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Site Type: Rangeland <br />MLRA: 69 -Upper Arkansas Valley Rolling Plains <br />Gravel Breaks <br />R069XY064C0 <br />Growth of native cool season plants begins about April 15 and continues to about June 1. Native <br />warm season plants begin growth about May 1 and continue to about August 15. Regrowth of cool <br />season plants occurs in September and October of most years, depending on moisture. <br />Minimum Maximum <br />Frost-free period (days): 147 162 <br />Freeze-free period (days): ~ 169 186 <br />Mean Annual Precipitation (inches): 10 14 <br />Average Monthly Precipitation (inches) and Temperature (°F): <br /> Preci .Min. Preci .Max Tem ..Min. Tem .Max. <br />Janua 0.28 0.27 12.1 46.4 <br />Februa 0.14 0.36 15:3 52.9 <br />March 0.25 0.68 20.7 61.5 <br />A ril 0.73 1:16 28.9 71.8 <br />Ma 0.90 2.21 38.6 81.1 <br />June 0.83 1.79 47.6 91.4 <br />Jul 2.34 2.38 53.4 96.2 <br />Au ust 1.62 2.00 51.7 93.7 <br />Se tember 1.04 1.12 43.3 86.0 <br />October 0.90 0.78 32.2 74.2 <br />November 0.49 0.51 21.0 58.1 <br />December 0.43 0.27 14.1 48.6 <br />Climate Stations Period <br />Station ID Location or Name From To <br />C06763 Pueblo Arm De of 1971 2000 <br />C03828 Haswell 1922 2001 <br />C07287 Rush 1924 2001 <br />C04834 Las Animas 1930 2001 <br />For detailed information visit the Western Regional Climate Center at http://www.wrcc.dri.edu/ <br />website. <br />Influencing Water Features <br />Wetland Description: System Subsystem Class Sub-class <br />None None None None None <br />Stream Type: None <br />Representative Soil Features <br />The soils of this site are very deep and are somewhat excessively drained to excessively drained. <br />These soils have rapid to moderately rapid permeability. They formed in gravelly alluvium and occur <br />on fan remnants, terraces, hills, and ridges often bordering major drainage systems. The available <br />water capacity is typically low, but ranges to moderate in less sandy soils. The surface layer ranges <br />from 2 to 10 inches thick and is typically loam, sandy loam, or loamy sand and has modifiers ranging <br />from gravelly to very gravelly. The pH generally ranges from slightly acid to moderately alkaline. The <br />soil moisture regime is ustic aridic but ranges to aridic in the driest areas of MLRA 69. The soil <br />temperature regime is mesic. <br />Technical Guide <br />Section IIE <br />USDA NRCS ,_ <br />Rev. 3/04 <br />~~ <br />