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Opportunities to expand into potentially restorable habitats appear greatest for the Colorado River cutthroat on the west slope with an almost threefold potential increase in stream miles and an increase in lake surface acres by a factor of 2.5. Opportunities to expand habitat for the greenback cutthroat trout, would occur on the east slope, but the full extent of potential restorable habitat is unknown at this time. The potential greenback expansion described in Table 2 represents potential habitats needing restoration to meet recovery goals before delisting. Expanded use of greenback cutthroat trout in suitable habitats on the east slope is likely more limited due to a smaller resource base on the Front Range. Expansion into new habitats is also presently constrained by its federal "threatened" status, which creates added concern from landowners and water resource users over the Endangered Species Act (ESA) restrictions on "take," and Section 7 consultations. Opportunities to expand the habitat for Rio Grande cutthroat are limited by its relatively smaller range within the state and the fact that many recovery efforts have already been completed, leaving fewer options. Much of the current and potential stream and lake habitat for native cutthroats exists in the headwaters of each river drainage, where protection from negative interactions with introduced salmonids via instream barriers is most feasible. Even with the assumption that this expanded resource base for the native cutthroat trout would be realized, their combined habitat would represent only 10% of the Coldwater stream miles available and 1% of the coldwater lake surface area available. Our ability to expand the aquatic resources for native cutthroat beyond these boundaries is limited by an inability to adequately isolate their populations from other salmonid species. The most likely avenue for native cutthroat trout in conservation management will be to establish these species as the primary trout species in headwater drainages. Restoration of native cutthroat to more productive, lower elevation waters will be conducted where appropriate and biologically feasible. The predominant use of native cutthroat trout in fisheries management will likely focus on catch-and-release and limited harvest fisheries in more pristine and hard-to-access high mountain stream and lake systems. Wild Trout and Gold Medal waters occur in 9 of the 15 major watersheds in Colorado, occupying 254 stream miles and 4,360 lake surface acres (Table 3). Opportunities to expand Gold Medal waters are largely nonexistent since the designation is based on habitat productivity and trout size criteria. Most, if not all, of the suitable habitat is already included in this program. Many existing officially-designated Wild Trout waters are already protected by special regulations. Many streams in Colorado, besides those listed in Table 3, support wild populations of brown, brook, and rainbow/cutthroat hybrid trout that are not officially designated as Wild Trout waters. Some of these waters are currently managed using catchable or subcatchable trout stocking to supplement the fishery provided by the wild populations. It is possible that some of these waters could be managed as wild trout waters with little or no supplemental trout stocking, and protected with a reduced bag limit/size limit/terminal tackle restrictions. The magnitude of 11