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Natural <br /> rces <br /> USDA Conservation <br /> Service <br /> EXHIBIT J (VEGETATION INFORMATION) <br /> Conservation Service <br /> Ecological site R067BY024CO <br /> Sandy Plains <br /> Accessed:05/09/2023 <br /> General information <br /> Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It <br /> contains a working state and transition model and enough information to identify the ecological site. <br /> Wyoming <br /> Nebraska <br /> Colo <br /> ' Kansas <br /> New Mexico Okk ihoma <br /> Figure I.Mapped extent <br /> Areas shown in blue indicate the maximum mapped extent of this ecological site. Other ecological sites likely occur <br /> within the highlighted areas. It is also possible for this ecological site to occur outside of highlighted areas if detailed <br /> soil survey has not been completed or recently updated. <br /> MLRA notes <br /> Major Land Resource Area (MLRA): 067B—Central High Plains, Southern Part <br /> MLRA 6713-Central High Plains, Southern Part is located in eastern Colorado. It is comprised of rolling plains and <br /> river valleys. Some canyonlands occur in the southeast portion. The major rivers are the South Platte and Arkansas <br /> which flow from the Rocky Mountains to Nebraska and Kansas. Other rivers in the MLRA include the Cache la <br /> Poudre and Republican. The rivers have many tributaries. This ecological site is traversed by 1-25, 1-70 and 1-76, <br /> and U.S. Highways 50 and 287. Major land uses include 54% rangeland, 35% cropland, and 2% pasture and <br /> hayland. Urban and developed open space, and miscellaneous land occupy approximately 9%of the remainder. <br /> Cities in this area include Fort Collins, Greeley, Sterling, and Denver. Other cities include Limon, Cheyenne Wells, <br /> and Springfield. Land ownership is mostly private. Federal lands include Pawnee and Comanche National <br /> Grasslands (U.S. Forest Service), Sand Creek Massacre National Historic Site(National Park Service), and Rocky <br /> Mountain Arsenal National Wildlife Refuge (U.S. Fish &Wildlife Service). State Parks include Cherry Creek and <br /> Chatfield Reservoirs, and Barr and Jackson Lakes. <br /> This region is periodically affected by severe drought, including the historic"Dust Bowl'of the 1930s. Dust storms <br /> may form during drought years, in windy periods. Elevations range from <br /> 3,400 to 6,000 feet. The Average annual precipitation ranges from 14-17 inches per year, and ranges from 13 <br /> inches to over 18 inches, depending on location. Precipitation occurs mostly during the growing season, often <br /> during rapidly developing thunderstorms. Mean annual air temperature (MAAT) is 48-52°F. Summer temperatures <br /> may exceed 100°F. Winter temperatures may be sub-zero, and snowfall varies from 20-40 inches per year. Snow <br />