SK Rice, E Kalalipour, J Patrick. 2019. The 2016 update to the Napa Vegetation Map of 2004. University of California, Davis. ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2800_2899/ds2899.zip https://www.wildlife.ca.gov/Data/BIOS The earlier map used black and white digital orthophoto quadrangles from 1993, with a pixel resolution of 3 meters. This image was delineated using a heads up digitization technique produced by ASI (Aerial Services Incorporated). The resulting polygons provided vegetation and landcover attributes following the classification system used by California State Department of Fish and Wildlife mappers in the Manual of California Vegetation. The 2004 effort included a brief field campaign in which surveyors drove accessible roads and verified or corrected the dominant vegetation of polygons adjacent to roadways or visible using binoculars. There were no field relevé or rapid assessment plots conducted. This updated version uses a 2016 edition of 1 meter color aerial imagery taken by the National Agriculture Imagery Program (NAIP; https://www.fsa.usda.gov/programs-and-services/aerial-photography/imagery-programs/naip-imagery/index) as the base imagery. It therefore permits an assessment of the change in the patterns of vegetation over 23 years in the county.In consultation with the county we decided to use similar methods to the previous mapping effort, in order to preserve the capacity to assess change in the county over time. This meant forgoing recent data and innovations in remote sensing such as were used in a concurrent project that mapped Sonoma County including the use of LiDAR and Ecognition’s segmentation of imagery to delineate stands. However, the use of such technologies would have made it more difficult to track land cover change in Napa county, because differences in publication dates would not be definitively attributable to actual land cover change or changes in methodology. The overall cost of updating the map in the way was approximately 20% of the cost of the Sonoma vegetation mapping program.Therefore, we started with the original map, and on-screen inspections of the polygons to determine if change had occurred. If so, the boundaries and attributes were modified in the new edition of the map. We also used the time series of imagery available on Google Earth, and the high resolution imagery available through ArcMap to further inspect many edited polygons. We conducted 3 rounds of quality assessment/quality control exercises. Funding was not available to do field assessments, but we incorporated field expertise for the Angwin Experimental Forest, reviewed vegetation types identified in the Knoxville Wildlife Area from a 2014 map incorporating 29 of them, and used overlap with the Sonoma Vegetation Map to assess some polygons thought to contain redwood trees (Sequoia sempervirens) along the western side of Napa County.The Angwin Experimental Forest was mapped by Peter Lecourt from Pacific Union College. He identified several polygons of redwoods in what are potentially the eastern-most extent of that species. We reviewed those polygons with him and incorporated some of the data from his area into this map.The 2014 Knoxville Vegetation map was developed by California Department of Fish and Wildlife. It was made public in February of 2019, close to the end of this project. We reviewed the map, which covers part of the northeast portion of Napa County. We incorporated polygons and vegetation types for 18 vegetation types including the rare ones, we reviewed and incorporated some data for another 6 types, and we noted in comments the presence of another 5 types. There is a separate report specifically addressing the incorporation of this map to our map.Dr Amber Manfree has been conducting research on fire return intervals for parts of Napa County. In her research she identified that large piles of rocks are created when vineyards are put in. These are mapable features. She shared the locations of rock piles she identified, which we incorporated into the map.The Sonoma Vegetation Map mapped some distance into the western side of Napa County. We reviewed that map’s polygons for coast redwood. We then examined our imagery and the Google imagery to see if we could discern the whorled pattern of tree branches. Where we could, we amended or expanded redwood polygons in our map.The Vegetation classification systems used here follows California’s Manual of California Vegetation and the National Vegetation Classification System (MCV and NVCS). We started with the vegetation types listed in the 2004 map. We predominantly use the same set of species names, with modifications/additions particularly from the Knoxville map. The NVCS uses Alliance and Association as the two most taxonomically detailed levels. This map uses those levels. It also refers to vegetation types that have not been sampled in the field and that has 3-6 species and a site descriptor as Groups, which is the next more general level in the NVCS classification.We conducted 3 rounds of quality assessment/quality control exercises. Napa