Jason Schwenkler, Geographical Information Center, Director 20191218 vector digital data https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2800_2899/ds2855.zip Vegetation and land use are mapped for the 737,621 acres constituting the Legal Delta portion of the Sacramento and San Joaquin River Delta area. Vegetation mapping is to alliance level when possible, otherwise it is left at group level (based on the National Vegetation Classification Standard, see http://biology.usgs.gov/npsveg/nvcs.html); land use is mapped to Anderson Level 2 classification (see https://pubs.usgs.gov/pp/0964/report.pdf). The map classification is based on a vegetation classification derived from field data collected in summer and fall of 2005 produced by the Vegetation Classification and Mapping Program (VegCAMP) of the Department of Fish and Game. Membership rules for each alliance can be foud at http://vegetation.cnps.org/. 2016 National Agricultural Inventory Program (NAIP) one meter orthoimagery was the baseline imagery used. Google Earth imagery was used as supplemental imagery. Natural vegetation comprises approximately 17 percent of the Delta study area, 65 percent is agriculture and pasture, 10 percent is urban/other and 8 percent is open water.Link to download report: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=174866 For use in assessing existing vegetation and land use conditions in the Delta, to serve as a baseline for monitoring future change, and to analyze changes that have happened to the vegetation in the Delta since 2005, which is the year of the base imagery of the last mapping. Rarity Ranking Rarity ranks for various types in this map have been updated utilizing the NatureServe Conservation Status Assessments Rank Calculator Version 3.186, and are current as of December 13th, 2019. Rarity ranks are subject to change due to changing threats and trends and as ranking methodologies are further refined. Please check CDFW’s Natural Communities page for the most up-to-date rarity ranks (https://www.wildlife.ca.gov/Data/VegCAMP/Natural-Communities). References Buck-Diaz, J., S. Batiuk and J. Evens. 2012. Vegetation Alliances and Associations of the Great Valley Ecoregion, California. California Native Plant Society. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=64011 Hickson, D., Keeler-Wolf, T. and Aerial Information Systems. Vegetation and Land Use Classification and Map of the Sacramento-San Joaquin River Delta. California Department of Fish and Game; 2/2007. [Cited 2019 December 17]. Available from: http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18211 Kreb, Brian, Fintel, Erik, Askim, Laura and Scholl, Luke. Vegetation and Land Use Classification and Map Update of the Sacramento-San Joaquin River Delta. Geographical Information Center, California State University, Chico.; 11/2019. [Cited 2019 December 17]. Available from: http://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=174866 LandIQ. DATASET: Land Use - 2014 - Land IQ (ds2677). Published by the California Dept. of Water Resources. 5/2017. Metadata available: https://map.dfg.ca.gov/metadata/ds2677.html Complete Unknown -121.955328 -121.195356 38.592858 37.616402 ISO 19115 Topic Categories biota farming environment None National Vegetation Classification Standard A Manual of California Vegetation California Wildlife Habitat Relationships Vegetation Habitat None Farming Environment Biota None Sacramento County Yolo County Delta Solano County Alameda County Contra Costa County California Sacramento - San Joaquin Delta San Joaquin County Legal Delta None Recognition that this dataset was created by Chico State Research Foundation-Geographical Information Center, for the Delta Stewardship Council and California Department of Fish and Game. We would also appreciate corrections to the map sent to VegCAMP. Contact VegCAMP LeadLicense: 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. Geographical Information Center Jason Schwenkler Director unknown

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Chico California 95928 US Jason A Schwenkler <jschwenkler@csuchico.edu> VegCAMP, California Dept. of Fish and Wildlife, Biogeographic Data Branch VegCAMP (Vegetation Classification and Mapping Program) Vegetation Classification and Mapping Program mailing and physical

1700 9th Street, 4th Floor

Sacramento California 95811 US (916) 324-9765 VegCAMP@wildlife.ca.gov VegCAMP, California Dept. of Fish and Wildlife, Biogeographic Data Branch VegCAMP (Vegetation Classification and Mapping Program) Vegetation Classification and Mapping Program mailing and physical

1700 9th Street, 4th Floor

