Carol W. Witham Robert F. Holland John Vollmar vector digital data Sacramento, CA http://www.vernalpools.org/ https://www.wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/700_799/ds780.zip We mapped vernal pool distribution within a 21.4 million acre area surrounding the Great Valley from 2005 National Agricultural Imaging Program (NAIP) county photomosaics using ESRI ArcMap 9.x in a double-blind protocol. Each mapped polygon was scored for classes of habitat cover, habitat density, habitat diversity, disturbance cover, and disturbance intensity. We remapped Placer, Sacramento, and Merced counties using 2010 NAIP imagery to calculate rates of habitat loss and gain in the five years since the Vernal Pool Recovery Plan was released. The source of loss or gain was identified for each polygon. Calculate loss and gains of vernal pool habitat between 2005 and 2010 in Merced County, California. Remapping is based on geodatabase 2005GreatValleyVernalPools.mbd. Note: For an associated dataset that shows the changes between 2005 and 2010 in some counties please see Vernal Pool Distribution - Central Valley, 2005 [ds650]. 20100101 ground condition Complete As needed -121.522432 -120.052683 39.027334 36.883920 ISO 19115 Topic Category environment biota None Vernal Pools Hogwallows None California Placer County Sacramento County Merced County None 2010 Public domain 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.Credit authors Carol W. Witham Co-author mailing and physical

1141 37th Street

Sacramento CA 95816-5415 US 916-452-5440 carolwwitham@gmail.com Carol W. Witham, Robert F. Holland and John Vollmar. 2013. 2005 Great Valley Vernal Pool Map, Plus Merced, Placer and Sacramento County Losses 2005-2010. Sacramento, CA. Report prepared for the U.S. Fish and Wildlife Service's and Bureau of Reclamation's CVPIA Habitat Restoration Program under Grant Agreement No. 80270-A-G509 with the USFWS. Unclassified Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 John Vollmar Robert F. Holland Carol W. Witham Sacramento, CA Vector GT-polygon composed of chains 911 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 ds780 Remapping of vernal pools in Merced County, California Witham/Holland OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. ESRI Coordinates defining the features. FEATURE Vernal pool matrix or individual pool. Witham/Holland 0 Vernal pool matrix 1 Individual vernal pool COVER_VPs Cover of vernal pools by cover class. Witham/Holland 0 <2% cover of vernal pools 1 2-5% cover of vernal pools 2 5-10% cover of vernal pools 3 >10% cover of vernal pools 4 100% (individual pool / stockpond) DENSITY_VPs Qualitative density assessment. Witham/Holland 0 Low 1 Medium 2 High DIVERSITY_VPs Qualitative diversity assessment. Witham/Holland 0 Low 1 Medium 2 High NUMBER_LargePools Number of large pools per polygon. Witham/Holland 0 None in polygon 1 <1 per 640 acres 2 1-3 per 640 acres 3 4+ per 640 acres DISTURBANCE_Area Cover of disturbance by cover class. Witham/Holland 0 <1% of polygon 1 1-5% polygon 2 5-25% of polygon 3 25-50% of polygon 4 50-99% of polygon 5 100% of polygon DISTURBANCE_Type Dominant type of disturbance. Witham/Holland 0 None / unknown 1 Plowing, disking or grading 2 OHV use 3 Ranch roads 4 Paved roads 5 Ag runoff (altered hydrology) 6 Agricultural residential 7 Managed wetlands (duck ponds) 8 Mitigation banks (created vernal pools) DISTURBANCE_Intensity Qualitative assessment of intensity of disturbance. Witham/Holland 0 Low 1 Medium 3 High CONVERTED_2010 CONVERTED_To HABITAT_Notes Notes on habitat observations. Witham/Holland CONVERTED_Notes MAPPING_Notes Notes used during heads up digitizing. Witham/Holland COUNTY County in which habitat polygon occurs. Witham/Holland Coordinates defining the features. Visited Annotation of whether or not a polygon was visited during ground truth. Witham/Holland 0 Not visited 1 Visited Observed Observed condition during ground truth Witham/Holland 0 Not visited 1 Habitat extant 2 Converted to hay ground 3 Converted to orchard 4 Converted to vineyard 5 No vernal pools, but clay flats (REMOVED) 6 Bare plowed ground 7 Lots of topo, no vernal pools (REMOVED) 8 Converted to alfalfa 9 Alkali sink, no pools observed from road 10 Converted to intensive ag 11 No vernal pool habitat (REMOVED) 12 Converted to urban/commercial GT_Notes Notes taken during ground truth Witham/Holland Acres Acres calculated from Shape_area. Witham/Holland Calculated as Shape_area/4046.825 m2/acre 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. Attribute values for each field are contained within the geodatabase. Description of the geodatabase structure and attributes may be found in: Carol W. Witham, Robert F. Holland and John Vollmar. 2013. 2005 Great Valley Vernal Pool Map, Plus Merced, Placer and Sacramento County Losses 2005-2010. Sacramento, CA. Report prepared for the U.S. Fish and Wildlife Service's and Bureau of Reclamation's CVPIA Habitat Restoration Program under Grant Agreement No. 80270-A-G509 with the USFWS. 20220412 Carol W. Witham Co-author mailing and physical

1141 37th Street

Sacramento CA 95816-5415 US 916-452-5440 cwitham@ncal.net FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time