County has used a 2004 edition vegetation map produced using the Manual of California Vegetation classification system (Thorne et al. 2004 ) as one of the input layers for land use decisions and policy. The county decided to update the map because of its utility. A University of California, Davis (UCD) group was engaged to produce the map. The new version was delivered to the county on 4, June 2019. Complete Unknown -122.655953 -122.056671 38.870170 38.146114 None Alliance level, vegetation mapping, Napa, California, Napa County, Vegetation, biota, environment ISO 19115 Topic Categories biota environment None Napa County, California None DFW appreciates learning how vegetation datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates. Please contact Diana Hickson by email (Diana.Hickson@wildlife.ca.gov) or by phone at 916-327-5956.License:This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. University of California, Davis James Thorne jhthorne@ucdavis.edu CDFW Vegetation Classification and Mapping Program Rosie Yacoub GIS analyst 916-322-1990 Rosalie.Yacoub@wildlife.ca.gov CDFW Vegetation Classification and Mapping Program VegCAMP (Vegetation Classification and Mapping Program) Program Lead VegCAMP (Vegetation Classification and Mapping Program) mailing and physical

1700 9th Street, 4th Floor

Sacramento CA 95811 (916) 324-9765 VegCAMP@wildlife.ca.gov CDFW Vegetation Classification and Mapping Program VegCAMP (Vegetation Classification and Mapping Program) Program Lead VegCAMP (Vegetation Classification and Mapping Program) mailing and physical

1700 9th Street, 4th Floor

Sacramento CA 95811 (916) 324-9765 VegCAMP@wildlife.ca.gov Primary author: James H. Thorne, Department of Environmental Science and Policy, UC Davis UC Davis update team: James H. Thorne, Ryan M. Boynton, Anne Merritt, Sloane K. Rice, Emad Kalalipour, Jillian Patrick Secondary author and data steward: Matt Lamborn and Andy Eaman, Napa County Planning, Building, & Environmental Services Department Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 35244 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds2899 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. NVCSName The NVC-compliant name of the vegetation description used in the Manual of California (http://vegetation.cnps.org/). Since the NVCS does not have categories for human land use or otherwise unvegetated land, those descriptions were drawn from the California Wildlife Habitat Relationship Manual of California Vegetation NVCSLevel The standardized level of the vegetation description used in the National Vegetation Classification System (see hhttp://vegetation.cnps.org//). A Manual of California Vegetation MapClass The finest level of vegetation type mapped (alliance, group or macrogroup); or land use for polygons that are not natural vegetation, per the mapping classification. The 2016 update to the Napa Vegetation Map of 2004 MapClassCode Code for each vegetation/land use type mapped. MapClassCodes are defined in the MapClass field. The 2016 update to the Napa Vegetation Map of 2004 SIMPLIFIED Generalized vegetation or land use type. Includes Agriculture, Coniferous forest, Developed, Grassland, Oak woodlands, Riparian woodland, Rock outcrop, Shrubland, Streams and reservoirs, Wetlands, and Other The 2016 update to the Napa Vegetation Map of 2004 AREA_ACRES Area of the polygon calculated in GIS Napa County Vegetation SIZE_ Modal size class (DBH) – for tree-dominated cover types only 1 = Seedlings (less than 1’) 2 = Saplings (1-6’) 3 = Pole (6-11’) 4 = Small (11-25’) 5 = Medium – Large (Greater than 25’) 6 = Multi Layered Medium to Large Tress over smaller trees in Densities > 60% 9 = Not applicable https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=102342&inline DENSITY the relative cover of the dominant life form being mapped: Tree, Shrub, or Herbaceous 1 = > 60% 2 = 40-60% 3 = 25-40% 4 = 10-25% 5 = 2-10% The 2016 update to the Napa Vegetation Map of 2004 WUI Wildlife/Urban Interface code: If urban (housing/buildings) is within a polygon with a vegetation PI code, it was given a WUI Code: 1 = High Density Urban 2 = Medium Density Urban 3 = Low Density Urban 4 = Campground The 2016 update to the Napa Vegetation Map of 2004 BURN_TYPE Whether a polygon was full or partially burned by a recent fire The 2016 update to the Napa Vegetation Map of 2004 BURN_DATE The year of the most recent fire to burn a polygons The 2016 update to the Napa Vegetation Map of 2004 GDE Whether a vegetation type is potentially or likely groundwater dependent. These codes are assigned per vegetation type, not polygon by polygons. Groundwater Dependent Ecosystems as identified in Table 4-8 of the Napa Valley Groundwater Sustainability - A Basin Analysis Report. The determination was made 13/16/2016 for the Basin Analysis Report. Napa Co. PBES, in conjunction with Luhdorff and Scalmanini, Consulting Engineers NAPA_2004_NAME The name of the vegetation in the previous map (1993 imagery, 2004 mapping) The 2016 update to the Napa Vegetation Map of 2004 NEW_CLASS The vegetation type is new for