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12/9/2019 ESD Printable Report <br /> (8)ROCKY FORD 2 SE[USC00057167],Otero County CO 81067.Period of record 1981-2010 <br /> (9)TACONY 13 SE[USC00058157],Pueblo County CO 81025.Period of record 1981-2010 <br /> (10)TIMPAS 13 SW[USC00058290],Otero County CO 81059.Period of record 1981-2010 <br /> (11)LA JUNTA MUNICIPAL AP[USW00023067],Otero County CO 81050.Period of record 1981-2010 <br /> (12)PUEBLO MEM AP[USW00093058],Pueblo County CO 81001.Period of record 1981-2010 <br /> Influencing Water Features <br /> There are no water features associated with this site. <br /> Wetland <br /> Descri i n <br /> (Cowardin System) <br /> System Subsystem Class <br /> None N/A N/A <br /> Representative Soil Features <br /> The soils of this site are moderately deep,deep,and very deep.They are moderately well drained or well drained with moderate or <br /> moderately slow permeability.They formed on interfluves,fan remnants,terraces,ridges,hillslopes,and pediments.The surface layer <br /> thickness ranges from 4 to 10 inches thick.The soil moisture regime is ustic aridic.The soil temperature regime is mesic.Soils in LRUs A <br /> and B are mostly Aridisols.Soils in LRU C are mostly Alfisols.Commonly the calcium carbonate equivalent(CCE)for the B horizons for <br /> soils in MLRA 69 ranges from 5 to 30 percent.Most of the soils in LRU A and B have a calcic horizon(CCE equal to or greater than 15%). <br /> Major soil series correlated to this ecological site include:Almagre,Bacid,Fort,Kim,Kimera,Manvel,Minnequa,Villedry,and Wilid.There <br /> are other soil series that are correlated to Loamy Plains.However they have been converted to cropland or may be obsolete. <br /> Note:Revisions to soil surveys are on-going.For the most recent updates,visit the Web Soil Survey,the official site for soils information: <br /> hftp://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx <br /> Type of parent material include old alluvium,eolian deposits,loess,slope alluvium,slope alluvium over residuum weathered from limestone <br /> and shale,loess over residuum weathered from sandstone.Parent material origin is from mixed sources. <br /> The attributes listed below represent 0-40 inches in depth or to the first restrictive layer. <br /> Parent materials <br /> Kind:Alluvium,Eolian deposits,Loess <br /> Surface texture:(1)Loam <br /> (2)Silt loam <br /> (3)Clay loam <br /> Subsurface texture group:Loamy <br /> Minimum Maximum <br /> Surface fragments­3"(%cover): 0 0 <br /> Surface fragments>3"(%cover): 0 0 <br /> Subsurface fragments<=3"(%volume): 0 25 <br /> Subsurface fragments>3"(%volume): 0 3 <br /> Drainage class:Moderately well drained to well drained <br /> Permeability class:Moderately slow to moderate <br /> Minimum Maximum <br /> Depth(inches): 20 80 <br /> Available water capacity(inches): 4.00 9.00 <br /> Electrical conductivity(mmhos/cm): 0 8 <br /> Sodium adsorption ratio: 0 10 <br /> Calcium carbonate equivalent(percent): 0 40 <br /> Soil reaction(1:1 water): 6.6 9.0 <br /> Soil reaction(0.01 M CaCl2): 6.6 9.0 <br /> Plant Communities <br /> Ecological Dynamics of the Site <br /> The information in this ESD,including the state-and-transition model(STM),was developed using archeological and historical data, <br /> professional experience,and scientific studies.The information is representative of a complex set of plant communities.The plant composition <br /> has been determined by study of rangeland relic areas,areas protected from excessive disturbance,seasonal use pastures,short <br /> duration/time controlled grazing strategies,and historical accounts. <br /> Not all scenarios or plants are included.Key indicator plants,animals,and ecological processes are described to inform land management <br /> decisions. <br /> This region was historically occupied by large grazing animals such as bison and elk,along with pronghorn and mule deer.Today elk may <br /> occasionally be found in certain locales.Deer and pronghorn are widely distributed throughout the MLRA.This is an important site for <br /> livestock grazing,especially beef cattle. <br /> Drought has historically impacted the vegetation of this region.Changes in species composition will vary depending upon the duration and <br /> severity of the drought cycle,and prior grazing management.Recent drought events have increased mortality of blue grama significantly in <br /> https://esis.sc.egov.usda.gov/ESDReporttfsReportPrt.aspx?id=R069XY006CO&rptLevel=all&approved=yes&repType=regular&scros=&comm= 4/18 <br />