Sacramento California 95811 US (916) 324-9765 VegCAMP@wildlife.ca.gov Chico State Research Foundation-Geographical Information Center, for the Delta Stewardship Council and California Deparment of Fish and Game, Vegetation Mapping Program Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 The accuracy assessment was performed via boat for waterside polygons and by foot for landside polygons. A total of 246 assessments were performed between 4/29/2019 and 5/10/2019 following the California Department of Fish and Wildlife protocol. Several of these polygons were removed from the scoring for a variety of reasons such as when the surveyors were only able to view a small portion of a polygon or if there were less than five of that alliance type surveyed. The final producers' score was was 82.8% and the users' score was 80%. Several corrections were made to the map post accuracy assessment and the final user can expect a higher degree of accuracy than reported here. Detailed accuracy assessment results can be found in the report "Delta Vegetation and Land Use Classification Update 2016." Vegetation Classification and Mapping Program, Biogeographic Data Branch California Department of Fish and Game, Sacramento. Link to download report: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=174866 Link to download the dataset from BIOS: ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/2800_2899/ds2855.zip An independent sample was selected to test the accuracy of the major mapped elements in the project. First, a prioritized selection of mapped polygons was created. Polygons were constrained by access: they either fell within parcels contained in the California Protected Areas Database or they intersected publicly accessible roads or were adjacent to accessible stretches of river. All polygons that had been previously surveyed were removed. Next, the allocation was stratified by vegetation type to try to ensure that all vegetation types would receive enough samples to be evaluated for accuracy, and polygons were selected randomly, but constrained to having a minimum distance of 1000 m between polygons of the same vegetation type. Finally polygons that were clearly not accessible were removed and were replaced manually with other polygons. Surveyors did not know the mapped vegetation type of the polygons they were surveying. Each polygon was given a priority level so that the types with the fewest polygons had higher priority. Polygons were delineated using heads-up digitizing via ESRI's ArcMap while using National Agricultural Imagery Program (NAIP) baseline imagery flown at a one meter GSD and rectified to the national standards at a 1:24,000 scale. The following are the minimum mapping units (MMU): the minimum width for all polygons was 10 meters; the minimum area was .25 acres for vegetation polygons, 1 acre for quarries and mining operations, 5 acres for agriculture and urban (sub-MMU agricultural slivers are from an overlay with the Land IQ dataset where no crop data was available). Agricultual water canals and agricultural buildings were included with general agriculture, Pasture and grazing land that didn’t appear to be irrigated was mapped as the California Introduced Annual and Perennial Herbaceous group (CAI) if over 1 acre in size. If pasture was less than 5 acres and appeared to be irrigated, it was usually grouped with agriculture (AGR), unless it was in an urban setting, when it was grouped with urban (URB) (for example, pastures around ranchette housing). If it was irrigated and over 5 acres, it was mapped as AGR. Bare Gravel and Sand (BGS) polygons were delineated when the polygon consisted of < 5% tree cover, <10% shrub cover, <10% herbaceous plant cover, and was over one acre in size. Roads less than 10 meters were dissolved into other polygon types, while roads wider than 10 meters were labeled as Urban or Agriculture depending on their adjacency/proximal location. Major highways were mapped as urban. Tree canopy hanging over roads and water, regardless of road/water width, was mapped as the tree type. None Crop Mapping 2014 developed for CADWR by LandIQ LLC Vector GT-polygon composed of chains 32700 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 ds2855 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features. NVCS_Name The standardized name of the vegetation description compliant with the National Vegetation Classification System, maintained in the Manual of California Vegetation Manual of California Vegetation, Online Edition NVCS_Level The level of the National Vegetation Classification System hierarchy that the vegetation type corresponds to http://usnvc.org/ MapClass Basically the same as the Veg_Classification_Name where goup-level vegetation types, agriculture, urban, water, and mining have acronyms and full names. Geographical Information Center MapClassCode Code used to denote the map class Geographical Information Center GroupCode (Called Group1 in GIC report)NVCS definition: Combinations of relatively narrow sets of diagnostic plant species, including dominants and codominants, broadly similar composition, and diagnostic growth forms. Classification level in between macrogroup and alliance. Group level is coarser than alliance and finer than macrogroup. National Vegetation Classification System (usnvc.org/) IMF Introduced North American Mediterranean woodland and forest Vegetation Alliances