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<br />The U.S. Fish and Wildlife Service (USFWS) has provided a list of federally <br /> <br />listed endangered species which may occur within the study area. This list, <br /> <br />which is preliminary and subject to revision as project specifics become <br /> <br />available, includes the following species: <br /> <br />Black-footed ferret <br />Peregrine falcon <br />Bald eagle <br />Whooping crane <br /> <br />Mustela nigripes <br />Falco peregrinus <br />Haliaeetus leucocephalus <br />Grus americana <br /> <br />The USFWS has also included a list of species which could potentially be present <br /> <br />in the project area and which are candidates for official Federal listing as <br /> <br /> <br />threatened or endangered species. Although these species do not have legal <br /> <br />status under the Endangered Species Act, this listing is provided to comply with <br /> <br />the spirit of the Act, especially since it is possible that one or more of these <br /> <br />species could achieve official listing status prior to the completion of this <br /> <br /> <br />proposed project. These species include: <br /> <br />Ambrosia <br />Ferruginous hawk <br />Long-billed curlew <br />Mountain plover <br />Southern spotted owl <br />Swainson's hawk <br />Swift fox <br />Western snowy plover <br />White-faced ibis <br /> <br />Ambrosia linearis <br /> <br /> <br />Buteo regalis <br /> <br />Numenious americanus <br /> <br />Charadrius montanus <br /> <br />Strix occidentalis lucida <br /> <br /> <br />Buteo swainsoni <br /> <br /> <br />Vulpes velox <br /> <br /> <br />Charadrius alexandrinus nivosus <br /> <br /> <br />Plegadis chihi <br /> <br />The Castlewood Canyon area also contains wetland and riparian habitats which <br /> <br /> <br />are valuable to wildlife resources; habitat types which are limited in areal <br /> <br />extent within the State of Colorado. Construction of a dam at Castlewood could <br /> <br />also adversely impact Cherry Creek by altering natural instream flow volumes and <br /> <br />velocities, as well as the existing fluvial aquatic habitats, for a significant <br /> <br /> <br />distance downstream from the dam. This reach of Cherry Creek may also experience <br /> <br /> <br />streambed degradation downstream from the dam, resulting in possible adverse <br /> <br />60 <br />