The Bootjack Cooperative Wildlife Management Unit (CWMU) is located on the Promontory Mountains. The westside of the Unit is almost the shoreline of the Great Salt Lake at around 4200 feet. From the westside to the eastside of the Unit, the elevation rises to a maximum of about 7200 feet in the north and 6200 feet in the south. From these higher elevations the Unit drops faster to the eastside boundary at around 4200 feet, almost the Great Salt Lake shoreline. In an east-west direction, South Canyon, North Canyon, Miller Canyon, and Broadmouth Canyon all cut the unit. The most common elevation is 4200 feet but ranges from 4200 feet to 7200 feet with an elevation difference of 3000 feet. Fifty-one percent (51%) of the CWMU elevation ranges between 5000 feet and 6400 feet an elevation difference of 1400 feet.The middle of the Bootjack Cooperative Wildlife Management Unit (CWMU) is covered with Inter-Mountain Basins Big Sagebrush Shrubland (48). Surrounding the Sagebrush Shrublands are extensive areas of Great Basin Pinyon-Juniper Woodland (37). Along the western edge of the Unit are areas of Invasive Annual Grassland (121) and Invasive Annual and Biennial Forbland (122). There are areas of Inter-Mountain Basins Semi-Desert Grassland (76) and at drier locations, Great Basin Xeric Mixed Sagebrush Shrubland (48) and Inter-Mountain Basins Greasewood Flat (82).One of the Bootjack Cooperative Wildlife Mangement Unit (CWMU) nearest weather stations, BEAR RIVER REFUGE(420506), is about 17.2 km northeast from the northeast edge of the CWMU. BEAR RIVER REFUGE has forty-seven (47) years of records, 1937 - 1984. During the FALL (September, October and November) the average precipitation is 3.50 inches, but it can be as high as 11.58 inches or as low as 1.09 inches. During the 91-day FALL period, 17 days will experience greater than or equal to 0.01 inch of precipitation, 9 days of greater than or equal to 0.10 inch, or 2 days of greater than or equal to 0.50 inch of precipitation. Snowfall during the FALL averages 1.7 inches but can be as high as 9.0 inches. FALL temperature at BEAR RIVER REFUGE averages 51.7 degrees F. but can be as high as 97.0 degrees F. or as low as -3.0 degrees F. During the FALL, 25 days will be below freezing (32 degrees F.) and 3 days above 90 degrees F.