and Associations of the Great Valley Ecoregion, CA RWF Southwestern North American riparian evergreen and deciduous woodland Vegetation Alliances and Associations of the Great Valley Ecoregion, CA VRF Vancouverian riparian deciduous forest Vegetation Alliances and Associations of the Great Valley Ecoregion, CA WVO Californian Broadleaf Forest and Woodland Vegetation Alliances and Associations of the Great Valley Ecoregion, CA CSS Central and south coastal California seral scrub Vegetation Alliances and Associations of the Great Valley Ecoregion, CA RIS Southwestern North American introduced riparian scrub Vegetation Alliances and Associations of the Great Valley Ecoregion, CA RWS Southwestern North American riparian/wash scrub Vegetation Alliances and Associations of the Great Valley Ecoregion, CA SSB Southwestern North American salt basin and high marsh group Vegetation Alliances and Associations of the Great Valley Ecoregion, CA CAI Mediterranean California naturalized annual and perennial grassland Vegetation Alliances and Associations of the Great Valley Ecoregion, CA CFG California annual herb/grass Vegetation Alliances and Associations of the Great Valley Ecoregion, CA WDT Western dogwood thicket Vegetation Alliances and Associations of the Great Valley Ecoregion, CA DAM Western North American disturbed alkaline marsh and meadow Vegetation Alliances and Associations of the Great Valley Ecoregion, CA FEM Arid West freshwater emergent marsh Vegetation Alliances and Associations of the Great Valley Ecoregion, CA NRW Vancouverian and Rocky Mountain naturalized perennial grassland and Naturalized warm-temperate riparian and wetland Vegetation Alliances and Associations of the Great Valley Ecoregion, CA SAM Southwestern North American alkali marsh/seep vegetation Vegetation Alliances and Associations of the Great Valley Ecoregion, CA TBM Temperate Pacific tidal salt and brackish meadow Vegetation Alliances and Associations of the Great Valley Ecoregion, CA TFF Temperate freshwater floating mat Vegetation Alliances and Associations of the Great Valley Ecoregion, CA NTF Naturalized temperate Pacific freshwater vegetation Vegetation Alliances and Associations of the Great Valley Ecoregion, CA VPG California vernal pool grassland matrix This was a mapping unit created by Todd Keeler-Wolf to describe areas where native grasslands intertwine with sub-minumum mapping unit vernal pools and swales. VPB Californian mixed annual/perennial freshwater vernal pool / swale bottomland Vegetation Alliances and Associations of the Great Valley Ecoregion, CA WTM California warm temperate marsh/seep Vegetation Alliances and Associations of the Great Valley Ecoregion, CA LSH California-Vancouverian semi-natural littoral scrub and herb vegetation QMG Stripmines, Quarries and Gravel pits Anderson Level II AGR Agriculture URB Urban WAT Water Not a vegetation type. Open water attributes included < 5% tree, <10% shrub, and <10% herbaceous. GroupName The full Group name for the group code HT_CODE_ The average height of the stand. This is a mean/modal value, or the average of the most commonly occurring species in the strata of the group/alliance. Outliers were removed from the average. 1 < 1 meter 2 1-5 meters 3 5-20 meters 4 20-50 m 5 >50 meters SIZE_CATEG The average diameter at breast height. This is a mean/modal value, or the average of the most commonly occurring species in the strata of the group/alliance. Outliers were removed from the average. <1" less than one inch DBH 1-6" one to six inches DBH 6-11" six to eleven inches DBH 11-24" eleven to twenty-four inches DBH > 24" DBH over twenty-four inches DBH PER_HARDWO Percent hardwood was entered as a whole number and is the absolute cover which includes porosity of the canopy. The value of .2 was entered when there was less than 1% cover of hardwoods. CDFW VegCAMP vegetation mapping standards PER_CONIFE Percent conifer was entered as a whole number and is the absolute cover which includes porosity of the canopy. The value of .2 was entered when there was less than 1% cover of conifers. CDFW VegCAMP vegetation mapping standards PER_TREE Percent tree is the sum of percent hardwood and percent conifer. The value of .2 was entered when there was less than 1% cover of trees. PER_SHRUB Percent shrub was entered as a whole number and is the total shrub cover present via birds eye view, which excludes overlapping vegetation from the layer(s) above it in the canopy, and includes porosity CDFW VegCAMP vegetation mapping standards HERB_CODE Herbaceous vegetation was entered via percentage classes. 