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."'; r. ,~ ,', /' '.., t \j .',,.v ~. The Colorado Division of Wildlife's species of concern list was reviewed to determine if any of these species may potentially be impacted by the preferred alternative. No species of concern were identified that may potentially be impacted by the pref$rred alternative. Table 3.3 Threatened, Endangered, and Candidate Species with Potential to be Found in the Proiect Action Area. Common Name Scientific Name Status Black-footed ferret Musti!la nigripes , Endangered Canada lynx Lynx,Canadensis Threatened , Black-tailed prairie dog Cynomys ludovicianus Candidate Greenback cutthroat trout Oncorhynchus clarki stomias Threatened Arkansas darter, Etheostoma cragini Candidate , Bald eagle Haliaeetus leucocephalus " Threatened Whooping crane Grus Americana Eildan!!ered Mexican spotted owl Strix occidentalis lucida Threatened Mountain plover Charadrius montanus Threatened Gunnison sage grouse Centrocercus minimus Candidate Boreal toad ' Bufo boreas boreas Candidate' Slender moonwort , Botryr;:hium lineare Candidate Potential Impacts The list of species prepared by the Service for this project includes species distributed throughout the action area. As indicated previously in the Hydrology section of this chapter, no net change in the " flows of the Arkansas River or the storage/water level of Pueblo Reservoir is expected under either of these alternatives, Consequently, there is no potential to have an impact on those species strictly associated with the reach of the Arkansas Rjver under,analysis orPueblo Reservoir. Therefore, the no action and the Construction Alternative are anticipated to have no effect on the following species or critical habitat: boreal toad, slender moonwort, Canada lynx, greenback cutthroat trout, Arkansas darter, bald eagle, whooping crane or the Mexican spotted owl. The area where ground disturbing activities will occur is the only portion of the area where there is potential to impact any of the identified species. The only species from the list with potential for habitat in the area are the black-footed ferret, the blacj<.-tailed prairie dog and the mountain plover. A description of their habitat follows: Black-Footed Ferret IDstorically, black-footed ferrets had similar habitats and ranges to prairie dogs throughout Colorado. They were found in habitats ranging from shortgrass and midgrass prairie to semidesert shrublands (Fitzgerald et al. 1994). Black-footed ferrets depend on prairie dog colonies as a source of food and shelter and often use the burrows as nesting dens (Fitzgerald 16