The Lone Tree Taylor Hollow Cooperative Wildlife Management Unit (CWMU) is located on both the east and west sides of East Canyon Reservoir. The high point on the east part of the Unit is about 6700 feet and is on the east boundary. The elevation decreases towards the reservoir. This part is cut in the south by Taylor Hollow, 5700 feet to 6100 feet. Cottonwood Canyon ranging from 5800 feet to 6700 feet and Dip Hollow ranging from 6200 feet to 6300 feet cut the Unit. On the west part of the Unit, east of the reservoir, there is a ridge that ranges from Deadox, 8400 feet to 7700 feet in the north. Lowest elevations are 6600 feet to 7400 feet. Much of Monument Creek froms the southern boundary of the unit. Dry Pine Creek ranging from 6200 feet to 7200 feet is one of the major drainages cutting this part of the Unit. The most common elevation is 6300 feet but ranges from 5800 feet to 8300 feet with an elevation difference of 2500 feet. Forty-nine percent (49%) of the CWMU elevation ranges between 6500 feet and 7600 feet an elevation difference of 1100 feet. Most of the Lone Tree Taylor Hollow Cooperative Wildlife Management Unit (CWMU) is covered with Inter-Mountain Basins Montane Sagebrush Steppe (62), which is mostly in the middle of the unit. More dominant in the north and south ends in almost equal proportions are Rocky Mountain Gambel Oak-Mixed Montane Shrubland (41) and Rocky Mountain Aspen Forest and Woodland (22). In a much more minor way patches of Rocky Mountain Montane Mesic Mixed Conifer Forest and Woodland (32), Inter-Mountain Basins Big Sagebrush Shrubland (48) and Inter-Mountain Basins Big Sagebrush Steppe (66) are distributed throughout the unit.One of the Lone Tree - Taylor Hollow Cooperative Wildlife Mangement Unit (CWMU) nearest weather stations, ECHO DAM (422385), is about 9.0 km east from the east edge of the CWMU. ECHO DAM has sixty-seven (67) years of records, 1940 - 2007. During the FALL (September, October and November) the average precipitation is 3.88 inches, but it can be as high as 10.59 inches or as low as 0.47 inch. During the 91-day FALL period, 21 days will experience greater than or equal to 0.01 inch of precipitation, 11 days of greater than or equal to 0.10 inch, or 2 days of the greater than or equal to 0.50 inch of precipitation. Snowfall during the FALL averages 12.1 inches but can be as high as 41.5 inches. FALL temperature at ECHO DAM averages 46.5 degrees F. but can be as high as 97.0 degrees F. or as low as -21.0 degrees F. During the FALL, 54 days will be below freezing (32 degrees F.) and 3 days above 90 degrees F.