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<br />Table 1.-"--:--Summary of species status. <br /> <br />SPECIES <br /> <br />Colorado <br />pikeminnow <br /> <br />Humpback <br />chub <br /> <br />Razorback <br />sucker <br /> <br />BonytaiJ <br /> <br />MIDDLE GREEN <br /> <br /> <br />RIVER SYSTEM <br />LOWER GREEN <br /> <br />About 3,500 adults (based on 2000 data); <br />report on iOO0-2003 estimates due March <br />2004. <br /> <br />Estimates initiated in 2001; report on <br />2001-2003 estimates due March 2004. <br /> <br />UPPER COLORADO <br /> <br />About 700 adults (based on 2000 data); <br />estimates continued in 2003. <br /> <br />SAN WAN: Estimate of about 20wild adults based on data collected in the early to mid-1990's; stocking young-of-year fish is currently <br />underway. <br /> <br />Black Rocks Canyon: About 1,000 adults; <br />estimates continuing in 2003. <br />Westwater Canyon: 2,200-4,700 adults based <br />on 3 sampling sites in 1998-2000; effort <br />expanded in 2003. . <br />Cataract Canyon: About 500 adults; a rnark- <br />recapture will be investigated in 2003 (this <br />effort \vas scheduled to begin in 2002 but was <br />poslponed due to low flows). <br /> <br />LOWER COLORADO, GRAND CANYON: 2,000-4,000 adults (not including the mainstem); methods being reviewed to improve estimate. <br /> <br />Y arnpa Canyon: Population small, about <br />400 adults, based on model using <br />1998-2000 data. Effort expanded in 2003 <br />to develop a more precise estimate. <br /> <br />Desolation/Gray Canyon: Estimates for 2001 <br />and 2002 were 1,500 and 1,700 adults, <br />respectively; estimates continuing with <br />expanded effort in 2003. <br /> <br /><100 wild adults; population being <br />augmented through stocking, which is <br />being expanded with excess fish stocked <br />into selected floodplain depressions; <br />stocked fish are returning to spawning bar; <br />monitoring and evaluation of stocked fish <br />in 2003-2004 being accomplishedthrough <br />sampling conducted for other population <br />estimates and nonnative fish control. . <br /> <br />Few wild adults; population being augmented <br />through stocking; monitoring and evaluation <br />of stocked fish in 2003--,-2004 being <br />accomplished through sampling conducted <br />for other population estimates and nonnative <br />fish control. <br /> <br />Few wild adults; population being augmented <br />through stocking; monitoring and evaluation <br />of stocked fish in 2003-2004 being <br />accomplished through sampling conducted for <br />other population estimates and nonnative fish <br />control. <br /> <br />SAN WAN: No estimate of adults is available; stocking l-year-old~plus fish (greater than 300 rom total length) is currently underway. <br /> <br />Populations are currently being re-introduced in Colorado, lower Green, middle Green and Yampa rivers; augmentation is being expanded <br />with excess fish stocked into selected floodplain depressions; survival of stocked fish observed; monitoring and evaluation of stocked fish in <br />2003-2004 being accomplished through sampling conducted for other population estimates and nonnative fish control. <br /> <br />2 <br /> <br />