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<br /> (} ~) 11 D 1 <br /> Table 1 <br /> Duck Production in San Luis Valley. Colorado <br /> 1964-1978 !J <br /> Average ntDber Est1ll.ated Percent total Percent total <br />Area size Acres of of breeding average elUlua! wetland in production in Ducks pToduc:ed/ <br />Area Y ac't"es Y wetland 11 pairs production San Luis Valley !!J San Luis Valley acre of wetland <br /> (acres) <br />San tuis/Read Lakes 4,470 2,235 315 945 1.0 1.1 0.42 <br /> (180-2,439) <br />Miabak Lakea 2,570 1.285 253 759 0.6 0.9 0.59 <br /> (540-1.596) <br />Russell Lakes 3,829 1,915 1,131 3,393 0.8 4.1 1.77 <br /> (489-1,845) <br />Adams Lakes 640 320 38 114 0.1 0.1 0.35 <br /> (18-309) <br />Honte Vista NWR 14,836 6,900 3,861. 11,583 3.0 13.8 1.68 <br /> (9,000-13,260) <br />Total for high- <br />density breeding <br />areas 26,345 12,655 5.598 16,794 5.5 20.0 1.33 <br /> (11,806-19,575) 11 <br />Low-density breeding <br />area 11 805,655 218,345 24,402 67,206 94.5 80.0 0.31 <br />'" <br />Total {'or <br />San Luis Valley 832,000 231,000 28,000 84,000 100.0 10.0 0.36 <br />Total for Closed <br />Basin project <br />8 rea !./ 130.000 43,122 4,540 13,620 18.6 16.2 0.31 <br /> <br />11 <br />21 <br />11 <br /> <br />Breeding pair and area size data taken from Hopper et ale (1975). Updated by personal communication Howard Funk 1981. <br />Identification and delineation of low- and high-density breeding areas from Hopper et al. (1915). <br />Acreage esttBate for high-density areas was based upon FWs estimate of wetland densities with Hopper et a1. (1915) study areas. <br />Acreage for Konte Vista NWll was taken from tbe refuge annual reports which indicated an average of 6,900 acres annually <br />available for duck production. <br />Annual production estimates sssumed 50-percent nest success and 6 fledglings (class lIe-Ill) per brood. <br />Data supporting these figures came from studies on Monte Vista NWR (Anderson 1967, Pospahala 1969, Schroeder 1972, and Robinson 1911). <br />Range of production does not include 1964 when San Luis/Head,. M1shak,. and Adams Lakes were not surveyed by Hopper et a1. (1915).. <br />In 1965 Adams Lake was not surveyed. <br />Includes San Luis/Head Lakes from high-density breeding areas; data from Mishak Lakes was not included but an unknown portion <br />of Mishak Lakes may be included in wetland acreage for Closed Basin project area. <br /> <br />.9 <br />11 <br />!I <br />