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DOWNLlSTING RAZORBACK SUCKER (Upper Basin and Lower Basin Recovery Units) DELlSTING DEMOGRAPHIC CRITERIA ("self-sustaining with recruitment) Over a 5-year monitoring period: Maintain reestablished populations in Green River subbasin and EITHER in upper Colorado River subbasin or in San Juan River subbasin, each> 5,800 adults" Maintain established genetic refuge of adults in Lake Mohave Maintain two reestablished populations in lower basin, ellch > 5,800 adults" RECOVERY FACTOR CRITEJUA Upper Basin Recovery Unit L Beneficial flow regimes identified, implemented, evaluated, and revised 2. Passage over Redlands and Grand Valley diversions continued 3. Modification ofPrice-Stubb and Government Highline dams to allow passage initiated 4. BalTiers on San Juan' River identified, evaluated, and modifications to allow passage initiated 5. Investigations initiated on modifying Aspinall Unit releases to.increllse wa ter temperatures 6. Measures identified to minimize entrainment of subadults and IIdults at diversion structures 7. Appropriate bottomland sites identified and opportunities for land acquisition assessed . 8. Overutilization reevaluated and, if necessary, actions identified to ensure adequate protection 9. Effects of diseases and parasites reevaluated and, if necessary, actions identified to ensure adequate protection 10. Nonnative fish stocking procedures developed, irnplemented, evaluated, and revised . I J. Control programs for small-bodied nonnlltive fishes in backwllter IInd flooded off-channel nursery habitats developed IInd implemented to identify necessary control levels 12. Chllnnel catfish control progrllms developed IInd implemented to identify necessary control levels .. 13. Northern pike control programs developed IInd implemented to identify necessllry control levels 14. Mechllnisms determined for legal protection of habitat IS. Elements of conservation plans identified 16. Levels of hybridizlltion with white sucker reevaluated, effects assessed, and, if necessary, white sucker control programs developed IInd implemented to identify necessary controllevl:1s 17. Hazardous-materials spills emergency-response plans reviewed and modified liS necessary 1.8. Locations of petroleum pipelines in 100-year floodplain of criticlll hllbitat identified and need for emergency shut-off valves assessed 19. Actions identified for remediation of groundwater contaminlltion at Atlas Mills tailings pile 20. Effects of selenium reevllluated and, ifnecessllry, IIctions identified to reduce deleterious levels Lower Basin Recover)'.Unit J. Beneficial flow regimes identified, implemented, eVllluated, IInd revised 2. Measures identified to minimize entrllinment of sublldults IInd adults at diversion and/or out-take structures 3. Appropriate riverside sites identified and opportunities for land acquisition assessed 4. Overutilization reevalullted and, if necessary, actions identified to ensure adequate protection 5. Effects of diseases and parasitesreevaluated and, if necessary, actions identified to ensure adequate protection 6. Nonnative fish stocking procedures developed, implemented,evaluated, and revised 7. Control programs for nonnative fishes in the mainstem, floodplain, and tributaries developed and implemented to identify necessary control levels 8. Mechanisms determined for legal protection of habitat 9. Elemerttsof conservation plans identified DEMOGRAPHIC CRITERIA ("self-sustaining with recruitment) For 3 years beyond downlisting: Maintain populations in Green River subbasin and EITHER in upper Colorado .River subbasin or in San Juan River subbasin, each> 5,800 adults" Maintain genetic refuge of adults in Lake Mohave Maintain two populations in lower basin, each > 5,800 adults" RECOVERY FACTOR CRITERIA Upper Basin Recovery Unit I. Necessary flow regimes provided 2. Passage over Redlands and Orand Valley diversions continued 3. Modification ofPrice-Stubb and Government Highline dams to allow passage completed 4. Barriers on San Juan River modified to allow passage 5. Aspinall Unit releases modified, if determined feasible IIndnecessary 6. Devices instlllled lind/or mellsures hnplemented at diversion structures to minimize entrainment of subadults and adults 7. Bottomland sites acquired . 8. Adequate protection from overutilization IIttained 9. Adequate protection from diseases and parasites attained 10. Nonnative fish stocking procedures finalized and implemented I L Identified levels of nonnative fish control in backwaters and flooded off- channel nursery habitats IIttained 12. Identified levels of channel catfish control attained. 13. Identified levels of northern pike control attained 14. Necessary habitat legally protected in perpetuity IS. Conservation plans developed and implemented, and necessary agreements executed 16. Identified levels of white sucker control attained 17. Emergency-response plans for hazardous-materials spills implemented 18. Emergency shut-off values installed on problematic petroleum. pipelines 19. Groundwater coritamination remediated at Atlas Mills tailings pile 20. Deleterious levels of seleniurn contamination reduced Lower Basin Recovery Unit I. Necessary flow regimes provided 2. Devices installed and/or measures implernented at diversion and/or out- take structures to minimize entrainment of subadults and adults 3. Riverside sites acquired 4. Adequate protection from overutilization attained 5. Adequate protection from diseases and parasites attained 6. Nonnative fish stocking procedures finalized and implemented 7. Identified levels of nonnative fish control in the mainstem, floodplain, and tributaries attained . 8. Necessary habitat legally protected in perpetuity 9. Conservation plans developed and implemented, and necessary agreernents executed