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<br />encountering YOY Colorado pikeminnow. Only II YOY Colorado pikeminno\V were <br />collected during 2001 sampling activities. This was the lowest catch of young- of-year <br />pikeminnow ever recorded for ISMP in the middle Green River until 2002. <br /> <br />The collection of native species in general was extremely low. Native YOY species collected <br />include f1annelmouth sucker (n = 9), bluehead sucker (n = 2), and Gila spp. (n = 3). <br /> <br />Lower Green River! Colorado River <br /> <br />Fall YOY seining produced a total of 47 Colorado pikeminno\V between the Colorado and <br />lower Green river reaches. They ranged in size from 22-90 mm and were captured in 21 of <br />56 backwaters sampled. Pikeminnow were distributed primarily in the upper 60 miles of <br />each reach. This years catch rate represents a slight increase over 2001, however, it is the <br />second lowest since 1993. <br /> <br />IV. Study Schedule: <br /> <br />a. Initial year: 1986 <br />b. Final year: ongoing <br /> <br />V. Relationship to RIPRAP <br /> <br />General Recovery Program Support Action Plan <br />V .A.I. Conduct monitoring for YOY Colorado pikeminnow. <br /> <br />VI. Accomplishments ofFY 2002 Tasks and Deliverables, Discussion ofInitial Finding and <br />Shortcomings: <br /> <br />Collection and database entry ofYOY sampling as described in the ISMP handbook. <br /> <br />Task I Baseline ISMP efforts (current sampling protocols). <br /> <br />Middle Green River <br /> <br />2002 annual fall sampling for YOY Colorado Pikeminnow was conducted from September <br />23 - 26. Although river flows were at record low levels during 2002 fall sampling, <br />backwaters meeting sampling protocol for size and maximum depth were found in all <br />subreaches for a total of 42 backwaters sampled. The weather was warm and dry with mostly <br />sunny conditions throughout the sampling period. Main channel temperatures ranged from <br />140C to 190C, Backwater temperatures ranged from 150C to 240C, Twelve different species <br />were collected from backwaters in this reach of the middle Green River. <br /> <br />There were no YOY Colorado pikeminnow captured during the 2002 field sampling <br />activities. This is the first year that YOY Colorado pikeminno\V were not collected during <br />falllSMP monitoring activities since ISMP began in 1986 (Figure 1). <br /> <br />FY 2002 Annual Report 22c Page - 2 <br />