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"',)^:')i3 ~J L- 'J . Impacts from Riparian Zone Management. Restrictions on road construction and water source development and maintenance would limit vegetation loss, sedimentation, and erosion, and directly and indirectly maintain and improve ftshery stream conditions. Impacts from Wildlife Habitat Management. The improvement in upland and riparian areas through proposed management and vegetation treatments would maintain and help improve the condition of fishery streams. Impacts !'rom Uvestock Grazing Management. Implementing livestock grazing management actions, including increasing use supervision, limits on total forage utilization, a cooperative weed-control program, minimum stubble heights, and range readiness would result in an improvement in plant vigor which would lead to healing and building of streambanks while down-cut, or incised stream channels would stahilize. The elimination of livestock grazing, including fall use in some areas, and the elimination of some season-long grazing would result in improved plant vigor, diversity and composition, and an increase in above-ground biomass; streambanks would further stabilize, groundwater recharge would increase, and water tables would rise. The allocation of new or additional forage from vegetation treatments to meet watershed needs first would indirectly improve fishery streams. Impacts from Forest Management. Excluding timber harvests in some areas, requiring riparian values to be maintained during all timber harvests, and implementing measures designed to protect and maintain watershed, soil, and vegetative resources during timber harvests would prevent riparian zone deterioration and indirectly and directly maintain fishery stream conditions. Impacts !'rom Recreation Management. The construction of recreation facilities and subsequent use in, or adjacent to, fIShery streams would cause the deterioration of habitat quality through vegetation removal and sedimentation. The areas PREFERRED ALTERNATIVE(E) IMPACTS affected by such development would be less than 50 acres. Closing about 1,276 acres of riparian zones to DHV use and limiting DHV yearlong use on 3,m acres to designated routes would prevent rutting and destruction of vegetation and streambanks, and indirectly maintain fIShery conditions in these areas. Impacts from Transportation and Access. The acquisition of proposed easements would facilitate access for fishery stream management in 12 areas. Impacts from Acquisition of Non-Federal Lands. Acquisition of non-federal lands containing riparian zones would indirectly enhance fishery stream management on public lands and would prevent development of these areas. Impacts !'rom Rights-of.Way Management. Excluding rights-of-way from about 963 acres of riparian areas along fishery streams would protect these areas from rutting, compaction, streambank deterioration and channelization. Rights-of-way construction seasonal stipulations and required rehabilitation would help reduce vegetation and soil damage and removal. Designating 85,387 acres as avoidance areas would also help reduce disturbance from rights-of-way constructions. Implementing required mitigation from surface-disturbing rights- of-way in the remainder of the planning area would also m;n;mi7.e fIShery stream disturbances. Impacts !'rom Withdrawals. Protective withdrawals would prevent loss or deterioration of fishery streams. Impacts from Water Power and Storage Reservoir Sites. Construction of reservoirs on inventoried and potential sites would result in the loss of affected ftshery streams and habitat. CUMULATIVE IMPACTS ON FISHERY RESOURCES (AQUATIC HABITAT) Current and proposed withdrawals, vegetation treatments and management strategies to reduce soil erosion, intensive riparian management, total forage, utilization limits, fall livestock use limits, and 4-65