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~ u, co 1"'i c__, c., Habitat use of Colorado pikeminnow as a percent of time monitored during 1993 and 1994 for all radio-tagged fish combined. (Source: Miller and Ptacek 2000). ................................... 3-7 Figure 3.4a. Mean habitat selection by month, calculated for radio-tagged razorback sucker in the San Juan River, 1994 to 1997. Mean habitat selection values for each calendar month were converted to a 1 OO-percent scale to make them easier to compare between months (Source: Ryden 2000b). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 Figure 3.3. Figure 3.4b. Mean habitat richness values, by month, calculated for radio-tagged razorback sucker in the San Juan River, 1994 to 1997 (Source: Ryden 2000b). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 Figure 3.5. The spatial distribution of seven habitat categories in the San Juan River at high (>7,000 cfs) , medium (3,000 cfs) and low (<700 cfs) flows with expanded scales to allow viewing minor categories (Source: Bliesner and Lamarra 2000). .............................. 3-19 Figure 3.6. A summary of the major habitat categories as a percent of total wetted area (TWA) for high-, medium-, and low-flow periods (Source: Bliesner and Lamarra 2000). .............................. 3-20 Figure 3.7. The comparison between the sum of habitat area (square meters) for Reaches 1 through 6 and mapping flow in the San Juan River for pools (above) and eddies (below) (Source: Bliesner and Lamarra 2000).. 3-22 Figure 3.8. The comparison between the sum of habitat area (square meters) for Reaches 1 through 6 and mapping flow in the San Juan River for slackwaters (Source: Bliesner and Lamarra 2000).. ................. 3-23 Figure 3.9. The relationship between backwater surface area and flow for Reaches 1 and 2 based upon location within the channel (Source: Bliesner and Lamarra 2000). .............................. 3-23 Figure 3.10. The relationship between backwater surface area and flow for Reaches 3 and 4 in the San Juan River (Source: Bliesner and Lamarra 2000). ............................................. 3-24 Figure 3.11. Average habitat richness calculated for overlapping 300-meter river reaches with 150-meter centers by RM for the San Juan River. Habitat richness was determined as the number of habitat types per 300-meter reach. Data were derived from habitat mapping conducted by Bliesner and Lamarra (2000).. .......................,. 3-27 August 2000 T-5 Program Evaluation Report