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~ MOUNTAIN SHRUB - This community occupies a narrow altitudinal belt in the watershed generally between 5800-8800 feet and occurs mostly on south and southeast facing slopes. The community makes up 3 % of the watershed or approximately 5,526 acres. Annual precipitation ranges from 9-20 inches depending on the aspect and elevation of the community. The mountain shrub community has an aspect dominated by shrubs and is generally found on steeper slopes at higher elevations or on the middle to upper transition zones between the pinyon-juniper, douglas fIr communities. Some associations of this community may also be found at the highest end of the watershed at 8000 plus feet of elevation. The primary shrub species making up this community are; gambel oak (Quercus gambelii), utah snow berry (Symphoricarpos utahensis), birchleafmountain mahogany (Cercocarpus mountanus), antelope bitterbrush (Purshia tridentata), mexican cliffrose (Cowania mexican), and utah serviceberry (Amelanchier utahensis). The most dominant species may vary depending on the elevation, aspect and rainfall amounts and have an understory of varying mixtures of shrubs and herbaceous plants. Some of the more important perennial grasses are; western wheat grass (Agropyron smithii), blue grass (Poa spp.) blue bunch wheatgrass (Agropyron spicatum) and salina wildrye (Elymus salinas), o o ~ Ecological sites found in this community are: Mountain loam (Oak) Talus slope Upland shallow loam Upland very steep loam Production on ecological sites in this community range from a high of approximately 700 Ibs/acre in favorable years to as low as 100 lbs/acre during poor years, with an average production of about 350 pounds per acre during nonnal years. Potential vegetative manipulation projects or erosion control on most ecological sites within this community would not be successful due to the steep slopes and difficult access to the sites. Some of the sites with less than 20% slopes may have some potential for prescribed burning followed by aerial reseeding. DOUGLAS FIR - TIris community appears in the upper reaches of the watershed as a dense coniferus forest type. It occurs mostly on steep slopes (50-80 %) on north and east or northeast or southeast facing canyon side slopes between 6000-9000 feet. The community makes up 12 % of the watershed or approximately 17,663 acres. Annual precipitation ranges from 12-24 inches depending on the aspect and elevation of the community. The aspect dominant of most associations of the community is the douglas fIr (pseudotsuga menziesii). At the lower elevations towards the canyon floors the douglas fIr type may intenningle with the pinyon- juniper and/or mountain shrub communities in a transition zone. At these lower elevations the transition zone may exhibit an open stand of gambel oak, douglas fIr and pinyon pine. At the upper end of the watershed (above 8000 feet) the 22