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r dams may not be feasible because of cost and avoidance of cold water releases from such structures. The Redlands diversion on the Gunnison River would provide about 40 miles of habitat with installation of a passage facility to span the 8-foot diversion dam. A few Colorado squawfish inhabit this reach at the present time. Passage facilities over three diversion structures up to 20 feet high on the Colorado River upstream from Palisades, Colorado would provide about 15 miles of habitat for rare fish. A passage facility at the 30-foot plus Taylor Draw Dam on the White River would provide access to over 50 miles of stream that was used by Colorado squawfish prior to closure of the dam. Colorado squawfish congregated below the dam and were easily caught by trout anglers that required an emergency closure to angling to prevent angling mortality. Since this dam was recently completed and squawfish are presently concentrated below the dam, construction of a fish passage facility on this river could provide immediate answers on use by this species. The channel that was needed as a bypass structure during construction of the dam is now a high water spillway where the fish passage facility could be constructed. The other sites have been in place for a long time and natural migrations no longer occur in these areas. Fish would have to be stocked above the diversion dams since imprinting may have to occur for fish to return to the reaches since there is some evidence for homing in the Colorado squawfish. Although downstream drift of larvae occurs, there is also some evidence that juvenile and subadult squawfish tend to naturally move upstream and establish residence on the larger tributaries of the Green River. For example, squawfish apparently migrate from the Green River into the upper Yampa River, remain there until they mature, and then migrate to the lower Yampa to spawn. After spawning, these fish move quickly upstream to a "home" area based on radiotelemetry studies. o Evaluate augmentation of wild stocks through stocking from "grow-out" ponds. Study the limnology of suitable ponds to determine how to increase the productivity of these waters for rearing rare fish to a size suitable for stocking. - Determine the relation of survival to size of the rare fish through stocking of progeny from wild stocks. Examine the phenomena of imprinting and homing of the Colorado squawfish as possible mechanisms for augmenting existing wild stocks. Rationale - Colorado squawfish were raised to 200 mm TL in one year in gravel pit ponds near Grand Junction, Colorado. This fast growth was attributed to warmer water temperatures. However, the low number of fish that were stocked into these 12