Robert F. Holland John Vollmar Carol W. Witham 20130225 vector digital data Sacramento, CA https://wildlife.ca.gov/Data/BIOS http://www.vernalpools.org/ https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/600_699/ds650.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. Ground truth sampled 25% of the polygons we drew; the double blind protocol lowered our error rate to about 2 percent. We mapped 807,820 acres of vernal pool landscape in 1,909 polygons and present various tabular summaries of polygon number and acreage by recorded attribute. We overlaid our results with a map of Core Recovery Areas (CRAs), finding 452,012 acres within the CRAs, and an additional 120,137 acres immediately contiguous to the CRAs. Map showing the distribution of vernal pools in the Great Valley (California) as of publication of the Recovery Plan for Vernal Pool Ecosystems of California and Southern Oregon (U.S. Fish and Wildlife Service, 2005). Polygons were sketched onto 2005 NAIP imagery by two independent mappers: Carol W. Witham and Robert F. Holland. Maps were reconciled by the mappers on a polygon-by-polygon basis with the best boundaries and attributes for each discussed and chosen before moving onto the next polygon. Note: For an associated dataset showing changes between 2005 and 2010 in some counties please see Vernal Pool Distribution, Merced, Placer & Sac. Counties, 2010 [ds780]. 20050101 ground condition Complete None planned -122.560934 -118.889500 40.691536 35.375931 None Vernal Pools Hogwallows ISO 19115 Topic Category biota environment None Great Valley San Joaquin Valley Sacramento Valley California None 2005 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

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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 10.5.1.7333 Robert F. Holland Carol W. Witham John Vollmar Sacramento, CA Map was produced using heads up digitizing on 2005 NAIP county mosaic imagery. The mapping was done independently by Carol W. Witham and Robert F. Holland. As each county was completed, the two mappers met to reconcile the maps. This reconciliation was done on a polygon-by-polygon basis. Any discrepancies were discussed and the best fitting polygon shape and attribution were determined for each polygon. This reconciliation resulted in each polygon being reviewed at least three times (in the few cases where one of the mappers missed the feature), but usually four times. Minimum Mapping Unit No minimum mapping unit was established prior to mapping. The map therefore suffers from shortfalls related to economy of scale. In small polygons, the mappers were more likely to subtract small cutouts for buildings, corrals or staging areas. In larger polygons, the same size cutout was often overlooked simply because it was small in proportion to the landscape being mapped. N/A Vector GT-polygon composed of chains 1909 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 ds650 Polygons representing vernal pool landscapes and individual vernal pools Witham/Holland SHAPE_Area Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. 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 HABITAT_Notes Notes on habitat observations Witham/Holland 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 Shape Feature geometry. ESRI Coordinates defining the features. 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. 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 Positive real numbers that are automatically generated. GT_Notes Notes taken during ground truth Witham/Holland 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. 20220412 Carol W. Witham Co-author mailing and physical

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