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CHAPTER 3: EXISTING CONDITIONS IN THE STUDY AREA Table 3-7 ESA Listed Species Potential Presence and Designated Critical Habitat Adjacent to Each Alternative Potential Presence Common Name Listing Status Alternatives Alternative Alternative Alternative 1-3 4a 4b 5 Canada lynx Threatened Yes Yes Yes No .................................................................................................................................................................... Gray wolf Endangered Yes Yes Yes Yes .................................................................................................................................................................... North American Proposed Yes Yes Yes Yes wolverine Threatened .................................................................................................................................................................... Marbled murrelet Threatened Yes Yes Yes Yes .................................................................................................................................................................... Northern spotted owl Threatened Yes Yes Yes Yes .................................................................................................................................................................... Northern spotted owl — Threatened No Yes Yes No Critical Habitat .................................................................................................................................................................... Yellow-billed cuckoo Threatened Yes Yes Yes Yes .................................................................................................................................................................... Bull trout— Columbia Threatened Yes Yes Yes Yes River DPS .................................................................................................................................................................... Bull trout— DPS Critical Threatened Yes Yes Yes Yes Habitat .................................................................................................................................................................... Steelhead — MCR DPS Threatened Yes Yes Yes Yes ........................................................................................................._........................................................................................................................................ Steelhead — MCR DPS Threatened Yes Yes Yes Yes Critical Habitat Species and critical habitat are from the U.S.Fish and Wildlife Service and National Marine Fisheries Service species lists based on a 500-foot buffer along each alignment. Riparian Area, Domerie Flats Elk Winter 3.4.3 Ecosystem Resiliency Concentration Area, Bullfrog Mill Winter Elk ri The ecosystem resiliency criteria assesses Concentration Area, Bullfrog Mitt/Cie Elur whether the alternative has the potential Wood Duck Nesting Area, and the Cie Elum to increase resiliency against the impacts River Riparian Area as well as several other of climate change, such as reducing risks wildlife migration corridors and winter use associated with extreme flood events. areas. Alternatives 4A and 4B both bisect the Domerie Flats Elk Winter Concentration Area. Channel Migration Zones (CMZ) are areas within Alternative 5 borders the south side of the the floodplain where a stream or river can Domerie Flats Elk Winter Concentration Area. be expected to move naturally over time due to hydrology and topography.Alternatives 1 through 3 are mostly in Tier 1 CMZ with one area of Tier 2 CMZ near milepost 75.Alternative VOLUME I: FEASIBILITY REPORT 1-90 Corridor—Easton to Cle Elum Feasibility Study 1 44