the 2016 Update The 2016 update to the Napa Vegetation Map of 2004 NapaVegPolyID Unique identifier for the polygon The 2016 update to the Napa Vegetation Map of 2004 WQTPO_covertype The Napa County Water Quality and Tree Protection Ordinance (WQTPO), adopted April 9, 2019, requires added protection for canopy and understory vegetation classes in certain parts of the county. This field classifies vegetation types as either "canopy", "understory", or "other". Napa County Water Quality and Tree Protection Ordinance Shape Feature geometry. Esri Coordinates defining the features. CalVegName A crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192. US Forest Service, Region 5 Existing Vegetation CalVegCode A crosswalk to the CalVeg vegetation system. Note that there may be a one-to-many relationship between CalVeg and NVCS. See http://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192. US Forest Service, Region 5 Existing Vegetation CWHRType A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/, and the code chosen here was determined to be the best estimation for this area. California Department of Fish and Wildlife, CWHR CWHRCode A crosswalk to the California Wildlife Habitat Relationships system. Note that there is usually a one-to-many relationship between CWHR and NVCS. See http://www.dfg.ca.gov/biogeodata/cwhr/. California Department of Fish and Wildlife, CWHR GlobalRank The global rarity rank of the plant community (only for polygons mapped to the alliance level). G1: Fewer than 6 viable occurrences and/or 2000 acres worldwide; G2: 6-20 viable occurrences and/or 2000-10,000 acres worldwide; G3: 21-100 viable occurrences and/or 10,000-50,000 acres worldwide; G4: Greater than 100 viable occurrences and/or greater than 50,000 acres worldwide; G5: Community demonstrably secure due to secure worldwide abundance. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf NatureServe and Heritage Network StateRank The state rarity rank of the plant community (only for polygons mapped to the alliance level). S1: Fewer than 6 viable occurrences and/or 2000 acres statewide; S2: 6-20 viable occurrences and/or 2000-10,000 acres statewide; S3: 21-100 viable occurrences and/or 10,000-50,000 acres statewide; S4: Greater than 100 viable occurrences and/or greater than 50,000 acres statewide; S5: Community demonstrably secure due to secure statewide abundance. See: http://www.natureserve.org/sites/default/files/publications/files/natureserveconservationstatusmethodology_jun12_0.pdf NatureServe and Heritage Network Rare Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare. See https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities. Types marked "LR" are unranked types which were listed as "Sensitive Biotic Communities" by Napa County. Sensitive biotic communities in the County were identified using a two-step process: 1. An existing list of sensitive biotic communities prepared by the DFG (2003a) was first reviewed by senior Jones & Stokes biologists, and those communities that may occur in the County were identified. Because the community names in the DFG list (2003a) did not correspond directly with the names used in the Land Cover Layer, a determination was made as to which land cover types on the Land Cover Layer correspond to the communities on the DFG list. 2. The areal extent of each land cover types mapped in the County was generated from the land cover layer. Those biotic communities with an areal extent of less than 500 acres in the County (approximately 0.1% of the County) were identified. These communities were discussed with local experts and their conservation importance established. Those that were not already on the original DFG list and that were determined to be worthy of conservation were added to the list. California Department of Fish and Wildlife, VegCAMP CaCode California Natural Community Codes - unique code assigned to alliances and associations. California Department of Fish and Wildlife, VegCAMP NVCSAlliance The NVC-compliant name for the alliance as described in the Manual of California Vegetation (see http://vegetation.cnps.org/) http://vegetation.cnps.org/ NVCSGroup The standardized name for the group within the 2008 National Vegetation Classification System. See http://usnvc.org/. http://usnvc.org/ NVCSMG The standardized name for the macrogroup within the 2008 National Vegetation Classification System. See http://usnvc.org/. http://usnvc.org/ Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Note: certain fields have been added by the Department of Fish and Game's Vegetation Classification and Mapping Program. These include crosswalks to the Wildlife Habitat Relationships and CalVeg classification systems, Global and State Ranks, CaCode and the fields relating the mapping units to the National Vegetation Classification System as it is described for California in the online edition of the Manual of California Vegetation. 20220705 CDFW Vegetation Classification and Mapping Program Rosie Yacoub GIS analyst 916-322-1990 Rosalie.Yacoub@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time