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CHAPTER ONE Fishery Resources (Aqualic HabilaJ) Fishery streams and associated riparian areas would be managed to improve their overall condition in order to enhance fisheries. Streams and squatic habitat would be inventoried and monitored to determine site-specific management strategies that would be implemented .. setivity plans are carried out. The BLM and Forest Service Recreational Fisheries Policy, 1990, would be implemented. Measures designed to prevent fishery stream or riparian zone deterioration would be required in all plans for surface-disturbing setivities, Instream water flow appropriations would be pursued on 113 miles of fishery streams in order to ensure a sufficient amount of water for fisheries mainteosoce and protection, About 57 miles of streams in Management Unit 15 would be intensively mansged to improve fishery conditions, Livestock grazing would be temporarily eliminated along North Willow Creek in grazing Allotment 6202 (in the West Antelope Creek ACEC, Management Unit 7), and within 114 mile of Los Pinos Creek in unit 13 in order to sIlow riparian conditions to recover. Fishery improvement projects would be permitted in the Powdernom Primitive Area SRMA, Management Unit 2, if compatible with the objectives of the unit. Livestock GraziDll Management. About 470,460 seres of public land suitable for grazing would be available for grazing in existing aIlotments, with about 46,904 Animal Unit Montha (AUMs) being available for allocation. Public lands unsuitable or unavailable for livestock grazing would continue to be excluded from livestock grazing unless monitoring or other sources of data indicate that the areas may be used for grazing, Public lands suitable for grazing is defined in this document .. those lands that contain those physical features that are conducive to domestic livestock grazing, regardless of whether grazing is currently permitted, Lands unsuitable for domestic livestock grazing do not po....s these features, About 64.192 seres have been identified in the Planning Area that are not suitable for grazing. Livestock use would be restricted, either seasonally or otherwise, On approximately 201,644 seres of public land, Allotment categorization would be re-exsmioed .. needed based upon a change in categorization factors identified from monitoring data or other management and resource infonnstion, Allotment categorization and mansgement levels in the 1987 Rangeland Program Summary update would continue for all 'M' and 'C" allotments, unless monitoring data or other management or resource infonnstion indicate adjustments are necessary, On category "I" allotments, existing management and/or forage allocation levels would be adjusted if necessary to sehieve or maintain a desired plant community and to meet the following resource needs: 1) a forage utilization level in uplands would be maintained dUring the grazing period of use that would allow for plant health or mainteosoce, watershed cover needs, and that would provide quality forage and wildlife cover, Within allotments not covered by setivity plans or grazing agreements that prescribe grazing strategies designed to meet these needs, the maximum use level in uplands during the grazing period of use would be 40-60 % of the current year's production by weight on key forage species, 2) forage utilization levels in riparian zones, except those in units 14 and 15. would not exceed 40 % to 60 % of key berl>aceous forage species, with a 2-112 inch minimum stubble height that would be maintained throughout the grazing period of use. 3) a minimum stubble height of 4' within all riparian zones in Management Unit 14 would be maintained from June 15 through July 31. and a minimum stubble of 2 112' would be required at all other times. 4) a minimum stubble height of 4" in all riparian zones in Management Unit 15, and some in unit 2, would be maintained during the grazing period of use. Livestock grazing in some Management Units would be further modified to resolve resource conflicts, and 1-4