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Other proposed actions addressed in the Yampa Plan/EA <br />Nonnative fish management is neither categorically excluded nor addressed in any previous NEPA <br />documents is nonnative fish management (see Yampa Plan beginning on page 79). In recent years, <br />nonnative fishes, particularly smallmouth bass, have proliferated in the Yampa and Green rivers. <br />Northern pike and channel catfish, because of their predatory habits and coexistence with <br />populations of endangered fishes, also have been targeted for control. This element of the plan <br />encompasses a variety of actions, including removing northern pike and smallmouth bass from <br />critical habitat of the Yampa River, as well as reaches immediately upstream from critical habitat <br />(Hayden reach), and translocating these fishes to off-channel ponds and reservoirs where they are <br />accessible to anglers; lethally removing channel catfish from Yampa Canyon; and capturing, <br />marking and returning northern pike alive within reaches of the Yampa River farther upstream from <br />critical habitat (above Hayden to Lake Catamount). The latter action is intended to demonstrate <br />whether fish propagated upstream from critical habitat are dispersing downstream to critical habitat. <br />The results of this study may dictate that removal of nonnative fishes be expanded to reaches farther <br />upstream. <br />A number of alternative nonnative fish management actions were analyzed, including lethal removal <br />of nonnative fishes throughout the critical habitat reach of the Yampa River; creating "exclosures" <br />to deny northern pike access to suitable spawning habitats, particularly in the Hayden reach; lethally <br />removing all fishes from Elkhead Reservoir during the enlargement; providing a bounty to anglers <br />for certain species; and supporting fishing tournaments to encourage greater levels of harvest. <br />Because the Colorado Division of Wildlife (CDOW) is responsible for regulating sportfishing within <br />the state, many of these actions can be undertaken only with the approval and support of the CDOW. <br />In addition, the City of Craig, who owns and operates Elkhead Reservoir, would have to approve <br />lethally removing sportfish from the reservoir, which Craig has declined to do. The CDOW <br />can only support, not sponsor, locally sponsored fishing tournaments. Therefore, tournaments were <br />not considered a viable, long-term solution to the nonnative fish problem. The CDOW considered, <br />but rejected, bounties, because they believe that bounties would send the "wrong message" with <br />respect to how the agency values nonnative sportfish. However, bounties have been used elsewhere <br />(e.g., Spinney Reservoir in the South Platte Basin) to protect trout fisheries, and the Colorado <br />Wildlife Commission already has relaxed or eliminated bag limits for certain problematic nonnative <br />sportfish in the Colorado River Basin, including the Yampa River. <br />Lethal removal of nonnative fishes upstream from Yampa Canyon remains an option of last resort. <br />As long as there are suitable receiving waters for these fish, the CDOW will continue to advocate <br />translocation as its preferred alternative to lethal removal. Exclosures were studied, but are not <br />considered feasible, because of the large number of potential spawning sites along the river and <br />limited access to spawning sites on private land. However, screening ponds and reservoirs is <br />considered feasible to reduce or preclude nonnative fish from escaping from these water bodies to <br />the river; the proposed enlargement of Elkhead Reservoir action includes screening the new outlets, <br />so that the reservoir may continue to receive smallmouth bass removed from the river. <br />Finding of No Significant Impact 4 <br />