1 <2% 2 2-9% 3 10-39% 4 40-59% 5 >59% 6 >40% woody This value is for when the sum of shrub cover plus tree cover was over 40%. It is assumed that when the canopy layer is greater than 40% that the understory is not visible enough to be evaluated. PER_TOTAL This is the sum of percent tree, percent shrub, and percent herbaceous. A mean value was chosen from each herbaceous class for this calculation. Example: For the 10-39% herb class a mean value of 25% was added to tree cover and shrub cover to equal total cover. ISOLATED_T Isolated tree was selected when tree cover was present but was less than 5% of the polygon. Y Yes Tree value was <5% RESTORATIO Restoration was chosen when it was clear to the photo interpreter that the land had been restored within the past five years. Older restoration areas become more challenging to differentiate from natural vegetation stands. Yes Yes CLEARING_D Anthropogenic disturbace levels: Man-made disturbance including roads, trails, disking, scrapes INVASIVE_P Relative percentage of invasive species present. Many species that are invasive are not visible via aerial imagery and are most likely under-reported in this dataset. Larger species such as Arundo donax and Cortaderia jubata will have a higher degree of accuracy. GIC Comments_Final These are comments from the photo interpreter. They typically address other species present in the polygon, including invasive species and other codominant or sub-dominant species. Other significant information has been provided here, such as the presence of a bird rookery (mating site). Ortho_NAIP_Year Year of base imagery used for linework. National Agricultural Inventory Program 2016 imagery was used for this current mapping effort. Crop2014 Crop types that were registered or planted as of 2014 (updated by Zhongwu Wang 5/7/2017), The Land Use IQ 2014 dataset was overlaid with the vegetation dataset to populate agriculture land with crop type. The slivers (very small polygons) that reside in this dataset are where there was no vegetation data and no LandIQ data. Oftentimes these were small agricultual roads where the photo interpreter classified them as agriculture (because they were not natural vegetation and more like agriculture than natural vegetation) and the LandIQ classified them as non-agriculture. https://map.dfg.ca.gov/metadata/ds2677.html County County in which the majority of the polygon resides. County data is only present for agricultural polygons that we populated by the Land IQ dataset. Source Originator of data for each polygon attributed. There were two sources for this datase: Geographical Information Center (GIC) at Chico State Research Foundation and Land IQ, LLC. Modified_B Name responsible for the LandIQ dataset update. Date_Data_ LandIQ dataset date. Last_Modif Date of the last update to the 2014 LandIQ dataset. DWR_Standa Department of Water Resources version of crop type UID Unique value given to each polygon CalVegName A crosswalk to the CalVeg vegetation system https://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CalVegCode Code used for a crosswalk to the CalVeg vegetation system https://www.fs.usda.gov/detail/r5/landmanagement/resourcemanagement/?cid=stelprdb5347192 CWHRType Crosswalk to the California Wildlife Habitat Relationships system https://www.wildlife.ca.gov/Data/CWHR/Wildlife-Habitats CWHRCODE Code assigned to the California Wildlife Habitat Relationships type https://www.wildlife.ca.gov/Data/CWHR/Wildlife-Habitats GlobalRank The state rarity ranking of the plant community mapped (only for alliances). Ranks are based on a set of criteria including the rarity of the community (extent and occupancy), the threats that the community is subject to, and any known trends in the quality, size, or quantity of stands within the state. Ranks go from G1 which is critically imperiled/has very few occurrences to G5, when a community is demonstrably secure due to security globally. Ranks G1-G3 are considered rare. NatureServe, http://explorer.natureserve.org/granks.htm StateRank The state rarity ranking of the plant community mapped (only for alliances). Ranks are based on a set of criteria including the rarity of the community (extent and occupancy), the threats that the community is subject to, and any known trends in the quality, size, or quantity of stands within the state. Ranks go from S1 which is most imperiled/has very few occurrences to S5, when a community is demonstrably secure due to security statewide. Ranks S1-S3 are considered rare. NatureServe Rare Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare. Y=Rare, N=Not Rare, U=Unknown 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 NVCS_Alliance Latin name(s) of species characteristic or diagnostic to define the alliance. Manual of California Vegetation (Online) NVCS_Group The standardized name for the group within the National Vegetation Classification System that the vegetation type corresponds to Manual of California Vegetation, 2nd edition NVCS_MG The standardized name for the macrogroup within the National Vegetation Classification System that the vegetation type corresponds to Manual of California Vegetation, 2nd edition Acres Number of acres represented by each polygon 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. Hectares Number of hectares represented by each polygon 20220324 Jason Schwenkler, Geographical Information Center, Director FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time