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<br />ulild ,L <br /> <br />-.- ~ <br />activities may be implemented by the Recovery Pragram or by Recovery <br />PrOQram participants individually, ResponsibIlities of other aganCles 1..11 be <br />. <br />were identified in the issue paper. and actIons were implemented consistent <br />With tl'1-etr authorities outside the Recovery Program. <br /> <br />b. The Recovery Program has been evaluatIng agricultural diversion structures <br />inlhe Yampa RIver and has discovered thaI although not all of these <br />structures Impede Colorado plkeminnow passage. the annual bulldozing In <br />critical habllat in the river 1h3t~ required to maintain many of these <br />structures may destroy or adversely modify fish habItat Upgrading these <br />Slructures so that they are more secure would eliminate the need lor IhT~ <br />annual bulldOZing and consequent adve~e modification of critical habllat. <br /> <br />c. Fish passage structures are planned for a number of dIVersion dams in the <br />Upper Basin in the currenl RIPRAP However. without screens or <br />"entralnmentp'iecluslon structures," adult fish, especially razorback sucker, <br />may go into the diversion canalS, To keep fish In the more s!l,curi'! riv~r <br />habItat. a modification was made to include an entrainment preclusion <br />structure on the proposed passage structure at the 6ovemment-tltghhne <br />Grand Valley project diversion (Roller Dam) Also, the need for an <br />entrainment preclusion structure at Redlands diverSIOn dam will be <br />evaluated aflerconstruction of tha hsh ladder there, <br /> <br />3 ReductIon of NeQallve Imoacts of NOflnfltive Fishes and Sportflsh ManagllO:!!ml <br />Activities: ModifIcations were made under this recovery element to protect the <br />constituent element of the fIshes biologIcal envlmnmenl <br /> <br />a, Competition with and predation f'mm by ,ntroduced specIes is Widely <br />assumed to have played a role in the decline of the endangered fishes <br />The Recovery Program has ~e~n and continues to assess options to reduce <br />negative Impacls of problematic nonnallve speCies, sportflsh management. <br />and angling mortality, Although we cannol yet fully predict the results at <br />Implementing some of these management options. we need to begin to <br />Implement the most viable ones Therefore, actions have been added to <br />Implement (in cooperallon with the States) VIable measures whIch Will <br />decrease negative impacts of certain nonnative fishes, sportfish <br />management. and angling mortality Specific acllons were added to <br />selecllvely remove northern pike from the Yampa River and nonhern pike <br />and centrarchids Irom the Gunnison River and possibly Paonia Reservoir <br /> <br />A.' <br />