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Interestingly, these factors are only found in relatively few and/or small locations in the lake. We suggest that Lake Mead is providing us a look at what naturally recruiting razorback sucker populations may look like in the real world of nonnative predators. Small areas that provide the components for recruitment may be an alternative "recovery solution" rather than large populations that rely on large sections of river or habitat that need to be intensively managed to achieve minimal recruitment. If small populations are an answer and deemed as important, we need to understand how to develop small populations of a species that appears to home into natal spawning areas, in locations with suitable recruitment habitat. 17. Larval Razorback Sucker Drift and Floodplain EntrainmentStudies in the Green River, Utah. Authors: KEVIN CHRISTOPHERSON, Utah Division of Wildlife Resources, RON BRUNSON, U.S. Forest Service, and KEVIN BESTGEN, Colorado State University Abstract: Preliminary results are presented on an effort to identify important nursery habitats for razorback sucker larvae in the Green River, Utah. Neutrally buoyant beads, and marked hatchery produced razorback sucker larvae, were released at two known spawning locations during peak spring flow in 2005. Beads and larvae Were released at three different river flows, and were sampled at five different floodplain sites along 83 kilometers of the river. Beads were collected in all floodplains that had river connection including the Leota site 83 kilometers down stream. 18. Retrospective of the Recovery Program, River Temperature Monitoring Author: GEORGE SMITH, Hydrologist U.S. Fish and Wildlife Service, Denver, Colorado Abstract: Beginning in 1997 the Fish and Wildlife Service began river temperature monitoring to build a database for a basin wide temperature model "SNTEMP". Later when the Recovery Program was established in 1988 temperature monitoring was incorporated into work to support other Recovery Program research activities. The paper will document the location of the temperature data collection network, the evolving nature of the data collection equipment and demonstrate how the data can be accessed and downloaded from the web. The paper will also demonstrate a resent use of the temperature data in managing releases from Flaming Gorge Reservoir in an attempt to maintain temperatures in the Green River no more than 50C colder than the Yampa River at the confluence during the summer base-flow period to prevent cold shock to drifting Colorado pikeminnow larvae. Researchers present at the meeting will be asked to comment on the usefulness of the data, collection locations, and locations which should be added or dropped. 17