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California Department of Fish and Game <br /> Natural Diversity Database <br /> Full Condensed Report for Selected Elements-Multiple Records per Page <br /> Rana draytonii <br /> California red-legged frog Element Code:AAABH01022 <br /> Status NDDB Element Ranks Other Lists <br /> Federal: Threatened Global:G4T2T3 CDFG Status: SC <br /> State: None State:S2S3 <br /> Habitat Associations <br /> General: LOWLANDS&FOOTHILLS IN OR NEAR PERMANENT SOURCES OF DEEP WATER WITH DENSE,SHRUBBY OR EMERGENT RIPARIAN VEGETATION. <br /> Micro: REQUIRES 11-20 WEEKS OF PERMANENT WATER FOR LARVAL DEVELOPMENT.MUST HAVE ACCESS TO ESTIVATION HABITAT. <br /> Occurrence No.862 Map Index: 64047 EO Index: 64142 Dates Last Seen <br /> Occ Rank: Fair Element: 2009-02-24 <br /> Origin: Natural/Native occurrence Site: 2009-02-24 <br /> Presence: Presumed Extant <br /> Trend: Unknown Record Last Updated: 2009-05-08 <br /> Quad Summary:Clifton Court Forebay(3712175/463D) <br /> County Summary:Contra Costa <br /> LaULong: 37.83073x/-121.602370 Township: 01S <br /> UTM: Zone-10 N4187955 E622992 Range: 03E <br /> Area: 15.0 acres Mapping PrecisionSPECIFIC Section: 24 Qtr:SE <br /> Elevation: 20 ft Symbol Type:POLYGON Meridian: M <br /> Location:ITAILIAN SLOUGH&JUST NW OF THE INTERSECTION OF NORTH BRUNS WAY AND BYRON HWY,WEST OF CLIFTON COURT FOREBAY. <br /> Location Detail:3 LOCATIONS.2003 LOCATION JUST NW OF THE INTERSECTION OF NORTH BRUNS WY&BYRON HWY.2009 LOCATIONS IN ITALIAN SLOUGH <br /> 0.28 MI FROM EACH OTHER. <br /> Ecological:GRASSLANDS AND SWALES.THE ITALIAN SLOUGH CANAL IS TIDALLY INFLUENCED&WATER LEVELS AT LOW TIDE DROP BELOW THE <br /> EMERGENT VEGETATION,WHICH INCLUDES TULE.UPLAND INCLUDES NON-NATIVE GRASSLAND W/PATCHY SCRUB SPECIES&VERNAL <br /> POOLS. <br /> Threat: POSSIBLE THREAT FROM A HIGHWAY SHOULDER IMPROVEMENT PROJECT,BULLFROGS,AVIAN&MAMMALIAN PREDATORS. <br /> General: 2 CRLF'S OBSERVED ON 16 JAN 2003,JUST WEST OF SW 9.2 ADULTS OBSERVED IN CANAL WITH A HYDROLOGICAL CONNECTION TO ITALIAN <br /> SLOUGH ON 24 FEB 2009. <br /> Owner/Manager:CCA COUNTY <br /> Occurrence No.1287 Map Index: 76367 EO Index: 77336 Dates Last Seen <br /> Dec Rank: Good Element: 2009-03-30 <br /> Origin: Natural/Native occurrence Site: 2009-03-30 <br /> Presence: Presumed Extant <br /> Trend: Unknown Record Last Updated: 2009-08-28 <br /> Quad Summary:Clifton Court Forebay(3712175/463D) <br /> County Summary:Contra Costa <br /> LaULong: 37.80488°/-121.60684° Township: 01S <br /> UTM: Zone-10 N4185080 E622641 Range: 03E <br /> Radius: 80 meters Mapping PrecisionSPECIFIC Section: 35 Qtr:NE <br /> Elevation: 80 ft Symbol Type:POINT Meridian: M <br /> Location:STOCK POND 0.12 MILE WEST OF BRUNS RD&CONTRA COSTA/ALAMEDA COUNTY LINE JCT,NE OF THE DELTA PUMPING PLANT.. <br /> Location Detail:0.82 MILE ENE OF BM 14,BETWEEN CLIFTON COURT FOREBAY&BETHANY RESERVOIR. <br /> Ecological:ANNUAL GRASSLAND,AREA USED FOR CATTLE GRAZING.POND APPEARS DEEP ENOUGH TO BE PERENNIAL OR AT LEAST HAVE WATER <br /> LONG ENOUGH FOR LARVAE TO METAMORPHOSE.NOT MUCH VEGETATION FOR EGG DEPOSITION. <br /> Threat: POTENTIAL INVASION BY BULLFROGS. <br /> General: 2 LARVAE AND 2 EGG MASSES OBSERVED ON 30 MAR 2009. <br /> Owner/Manager:DWR <br /> Commercial Version--Dated May 01,2010--Biogeographic Data Branch Page 52 <br /> Report Printed on Thursday,July 01,2010 Information Expires 11/01/2010 <br />