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<br />. <br /> <br />. <br /> <br />. <br /> <br />Preface <br /> <br />The initial set of criteria and list of sensitive areas was provided to <br />the -upper Colorado River Biological Sub-committee (l~) by Fish and <br />Wildlife biologists. It was subsequently amended by the UCRBS, and other <br />data ~e applied to make the present list !lOre catprehensive. The =rent <br />list is considered a product of the Sub-committee. OUr goal was to ac=ately <br />and fairly represent the state of =rent knowledge and understanding of <br />habitat use by Colorado squawfish, humpback chub and razorback sucker. The <br />focal point of our assesament was the Colorado squawfish. The bonytail was <br />not extensively treated, for lack of data. <br />Based upon the assesament of Fish and Wildlife Service, Colorado <br />Division of Wildlife, and Utah Division of Wildlife Resources data, the <br />sensitive areas represent geographic habitat usage by rare and endangered <br />Colorado River fishes. "Confirm=d-use" rreans that rea=ing and observable <br />activities have beerl documented for a particular life state. On the other <br />hand. "sus:-..,ected-use" only infers that adequate replication or in-depth <br />clocuIrentation has not oc=red to date. Many "suspected-use" areas could be <br />,~'confi.l:m:d" ,after additional research. For Endangered Species Act, cc:::a;>liance, <br />under Section 7. suspected-and confixned-use areas could be considered <br />synonyrrous. <br />It is hoped t.l'lat the following sensitive areas will be adopted by <br />management agencies, that the list w'...ll remain open to am:ndrnent, and that <br />it ,Hill fODll the basis for various basin-wide managerrent decisions and plans. <br />The identification and listing of additional sensitive areas should J:e <br />accCllplished whenever enough data is amassed to support their inclusion. The <br />UC?.BS recc::mTl2nds aedi tional research to verify suspected areas as soon as <br />possible. <br /> <br />Uppe= Colorado River Biological Sub-ccmnittee <br />November 1984 <br />