Joe Carboni, California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch 19980601 vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/001_099/ds036.zip This Arc/Info coverage is a polygon layer of vernal pool complexes greater than 40 acres in size for 29 counties throughout the greater Central Valley, and some north bay counties. These data were collected and vernal pool complexes were identified and mapped by Dr. Robert F. Holland in 1995 and refined in a 1998 update. This layer does not contain delineations of individual vernal pools and is not intended for use for wetland delineations or regulatory use. For additional information on the vernal pools mapping projects see the report, Changes in Great Valley Vernal Pool Distribution from 1989 to 1997, June 1998, by Robert F. Holland, Ph.D. It is available online at: http://www.dfg.ca.gov/bdb/wetlands/vp_holland/report_index.htm . WHAT THE DATABASE WAS DESIGNED TO DO. The purpose of this inventory was to map the distribution of extant California Central Valley vernal pool complexes. HOW THE DATABASE WAS DESIGNED TO BE USED. The inventory was designed for use by the U.S. Fish and Wildlife Service to make informed decisions in recovery and planning efforts for listed and sensitive species. HOW DATA WERE COLLECTED. In 1995, Dr. Roberts F Holland interpreted true color aerial slides (the most recent available aerial photos for each county) from the Department of Water Resources. He identified vernal pool complexes on aerial photos (the most recent available for each county which included some from as far back as 1976). Complexes more than 40 acres in size were traced onto USGS 7.5' quads from which they were digitized. Vernal pool complexes were then given a density rating (see field definition for LUCODEOLD in the Entity Attributes section below). The coverage was refined in June, 1998 with SPOT Imagery, recent U2 (high resolution) photography, and with 1:130,000 scale paper plots of the original data laid over SPOT Imagery. The coverage was created using the Arc/Info command 'CREATE', using an existing coverage as a template for cartographic parameters. After the initial setup of the coverage for data input, vernal pool polygon complexes were digitized into the G.I.S. database. The coverage was then built, the tolerances set and the attribute fields added. When the polygon boundaries were refined by Dr. Holland by reviewing the high resolution photographs, the changes were then edited in the G.I.S. database. DATA QUALITY ASSESSMENT. This coverage depicts vernal pool complexes, not individual vernal pools. The density ratings are subjective but were validated with actual point occurrence data of individual vernal pools. (For a copy of the paper "A Comparison of Two Methods of Mapping Vernal Pools contact Monica Parisi at mparisi@dfg.ca.gov.) The validation suggested that 1) dense complexes of vernal pools were being picked up by aerial photo interpretation and 2) the density ratings should not be the sole basis for identifying high priority preserve areas, especially at the local planning level. At the local level, this layer is probably best used for suggesting new areas for regional preserves, areas which may never have been considered because of the lack of information. KNOWN CAVEATS OF THE DATA. * Since the minimum mapping unit of the coverage is 40 acres, it may not provide the level of detail required for larger scale (smaller area, more site specific) conservation planning. * This layer does not contain delineations of individual vernal pools and is not intended for use for wetland delineations or regulatory use. 19760101 19980601 ground condition Complete None planned -123.034784 -118.310884 40.706933 35.115785 None vernal pool distribution complexes ISO 19115 Topic Category environment inlandWaters biota None Amador County Solano County Mariposa County Kings County Glenn County Contra Costa County Colusa County Merced County Alameda County central valley Marin County Fresno County Yuba County Stanislaus County Lake County Sacramento County El Dorado County Calaveras County Napa County Yolo County north bay San Joaquin County Placer County Tuolumne County California Shasta County Madera County Butte County Sonoma County Sutter County Tehama County Kern County None 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.This data-set may not be redistributed without prior written approval from Mr. Joe Carboni, Wetland Inventory Coordinator, California Department of Fish and Game (see Contact section for contact information). Graphic or textual representation of data shall include appropriate references to sources include author (Dr. Robert F. Holland), the U.S. Fish and Wildlife Service, and the California Department of Fish and Game. These data shall not be amended, edited, or revised in an manner or used inappropriately to produce inaccurate, incomplete, or misleading analyses, reports, maps, or related products. All rights in data remain the property of the U.S. Fish and Wildlife Service who reserves the right to revoke use privileges at any time. California Department of Fish and Wildlife, Wildlife and Habitat Data Analysis Branch Joe Carboni (916) 324-3763 Joe.Carboni@wildlife.ca.gov California Department of Fish and Wildlife Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 Permanently joined "usfwsvp2.dbf" using the LUCODE field to the LUCODENEW field of this shapefile so it would contain the VP_DESCRIPTION field. Since the attributes of the LUCODE field was a duplication of what LUCODENEW contained, LUCODE field was deleted. 20091104 California Department of Fish and Game Greg Ewing bios@dfg.ca.gov Vector GT-polygon composed of chains 1918 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 ds36 Vernal Pool Complexes - Central Valley, 1989-1998 [ds36] OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. USFWSVP2_ Polygon identification field. USFWSVP2_I Polygon identification field. LUCODEOLD Status code for each complex of vernal pools 0 CUT_OUT: Polygons that are 'do-nut' holes within vernal pool complexes (e.g., a cultivated field surrounded by habitat). 1 LOW DENSITY: Pools are small, widely and patchily scattered. At least 2 pools and usually 5 or more exist within the delineated complex. 2 MEDIUM DENSITY: Pools are larger, more numerous, and more pervasively scattered, but still patchy within the delineated complex. 3 HIGH DENSITY: Pools are all sizes and numerous. Pools are distributed over the entire delineated vernal pool complex. Also includes large, isolated playa-like pools. 4 CULTIVATED: Pools are present and persist in spite of obvious cultivation, usually of hay crops. 5 DEVELOPED: Pools are present and still visible in spite of subdivision into parcels smaller than minimum mapping size. 6 MITIGATED SITE: The site is a mitigated area consisting within a vernal pool complex. (Not used in this project.) 7 EXTIRPATED: Pools were present in earlier photos, but were gone in 1997 U2 flight photos. 8 DISTURBED DI 1: This is a polygon/delineated complex that fits the criteria of 'density index of 1", but that is disturbed in some way or form. 9 DISTURBED DI 2: This is a polygon/delineated complex that fits the criteria of 'density index of 2", but that is disturbed in some way or form. COUNTY This is the county in which the polygon is contained. SHAPE Feature geometry. ESRI Coordinates defining the features. DATENEW This is the year the check was done with SPOT Imagery and U2 photography. QUAD_NAME Name of USGS quadrangle (24k) where data were originally digitized from. ESRI Coordinates defining the features. DATEOLD This is the year of the photographs used for each county in the original 1195 aerial photo interpretation. LUCODENEW These are the 1997-1998 updates of LUCODEOLD, especially where land use changes have take place. See codes for LUCODEOLD above. Positive real numbers that are automatically generated. VP_DESCRIP Vernal Pool Description 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. 20220325 California Department of Fish and Wildlife, Wildlife and Habitat Data Analysis Branch Joe Carboni (916) 324-3763 Joe.Carboni@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time