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Fishery Resources The North Platte River in Wyoming is primarily a cold-water stream, providing many areas of good to excellent fishing for rainbow and brown trout. A number of the mainstem reservoirs are also noted for good fishing, including both cold-water species, such as trout, and warm- water species, such as walleye and yellow perch. The North Pl atte in Nebraska is class ifi ed as a Cl as s 1 stream from Lake McConaughy upstreifll to the State line. This reach of the river serves as a corridor for rai nbow trout mi grat i on from Lake McConaughy to important spawning tributaries in the Bridgeport to Henry reach of the river. These migrating rainbows average in the 3 to 4 pound class. Most of the reach below Lake McConaughy is classified as a Class 2 stream. Warm-water gamefi sh, such as ch an nel c atfi sh, 1 argemouth and smallmouth bass, sunfish, crappie, northern pike, and walleye, can be found throughout the North Platte in Nebraska. Lake Minatare is considered a walleye fishery of local and regional significance. Lake McConaughy is a fishery of statewide importance in Nebraska (NGPC, 1972). It provides both cold and warm-water habitat and excellent sport fishing for a variety of species, including McConaughy rainbow trout, white bass, striped bass, walleye, yellow perch, crappie, sma llmouth bas s, and ch an ne 1 cat fi sh. Threatened and Endangered Species.--No federally listed threatened or endangered fish species occur in the area of the North Platte River under study. The State of Nebraska recognizes several species as threatened; the Stat.e of Wyoming 1 ists six species as rare. These species are shown in table 4. South Platte River Habitat Types Most of the habitat types along the South Platte River are comparable to those previously described for the North Pl atte. Types which differed significantly from the North PI atte communities are ponderosa pine, Douglas fir, and sand sage. Wildlife Resources Major Game and Recreation Species.--The description of game and recreation species found along the North Pl atte River is appl icable to the wi ldl ife resources associated with the South Pl atte. The Waterton Canyon bighorn sheep herd has subsequently been decimated by disease, and now numbers only about 20 individuals (Schbonveld, 1981). Concentration Areas.--As on the North Platte River, a number -of areas are found along the South Pl atte which serve as concentration areas for certain wildlife species. In the reach from1>reeleydownstream, the South Pl atte River and adjacent offstream reservoirsan<'lwarm-water sloughs serve as a major wintering area for wat.er'f-owl, sl.lpportlngabo'Ut 1'6